WO1982000650A1 - Non-dusting and fast-wetting impression material and method of preparing same - Google Patents

Non-dusting and fast-wetting impression material and method of preparing same Download PDF

Info

Publication number
WO1982000650A1
WO1982000650A1 PCT/US1981/001150 US8101150W WO8200650A1 WO 1982000650 A1 WO1982000650 A1 WO 1982000650A1 US 8101150 W US8101150 W US 8101150W WO 8200650 A1 WO8200650 A1 WO 8200650A1
Authority
WO
WIPO (PCT)
Prior art keywords
impression material
water
powdered
dusting
coating agent
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US1981/001150
Other languages
French (fr)
Inventor
Int Inc Dentsply
M Scheuble
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dentsply Sirona Inc
Original Assignee
Dentsply International Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=26877160&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO1982000650(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Dentsply International Inc filed Critical Dentsply International Inc
Priority to DE1981902509 priority Critical patent/DE58203T1/en
Priority to EP81902509A priority patent/EP0058203B2/en
Priority to BR8108758A priority patent/BR8108758A/en
Priority to DE8181902509T priority patent/DE3176705D1/en
Publication of WO1982000650A1 publication Critical patent/WO1982000650A1/en
Anticipated expiration legal-status Critical
Priority to HK66291A priority patent/HK66291A/en
Ceased legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L5/00—Compositions of polysaccharides or of their derivatives not provided for in groups C08L1/00 or C08L3/00
    • C08L5/04—Alginic acid; Derivatives thereof
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K6/00—Preparations for dentistry
    • A61K6/90—Compositions for taking dental impressions

