ES400762A1 - PROCEDURE FOR OBTAINING FLEXIBLE FOAMS OF PO-LIURETHANES OF HYDROPHILIC CHARACTER. - Google Patents

PROCEDURE FOR OBTAINING FLEXIBLE FOAMS OF PO-LIURETHANES OF HYDROPHILIC CHARACTER.

Info

Publication number
ES400762A1
ES400762A1 ES400762A ES400762A ES400762A1 ES 400762 A1 ES400762 A1 ES 400762A1 ES 400762 A ES400762 A ES 400762A ES 400762 A ES400762 A ES 400762A ES 400762 A1 ES400762 A1 ES 400762A1
Authority
ES
Spain
Prior art keywords
ratio
hydroxyl groups
approximately
polyol
polyether
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.)
Expired
Application number
ES400762A
Other languages
Spanish (es)
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.)
Pechiney SA
Original Assignee
Pechiney Ugine Kuhlmann SA
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
Application filed by Pechiney Ugine Kuhlmann SA filed Critical Pechiney Ugine Kuhlmann SA
Publication of ES400762A1 publication Critical patent/ES400762A1/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/48—Polyethers
    • C08G18/4833—Polyethers containing oxyethylene units
    • C08G18/4837—Polyethers containing oxyethylene units and other oxyalkylene units
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/48—Polyethers
    • C08G18/4804—Two or more polyethers of different physical or chemical nature
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G2110/00—Foam properties
    • C08G2110/0008—Foam properties flexible
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G2110/00—Foam properties
    • C08G2110/0041—Foam properties having specified density
    • C08G2110/005—< 50kg/m3
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G2110/00—Foam properties
    • C08G2110/0083—Foam properties prepared using water as the sole blowing agent

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Polyurethanes Or Polyureas (AREA)

Abstract

Process for obtaining flexible hydrophilic polyurethane foams, by reacting a polyisocyanate with at least one hydroxy compound in the presence of a catalyst and a swelling agent, as well as usual additives in the compositions for polyurethane foams, characterized Said process due to the fact that, as a hydroxy compound, a polyether-polyol is used, which contains from 50 to 70% of ethylene oxide groups, expressed by weight in relation to the polyether-polyol and which has the following characteristics: a) the equivalent average molecular weight is between 800 and 2000 for each hydroxyl group; b) the number x of primary hydroxyl groups, relative to the total number of hydroxyl groups, is between 35 and 55%; c) the ratio y of the content of ethylene oxide to the content of primary hydroxyl groups is between 1.1 and 1.7, with the additional condition that for the values of x between approximately 45 and 55%, the ratio y it is less than approximately 1.3, while the values of the ratio y greater than 1.3 imply corresponding values of x comprised between approximately 35 and 45%; d) the cloud point determined according to method AFNOR T 73 403, method B, is less than 30; and because polyisocyanate and polyether polyol are used in amounts such that the NCO/OH ratio of the number of isocyanate groups to the number of hydroxyl groups is at least equal to 1. (Machine-translation by Google Translate, not legally binding)
ES400762A 1971-03-15 1972-03-14 PROCEDURE FOR OBTAINING FLEXIBLE FOAMS OF PO-LIURETHANES OF HYDROPHILIC CHARACTER. Expired ES400762A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR717108967A FR2129823B1 (en) 1971-03-15 1971-03-15

Publications (1)

Publication Number Publication Date
ES400762A1 true ES400762A1 (en) 1975-01-16

Family

ID=9073540

Family Applications (1)

Application Number Title Priority Date Filing Date
ES400762A Expired ES400762A1 (en) 1971-03-15 1972-03-14 PROCEDURE FOR OBTAINING FLEXIBLE FOAMS OF PO-LIURETHANES OF HYDROPHILIC CHARACTER.