Definitions

  • impression naterials particularly for use in dental applications, which are formed by mixing a powdered material with water, as for example alginate impression materials or alginate substitute materials, i.e., those in which the alginic acid salt ocmxarri is replaced by a substitute polymer, for example, carboxymethyl cellulose, xanthan gum, and the like.
  • Alginate inpression and alginate substitute materials are known and have been used successfully for many years in the dental arts. See, for example, U.S. 2,345,255 to Gross; U.S. 2,390,137 to Vallan- digham; U.S. 2,397,145 to vanBuran Joy; U.S. 2,422,497 to Nbyes; U.S. 2,878,129 to Eabchuck; U.S. 3,246,998 to Eigashi et al.; Reissue 23,700 to Lcckridge; and U.S. 2,733,156 to Cornell; the disclosures of these patents relevant to the preparation of conventional alginate and alginate substitute impression materials being incorporated herein by reference.
  • impression materials generally involves the proper measuring and then mixing of certain powdered constituents or components of the impressi ⁇ n material (referred to hereinafter as the powdered c ⁇ tconents), with water or a substitute liquid, proper measuring of the powdered and liquid components being essential to obtaining satisfactory physical properties.
  • the powdered c ⁇ tconents Prior to mixing the powdersd and liquid components, it is commen practice for the user to shake the containar in which the various powdered components of the impressicn material are stored to fluff them. This fluffing is done to facilitate the measuring or proportioning of the powdered components, using a scoop or ladle which usually is provided with the container.
  • the dusting problem is farther exaggerated because the harder one stirs the powdered components/water mix, the greater is the opportunity for a portion of the powder to become airborne.
  • This dusting which occurs primarily when a portion of the filler in the powdered components separates from the ramaining powdered components and becomes airborne upon mixing or shaking, or upon stirring with, the liquid component of the impression material has become the cause of concern because of its potential health hazard. (Woody, R. D. et al. , JSDA 94, 501, 1977) . Accordingly, it is a principal object of the present invention to reduce the dusting that occurs when the filler in the powdered components separates and becomes airborne upon mixing or shaking.
  • the greater ease and speed with which the powdered components are wet by water during mixing, the eliminarion of airborne particles of powder, and other objects and advantages are achieved when the constituent powdered particles, or at least a portion thereof, are coated with a minor amount of a surfactant/dispersing agent or compound which is readily and rapidly wet, dispersed or dissolved by the water or substitute liquid, c ⁇ mpcnent of ths impression material.
  • This coating of the powdered particles causes the individual particles to be attracted to one another so that they do not easily become airborne, and permits the powder particles to be easily wet by the water or substitute liquid.
  • substances which may be used to coat the powdered particles are, for example, natural polymer dispersing agents such as xanthan gum, sodium polyalginate or potassium polyalginate, cellulose esters or ethers having ester or ether groups containing free hydroxy or carboxyl groups such as hydroxyethyl or hydroxymethyl cellulose, cartoxyl methyl cellulose, synthetic ionic polymeric surfactants such as those which contain, substantial amounts of units derived from alkylene oxides such as polyethylene glycol or polypropylene or polybutylene glycol or copolymers of them, including polymeric surfactants of which the Tween and Brij series produced by ICI Americas are examples, and other including, for example, block copolymers of polysiloxanes and polyethylene glycols.
  • natural polymer dispersing agents such as xanthan gum, sodium polyalginate or potassium polyalginate
  • cellulose esters or ethers having ester or ether groups containing free hydroxy or carboxyl groups such as
  • the coating agent need not necessarily be limited to polymers but may include moncmeric substances, for example, polyols such as ethylene glycol, propylene glycol, alkanolamines such as triethanolamine, and compounds such as lauryl sulfate, sucrose butyrata, glycerol esters, and the like. Mixtures of the above coating agents also may be used.
  • coating agents may be employed, in varying dusting reducing, powder wetting enhancing amounts, usually from about 1-10% by weight based on the total weight of the powdered components, so long as the respective agent that is used adequately coats the powdered components, and is readily and quickly wet, dispersed or dissolved by the liquid component of the impression material to provide a composition wherein dusting is significantly reduced and the powdered ccmpcnents are significantly more rapidly wet upon mixing as compared to the same composition absent the coating agent.
  • the preferred composition of the invention has a Dust Index of less than about 100 using a Gelman Air Analyzer (See Example 4) .
  • the invention will be mere fully understccd in conjunction with the following examples thereof, which examples merely are illustrative and should not be considered to be limitive of the materials and procedures employed in practicing the invention.
  • Example 1
  • Aa alginate impression material was produced from the following ccmponents:
  • the diatamacaous earth filler was wet with the polypropylene glycol coating agent before being admixed with the other powdered components.
  • Example 3 The procedures of Example 1 were repeated, except that potassium alginate was used in place of sodium alginate. A complete wetting of the alginate was noted within 5 seconds and no dusting was observed.
  • Example 3 The procedures of Example 1 were repeated, except that potassium alginate was used in place of sodium alginate. A complete wetting of the alginate was noted within 5 seconds and no dusting was observed.
  • Example 4 The procedure of Example 1 was repeated except that the polypropylene glycol (coating agent) was eliminated from the alginate powder formulation. in contrast with the results of Example 1, it was observed that it took the same alginate formulation, except for the emission of the surface coating agent, 10 seconds to be wet by the water. It was also observed that there was a great deal of "dusting".
  • Example 4 The procedure of Example 1 was repeated except that the polypropylene glycol (coating agent) was eliminated from the alginate powder formulation. in contrast with the results of Example 1, it was observed that it took the same alginate formulation, except for the emission of the surface coating agent, 10 seconds to be wet by the water. It was also observed that there was a great deal of "dusting".
  • Example 4 Example 4
  • These coating agents all are capable of providing useful alginate materials.
  • Example 1 The procedure of Example 1 was repeated, except that the alginate impression material was produced from the following components: A complete wetting of the alginate impression material was noted within 5 seconds and no dusting was observed.

Landscapes

  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Dental Preparations (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

Un materiau d'impression en poudre a mouillage rapide et ne produisant pas de poussiere est prepare en recouvrant au moins une portion des composants de la poudre d'un materiau d'impression conventionnel avec un agent de revetement de surface avant le melange avec de l'eau.A quick wetting, dust-free powder printing material is prepared by coating at least a portion of the powder components of a conventional printing material with a surface coating agent prior to mixing with 'water.

Description

Description
Non-Custing and Fast-Wetting Impression Material and Method of Preoaring Same
BACKGROUND OF THE INVENTION This invention relates to impression naterials, particularly for use in dental applications, which are formed by mixing a powdered material with water, as for example alginate impression materials or alginate substitute materials, i.e., those in which the alginic acid salt ocmxaient is replaced by a substitute polymer, for example, carboxymethyl cellulose, xanthan gum, and the like.
Alginate inpression and alginate substitute materials are known and have been used successfully for many years in the dental arts. See, for example, U.S. 2,345,255 to Gross; U.S. 2,390,137 to Vallan- digham; U.S. 2,397,145 to vanBuran Joy; U.S. 2,422,497 to Nbyes; U.S. 2,878,129 to Eabchuck; U.S. 3,246,998 to Eigashi et al.; Reissue 23,700 to Lcckridge; and U.S. 2,733,156 to Cornell; the disclosures of these patents relevant to the preparation of conventional alginate and alginate substitute impression materials being incorporated herein by reference. The use of such impression materials generally involves the proper measuring and then mixing of certain powdered constituents or components of the impressiαn material (referred to hereinafter as the powdered cαtconents), with water or a substitute liquid, proper measuring of the powdered and liquid components being essential to obtaining satisfactory physical properties. Prior to mixing the powdersd and liquid components, it is commen practice for the user to shake the containar in which the various powdered components of the impressicn material are stored to fluff them. This fluffing is done to facilitate the measuring or proportioning of the powdered components, using a scoop or ladle which usually is provided with the container. under such circumstances, however, when the top of the container is opened, some of the fluffed powder tends toward dusting, i.e., becoming airborne and floating out of the container. Dusting also tends to occur when the powdered comporents are mixed with water or a water substitute due, at least in part, to the difficulty with which the powdered components are wet by the water. In practice, the powdered components are placed in a flexible mixing bowl and water is added to it. The powdered components do not wet immediately and the bulk of the powder floats for a period of time on the surface of the water during mixing, thus permitting sane dusting to occur.
The dusting problem is farther exaggerated because the harder one stirs the powdered components/water mix, the greater is the opportunity for a portion of the powder to become airborne.
This dusting, which occurs primarily when a portion of the filler in the powdered components separates from the ramaining powdered components and becomes airborne upon mixing or shaking, or upon stirring with, the liquid component of the impression material has become the cause of concern because of its potential health hazard. (Woody, R. D. et al. , JSDA 94, 501, 1977) . Accordingly, it is a principal object of the present invention to reduce the dusting that occurs when the filler in the powdered components separates and becomes airborne upon mixing or shaking.
It is another object of the present invention to achieve easier wetting of the powdered components by water or a substitute liquid. DESCRIPTION OF THE INVENTION
In accordance with the present invention, the greater ease and speed with which the powdered components are wet by water during mixing, the eliminarion of airborne particles of powder, and other objects and advantages are achieved when the constituent powdered particles, or at least a portion thereof, are coated with a minor amount of a surfactant/dispersing agent or compound which is readily and rapidly wet, dispersed or dissolved by the water or substitute liquid, cαmpcnent of ths impression material. This coating of the powdered particles causes the individual particles to be attracted to one another so that they do not easily become airborne, and permits the powder particles to be easily wet by the water or substitute liquid. Examples of substances which may be used to coat the powdered particles, are, for example, natural polymer dispersing agents such as xanthan gum, sodium polyalginate or potassium polyalginate, cellulose esters or ethers having ester or ether groups containing free hydroxy or carboxyl groups such as hydroxyethyl or hydroxymethyl cellulose, cartoxyl methyl cellulose, synthetic ionic polymeric surfactants such as those which contain, substantial amounts of units derived from alkylene oxides such as polyethylene glycol or polypropylene or polybutylene glycol or copolymers of them, including polymeric surfactants of which the Tween and Brij series produced by ICI Americas are examples, and other including, for example, block copolymers of polysiloxanes and polyethylene glycols. The coating agent need not necessarily be limited to polymers but may include moncmeric substances, for example, polyols such as ethylene glycol, propylene glycol, alkanolamines such as triethanolamine, and compounds such as lauryl sulfate, sucrose butyrata, glycerol esters, and the like. Mixtures of the above coating agents also may be used. It should be evident, then, that a wide variety of coating agents may be employed, in varying dusting reducing, powder wetting enhancing amounts, usually from about 1-10% by weight based on the total weight of the powdered components, so long as the respective agent that is used adequately coats the powdered components, and is readily and quickly wet, dispersed or dissolved by the liquid component of the impression material to provide a composition wherein dusting is significantly reduced and the powdered ccmpcnents are significantly more rapidly wet upon mixing as compared to the same composition absent the coating agent.
The preferred composition of the invention has a Dust Index of less than about 100 using a Gelman Air Analyzer (See Example 4) . The invention will be mere fully understccd in conjunction with the following examples thereof, which examples merely are illustrative and should not be considered to be limitive of the materials and procedures employed in practicing the invention. Example 1
Aa alginate impression material was produced from the following ccmponents:
Figure imgf000006_0001
The diatamacaous earth filler was wet with the polypropylene glycol coating agent before being admixed with the other powdered components.
The entire mixture was blended in a ribbon blender. A 14 gram sample of the resulting mixture was placed in a mixing bowl mounted on an "Alginator" produced by Cadco Products. An appropriate quantity of water was then added to the bowl and the "Alginator" was caused to turn. A spatula was held in a fixed position in the turning mixture and it was observed that after 5 seconds the alginate powder was wet. It was also observed that there were no dust particles released upon stirring.
Example 2
The procedures of Example 1 were repeated, except that potassium alginate was used in place of sodium alginate. A complete wetting of the alginate was noted within 5 seconds and no dusting was observed. Example 3
The procedure of Example 1 was repeated except that the polypropylene glycol (coating agent) was eliminated from the alginate powder formulation. in contrast with the results of Example 1, it was observed that it took the same alginate formulation, except for the emission of the surface coating agent, 10 seconds to be wet by the water. It was also observed that there was a great deal of "dusting". Example 4
In order to quantify the observation of dusting a standard container of alginate impression material powder was fluffed by turning and rotating the container for 20 seconds. Immediataly the top was removed and the relative concentration of particles released from the surface were quantified using a Geliran Air Analyser, a unit which is designed to measure particulate contaminates in industry. The air immediately above the container of the alginate formulation prepared in accordance with Example 1, i.e. having a coating agent present on the filler particles, was sampled and a particle content (Dust Index) of 6.5 micro grams per liter of air per minute was observed. This was much less than a particle content (Dust Index) of 215 micro grams per liter of air per minute measured for the same alginate impression material powder handled in the same manner, but not surface treated. Both the surface treated powder and that not treated, complied fully with the requirsnant of ADA Specification 18 for Alginate Imprassion Material.
Using the same procedure, additional dust-free alginate compositions were made using different coating agents. Successful coating agents, their "Dust Index", and chemical name are listed in the following Table:
Figure imgf000007_0001
These coating agents all are capable of providing useful alginate materials.
Example 5
The procedure of Example 1 was repeated, except that the alginate impression material was produced from the following components:
Figure imgf000008_0001
A complete wetting of the alginate impression material was noted within 5 seconds and no dusting was observed. Although the present invention has been described in connection with preferred embodiments thereof, it is to be understood that modifications and variations may be resorted to, without departing from the spirit and scope thereof, as those skilled in the art will readily understand. Such modifications and variations are considered to be within the purview and scope of the appended claims.