Country Status (12)

Country Link
BE (1) BE780287A (en)
DE (1) DE2211914C2 (en)
DK (1) DK141552B (en)
ES (1) ES400762A1 (en)
FR (1) FR2129823B1 (en)
GB (1) GB1381925A (en)
IL (1) IL38966A0 (en)
IT (1) IT957566B (en)
NL (1) NL154760B (en)
NO (1) NO134841C (en)
SE (1) SE402783B (en)
TR (1) TR16954A (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4143004A (en) 1974-10-02 1979-03-06 Berol Kemi Ab Process for the preparation of polyurethane foam
JPS583488B2 (en) * 1978-05-15 1983-01-21 株式会社ブリヂストン Method for manufacturing soft polyether polyurethane foam
DE2916485A1 (en) * 1979-04-24 1980-11-06 Bayer Ag METHOD FOR PRODUCING ELASTIC MOLDED BODIES
DE3066568D1 (en) * 1979-07-11 1984-03-22 Ici Plc Prepolymers, polyisocyanate compositions prepared therefrom and their use in the preparation of polyurethane foams
EP0044481B2 (en) * 1980-07-21 1987-03-11 Mobay Chemical Corporation Process for the production of elastomeric moulded products
DE3942330A1 (en) * 1989-12-21 1991-06-27 Basf Ag METHOD FOR THE PRODUCTION OF FLEXIBLE POLYURETHANE SOFT FOAMS WITH VISCOELASTIC, BODY SOUND ABSORBING PROPERTIES AND POLYOXYALKYLENE-POLYOL BLENDS TO BE USED THEREFOR
DE4202992A1 (en) * 1992-02-03 1993-08-05 Bayer Ag METHOD FOR PRODUCING ELASTIC, OPEN-CELLED PUR SOFT FOAMS
DE4203918A1 (en) * 1992-02-11 1993-08-12 Basf Ag METHOD FOR THE PRODUCTION OF FLUOROCHLORINE-HYDROGEN-FREE POLYURETHANE SOFT FOAMS USING POLYISOCYANATE MIXTURES ON DIPHENYLMETHANE DIISOCYANIZATE POLYISOCYANIZED ASYANIZED ASYANIZED ASYANIZED ASYANATE BASE
CZ351996A3 (en) * 1995-12-07 1997-06-11 Shell Int Research Polyol formulation for preparing flexible polyurethane foam similar to latex
US6063309A (en) * 1998-07-13 2000-05-16 Arco Chemical Technology L.P. Dispersion polyols for hypersoft polyurethane foam
CN1175020C (en) * 1999-11-02 2004-11-10 亨茨曼国际有限公司 Process for making viscoelastic foams, mixing polyols, and reaction systems useful therefor
JP5941468B2 (en) 2010-09-07 2016-06-29 ダウ グローバル テクノロジーズ エルエルシー Method for producing low compression strain and high air flow rate MDI viscoelastic polyurethane foam
EP2621985B1 (en) 2010-09-29 2019-07-24 Dow Global Technologies LLC Process for making high airflow and low compression set viscoelastic polyurethane foam

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3441523A (en) * 1964-11-12 1969-04-29 Allied Chem Filled cellular urethanes
US3457203A (en) * 1966-04-25 1969-07-22 Olin Mathieson Hydrophilic polyurethane foams and a process for preparing them
FR1599727A (en) * 1968-08-13 1970-07-20

Also Published As

Publication number Publication date
GB1381925A (en) 1975-01-29
DK141552C (en) 1980-10-06
DE2211914C2 (en) 1983-11-10
IT957566B (en) 1973-10-20
IL38966A0 (en) 1972-05-30
FR2129823A1 (en) 1972-11-03
NL154760B (en) 1977-10-17
NO134841B (en) 1976-09-13
DK141552B (en) 1980-04-21
SE402783B (en) 1978-07-17
NO134841C (en) 1976-12-21
BE780287A (en) 1972-09-06
TR16954A (en) 1974-01-17
DE2211914A1 (en) 1972-10-12
NL7203360A (en) 1972-09-19
FR2129823B1 (en) 1974-03-01

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