Claims

WHAT IS CLAIMED IS:
1. A dry powdered impression material composition adapted upon mixing with water to form an impression paste capable of setting to a solid, comprising an alginic acid salt component and a filler com ponent, wherein said powdered composition or at least a portion thereof is coated with a coating agent which is readily and rapidly wet, dispersed or dissolved by the water with which the impression composition is to be mixed to form the settable paste having reduced dusting characteristics as compared to the same composition absent the coating agent.
2. The impression material of claim 1, wherein said coating agent is selected from the group consisting of natural polymer dispersing agents, cellulose ester and ethers having ester or ether groups containing free hydroxyl or carboxyl groups and synthetic nonionic polymeric surfactants.
3. The impression material of claim 1, wherein said coating agent is selected from the group consisting of xanthan gum, hydroxyethyl or hydroxymethyl cellulose, carboxy methyl cellulose, sodium polyalginate or potassium polyalginate, polyethylene glycol or polypropylene glycol or polybutylene glycol or copolymers thereof, ethylene glycol, propylene glycol, triethanolamine lauryl sulfate, sucrose butyrate, glycerol esters and mixtures thereof..
4. The impression material of claim 1 consisting essentially of the following components in admixture: C
Figure imgf000009_0001
wherein said diatαnaceous earth had been coated with said polypropylene glycol prior to having been mixed with the remaining components.
5. A method for increasing the speed with which a powdered impression material becomes wet with water upon acmixture therewith and for reducing the tendency of the impression material toward dusting, comprising coating the powder or a part of it with an agent which is readily and rapidly wet, dispersed or dissolved upon mixing with water to form a paste.
PCT/US1981/001150 1980-08-26 1981-08-26 Non-dusting and fast-wetting impression material and method of preparing same Ceased WO1982000650A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE1981902509 DE58203T1 (en) 1980-08-26 1981-08-26 NON-DUSTING AND QUICKLY CROSSLINKING PRINT MATERIAL AND METHOD FOR THE PRODUCTION THEREOF.
EP81902509A EP0058203B2 (en) 1980-08-26 1981-08-26 Non-dusting and fast-wetting impression material and method of preparing same
BR8108758A BR8108758A (en) 1980-08-26 1981-08-26 PRINTING WITHOUT BREAKING POINTS AND FAST WETTING MATERIAL AND METHOD OF PREPARING IT
DE8181902509T DE3176705D1 (en) 1980-08-26 1981-08-26 Non-dusting and fast-wetting impression material and method of preparing same
HK66291A HK66291A (en) 1980-08-26 1991-08-22 Non-dusting and fast-wetting impression material and method of preparing same

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US18141780A 1980-08-26 1980-08-26
US06/293,143 US4394172A (en) 1980-08-26 1981-08-17 Non-dusting and fast-wetting impression material and method of preparing same
US293143810817 1981-08-17
US181417 1988-04-14

Publications (1)

Publication Number Publication Date
WO1982000650A1 true WO1982000650A1 (en) 1982-03-04

Family

ID=26877160

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1981/001150 Ceased WO1982000650A1 (en) 1980-08-26 1981-08-26 Non-dusting and fast-wetting impression material and method of preparing same

Country Status (5)

Country Link
US (1) US4394172A (en)
EP (1) EP0058203B2 (en)
JP (2) JPH0254325B2 (en)
DE (1) DE3176705D1 (en)
WO (1) WO1982000650A1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2553999A1 (en) * 1983-11-02 1985-05-03 G C Dental Ind Corp PULVERULENT FOAM MATERIAL WITH LOW DUST CLEARANCE FOR DENTAL USE, BASED ON ALGINATE
EP0170020A3 (en) * 1984-06-30 1987-08-19 Bayer Ag Impression material and process for preparing it
EP0331584A1 (en) * 1988-03-03 1989-09-06 Sanofi Alginate-based power composition for dental impressions
DE3938840A1 (en) * 1988-11-25 1990-05-31 G C Dental Ind Corp LOW-DUSTING POWDER-FUSED ALGINATE PRINTING MATERIAL FOR DENTAL PURPOSES
WO2014077892A1 (en) * 2012-11-19 2014-05-22 Benetech, Inc. Dust suppression formulas using plasticized cellulose ethers
US9017767B2 (en) 2012-06-13 2015-04-28 Benetech, Inc. Method of suppressing dust in piles and railcars using plasticized cellulose ethers
RU2827935C1 (en) * 2023-08-14 2024-10-04 Марк Анатольевич Брызгалов Dental impression material

Families Citing this family (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4394172A (en) * 1980-08-26 1983-07-19 Dentsply Research & Development Corp. Non-dusting and fast-wetting impression material and method of preparing same
DE3207126C1 (en) * 1982-02-27 1983-06-09 Blendax-Werke R. Schneider Gmbh & Co, 6500 Mainz Dental impression material
US4608088A (en) * 1984-03-22 1986-08-26 Dento-Med Industries Incorporated Denture adherent powder
JPS61115557A (en) * 1984-11-12 1986-06-03 三金工業株式会社 Fabrication of tooth shape taking and tooth forming material
DE3535132A1 (en) * 1985-10-02 1987-04-02 Bayer Ag DUST-FREE ALGINATE IMPRESSIONS
JPS62212255A (en) * 1986-03-12 1987-09-18 而至歯科工業株式会社 Low-dust powdery dental gypsum composition
JPS62212254A (en) * 1986-03-12 1987-09-18 而至歯科工業株式会社 Low-dust powdery dental filling composition
US4772324A (en) * 1986-05-20 1988-09-20 Van R Dental Products, Inc. Hydrocollid gel based dental impression composition
EP0267274A4 (en) * 1986-05-20 1989-05-11 R Dental Products Inc Van Dental impression composition and method of making.
CA1302659C (en) * 1986-10-24 1992-06-09 Hans-Peter K. Gribi Dental impression material
US5230959A (en) 1989-03-20 1993-07-27 Weyerhaeuser Company Coated fiber product with adhered super absorbent particles
JP3065381B2 (en) * 1991-05-23 2000-07-17 三金工業株式会社 Dental alginate impression material
DE4131839A1 (en) * 1991-09-25 1993-04-01 Bayer Ag ALGINATE IMPRESSION
US5352480A (en) * 1992-08-17 1994-10-04 Weyerhaeuser Company Method for binding particles to fibers using reactivatable binders
US5547541A (en) * 1992-08-17 1996-08-20 Weyerhaeuser Company Method for densifying fibers using a densifying agent
US5543215A (en) * 1992-08-17 1996-08-06 Weyerhaeuser Company Polymeric binders for binding particles to fibers
US5589256A (en) * 1992-08-17 1996-12-31 Weyerhaeuser Company Particle binders that enhance fiber densification
US5308896A (en) * 1992-08-17 1994-05-03 Weyerhaeuser Company Particle binders for high bulk fibers
US5807364A (en) * 1992-08-17 1998-09-15 Weyerhaeuser Company Binder treated fibrous webs and products
US5300192A (en) * 1992-08-17 1994-04-05 Weyerhaeuser Company Wet laid fiber sheet manufacturing with reactivatable binders for binding particles to fibers
US5998032A (en) 1992-08-17 1999-12-07 Weyerhaeuser Company Method and compositions for enhancing blood absorbence by superabsorbent materials
US5538783A (en) * 1992-08-17 1996-07-23 Hansen; Michael R. Non-polymeric organic binders for binding particles to fibers
US6340411B1 (en) 1992-08-17 2002-01-22 Weyerhaeuser Company Fibrous product containing densifying agent
KR950702909A (en) * 1992-08-17 1995-08-23 패트릭 디. 쿠갠 Particle binder
US5641561A (en) * 1992-08-17 1997-06-24 Weyerhaeuser Company Particle binding to fibers
US6391453B1 (en) * 1992-08-17 2002-05-21 Weyernaeuser Company Binder treated particles
US7144474B1 (en) 1992-08-17 2006-12-05 Weyerhaeuser Co. Method of binding particles to binder treated fibers
US6127471A (en) * 1995-06-07 2000-10-03 Carchalk, Inc. Coating system composition
JP3519533B2 (en) 1996-01-24 2004-04-19 株式会社ジーシー Low dusting dental alginate impression material composition
US6146655A (en) * 1997-08-29 2000-11-14 Softy-Flex Inc. Flexible intra-oral bandage and drug delivery system
US6435262B1 (en) 2001-03-16 2002-08-20 New Ideas, Llc Foundry sand
US20040058605A1 (en) * 2002-09-19 2004-03-25 Hansen Michael R. Polysaccharide treated cellulose fibers
US20050000669A1 (en) * 2003-03-14 2005-01-06 Hugh West Saccharide treated cellulose pulp sheets
US20050133180A1 (en) * 2003-12-19 2005-06-23 Hugh West Densification agent and oil treated cellulose fibers
US20050178518A1 (en) * 2004-02-13 2005-08-18 Hugh West Sodium sulfate treated pulp
JP4901761B2 (en) * 2005-02-16 2012-03-21 デンツプライ インターナショナル インコーポレーテッド Thermoformed plastic type II
WO2007064839A2 (en) * 2005-12-01 2007-06-07 Bassett, Inc. Apparatus and method for preparing foundry sand mixes
US20080111106A1 (en) * 2006-05-22 2008-05-15 Renn Donald W Non-silica containing impression and casting materials
US20070267598A1 (en) * 2006-05-22 2007-11-22 Artmolds, Inc. Non-silica containing impression and casting materials
CN109467616A (en) * 2018-12-27 2019-03-15 青岛海之林生物科技开发有限公司 A kind of preparation process of dustless sodium alginate used for cosmetic

Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2390137A (en) * 1942-05-14 1945-12-04 Coe Lab Inc Impression material
US2397145A (en) * 1943-12-11 1946-03-26 Joy Homer Van Beuren Impression material
US2422497A (en) * 1945-12-22 1947-06-17 Stanley E Noyes Dental impression composition
US2628153A (en) * 1952-04-07 1953-02-10 Dental Perfection Company Fluoride-containing impression materials
US2631082A (en) * 1952-03-28 1953-03-10 Dental Perfection Company Lead sulfate impression materials
US2631081A (en) * 1952-03-28 1953-03-10 Dental Perfection Company Lead carbonate impression materials
USRE23700E (en) * 1953-08-18 Dental impression composition
US2678280A (en) * 1952-03-21 1954-05-11 Dental Perfection Company Gel point indicating impression materials
US2816040A (en) * 1953-12-07 1957-12-10 Kerr Mfg Company Dental impression material
US2844486A (en) * 1956-12-26 1958-07-22 Sierra Talc & Clay Company Water dispersible talc pigment composition
US3246998A (en) * 1962-11-02 1966-04-19 Higashi Setsuo Impression material
US3291618A (en) * 1965-09-23 1966-12-13 Jacque C Morrell Dental impression materials
US3966488A (en) * 1973-02-01 1976-06-29 Basf Aktiengesellschaft Flowable aqueous pigment formulations containing dipropylene glycol
USRE29295E (en) * 1973-11-20 1977-07-05
US4136050A (en) * 1977-02-16 1979-01-23 Betz Laboratories, Inc. Dust suppression method and composition

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2733156A (en) * 1956-01-31 Dental impression material and method
CA530730A (en) 1956-09-25 B. Booth Robert Method of preventing the dissemination of mineral fines into the atmosphere
US2345255A (en) * 1940-06-19 1944-03-28 White S Dental Mfg Co Dental impression compound
US2623808A (en) * 1951-06-02 1952-12-30 Surgident Ltd Dental impression compositions
US2878129A (en) * 1953-12-07 1959-03-17 Kerr Mfg Company Dental impression material
GB1073772A (en) * 1963-02-13 1967-06-28 Amalgamated Dental Co Ltd Improvements in and relating to dental impression materials
US3620778A (en) * 1969-09-17 1971-11-16 Jacque C Morrell Method of making dental impression and dental stones having smooth surfaces
JPS5424964A (en) * 1977-07-26 1979-02-24 Kimitsu Kagaku Kenkyusho Preparation of stamping material
DE3018029A1 (en) * 1980-05-10 1981-11-12 Bayer Ag, 5090 Leverkusen METHOD FOR THE PRODUCTION OF DUST-FREE PREPARATIONS
US4394172A (en) * 1980-08-26 1983-07-19 Dentsply Research & Development Corp. Non-dusting and fast-wetting impression material and method of preparing same

Patent Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE23700E (en) * 1953-08-18 Dental impression composition
US2390137A (en) * 1942-05-14 1945-12-04 Coe Lab Inc Impression material
US2397145A (en) * 1943-12-11 1946-03-26 Joy Homer Van Beuren Impression material
US2422497A (en) * 1945-12-22 1947-06-17 Stanley E Noyes Dental impression composition
US2678280A (en) * 1952-03-21 1954-05-11 Dental Perfection Company Gel point indicating impression materials
US2631082A (en) * 1952-03-28 1953-03-10 Dental Perfection Company Lead sulfate impression materials
US2631081A (en) * 1952-03-28 1953-03-10 Dental Perfection Company Lead carbonate impression materials
GB727520A (en) * 1952-04-07 1955-04-06 Dental Perfection Company Improvements in or relating to a dental impression composition
US2628153A (en) * 1952-04-07 1953-02-10 Dental Perfection Company Fluoride-containing impression materials
US2816040A (en) * 1953-12-07 1957-12-10 Kerr Mfg Company Dental impression material
US2844486A (en) * 1956-12-26 1958-07-22 Sierra Talc & Clay Company Water dispersible talc pigment composition
US3246998A (en) * 1962-11-02 1966-04-19 Higashi Setsuo Impression material
US3291618A (en) * 1965-09-23 1966-12-13 Jacque C Morrell Dental impression materials
US3966488A (en) * 1973-02-01 1976-06-29 Basf Aktiengesellschaft Flowable aqueous pigment formulations containing dipropylene glycol
USRE29295E (en) * 1973-11-20 1977-07-05
US4136050A (en) * 1977-02-16 1979-01-23 Betz Laboratories, Inc. Dust suppression method and composition

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
JADA, Vol. 94, March 1977, "Characterization of Airborne Particles from Irreversible Hydrocolloids", WOODY et al. *
See also references of EP0058203A4 *

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2553999A1 (en) * 1983-11-02 1985-05-03 G C Dental Ind Corp PULVERULENT FOAM MATERIAL WITH LOW DUST CLEARANCE FOR DENTAL USE, BASED ON ALGINATE
EP0170020A3 (en) * 1984-06-30 1987-08-19 Bayer Ag Impression material and process for preparing it
EP0331584A1 (en) * 1988-03-03 1989-09-06 Sanofi Alginate-based power composition for dental impressions
FR2627984A1 (en) * 1988-03-03 1989-09-08 Sanofi Sa PULVERULENT COMPOSITION BASED ON ALGINATE FOR DENTAL IMPRESSIONS
US4979989A (en) * 1988-03-03 1990-12-25 Societe Anonyme Sanofi Alginate-type powdered composition for dental impressions
DE3938840A1 (en) * 1988-11-25 1990-05-31 G C Dental Ind Corp LOW-DUSTING POWDER-FUSED ALGINATE PRINTING MATERIAL FOR DENTAL PURPOSES
US9017767B2 (en) 2012-06-13 2015-04-28 Benetech, Inc. Method of suppressing dust in piles and railcars using plasticized cellulose ethers
WO2014077892A1 (en) * 2012-11-19 2014-05-22 Benetech, Inc. Dust suppression formulas using plasticized cellulose ethers
US9267063B2 (en) 2012-11-19 2016-02-23 Benetech, Inc. Dust suppression formulas using plasticized cellulose ethers
US9937523B2 (en) 2012-11-19 2018-04-10 Benetech, Inc. Dust suppression formulas using plasticized cellulose ethers
RU2827935C1 (en) * 2023-08-14 2024-10-04 Марк Анатольевич Брызгалов Dental impression material

Also Published As

Publication number Publication date
EP0058203B1 (en) 1988-04-13
AU7585681A (en) 1981-03-17
EP0058203A1 (en) 1982-08-25
JPH06316508A (en) 1994-11-15
JPH0254325B2 (en) 1990-11-21
AU548207B2 (en) 1985-11-28
EP0058203A4 (en) 1984-04-04
DE3176705D1 (en) 1988-05-19
US4394172A (en) 1983-07-19
EP0058203B2 (en) 1994-08-10
JPS57501426A (en) 1982-08-12

Similar Documents

Publication Publication Date Title
EP0058203B1 (en) Non-dusting and fast-wetting impression material and method of preparing same
Sugawara et al. In vitro evaluation of the sealing ability of a calcium phosphate cement when used as a root canal sealer-filler
JP4335320B2 (en) Artificial human fluid
US4543372A (en) Low dusting powdery alginate impression material for dental use
US4979989A (en) Alginate-type powdered composition for dental impressions
US5447654A (en) Bleaching composition in granulated form which may be used for bleaching hair and process for the preparation of the said composition
SE500202C2 (en) Powdered dental imaging material consisting of low dusting alginate
DE69726031T2 (en) Tooth impression compound containing low-dust alginate
CA1255456A (en) Molding material and process for its preparation
US2992188A (en) Water dispersible gum product and method
JPS6132050B2 (en)
CA1161207A (en) Non-dusting and fast-wetting impression material and method of preparing same
Vougiouklakis et al. Evaluation of the bonding of cervical restorative materials
HK66291A (en) Non-dusting and fast-wetting impression material and method of preparing same
US6274125B1 (en) Granulated composition based on peroxidized derivatives for bleaching hair and process for the preparation of the said compositions
Srivastava et al. Alginates: A Review of Compositional Aspects for Dental Applications.
JPS6121492B2 (en)
JPS59225104A (en) Low-dusting powdery alginate impression material for dental use
EP0333608A2 (en) Anti-foam composition, process for making it and agricultural chemicals containing it
CA2339169A1 (en) Method of reducing fines in a powdered product and fabric cleaner produced therefrom
US6866840B2 (en) Tooth-cleaning composition and method for producing it
JPS58173199A (en) Manufacture of pasty cleanser
JP2001513811A (en) Solid formulation
SU549235A1 (en) Suspension for the manufacture of foundry ceramic molds for melted models
JPH06100801A (en) Water color

Legal Events

Date Code Title Description
AK Designated states

Designated state(s): AU BR JP

AL Designated countries for regional patents

Designated state(s): CH DE FR GB SE

WWE Wipo information: entry into national phase

Ref document number: 1981902509

Country of ref document: EP

WWP Wipo information: published in national office

Ref document number: 1981902509

Country of ref document: EP

WWG Wipo information: grant in national office

Ref document number: 1981902509

Country of ref document: EP