WO2003044113A1 - A polishing article containing polytetrafluoroethylene - Google Patents

A polishing article containing polytetrafluoroethylene Download PDF

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Publication number
WO2003044113A1
WO2003044113A1 PCT/US2002/036918 US0236918W WO03044113A1 WO 2003044113 A1 WO2003044113 A1 WO 2003044113A1 US 0236918 W US0236918 W US 0236918W WO 03044113 A1 WO03044113 A1 WO 03044113A1
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WO
WIPO (PCT)
Prior art keywords
article
solution
polishing
silicone
molecular weight
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/US2002/036918
Other languages
French (fr)
Inventor
Georges Reding
Richard Sinigalia
Sylvain D'incau
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.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
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 EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Priority to AU2002352761A priority Critical patent/AU2002352761A1/en
Publication of WO2003044113A1 publication Critical patent/WO2003044113A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09G—POLISHING COMPOSITIONS; SKI WAXES
    • C09G1/00—Polishing compositions
    • C09G1/06—Other polishing compositions
    • C09G1/14—Other polishing compositions based on non-waxy substances
    • C09G1/16—Other polishing compositions based on non-waxy substances on natural or synthetic resins
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09G—POLISHING COMPOSITIONS; SKI WAXES
    • C09G1/00—Polishing compositions
    • C09G1/04—Aqueous dispersions
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/244—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of halogenated hydrocarbons
    • D06M15/256—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of halogenated hydrocarbons containing fluorine
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/53—Polyethers
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/643—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain

Definitions

  • This invention relates to articles containing a polishing composition 0 for polishing hard painted surfaces and particularly directed to polishing automotive finishes.
  • U.S. Pat. No 3,965,518 discloses a disposable impregnated wiper 5 for treatment of household furnishings.
  • the wiper is a cellulosic substrate having a bonding material impregnated in a fine pattern on the surface.
  • the polish is an oil and water emulsion having an internal phase of mineral oil and silicone fluid that serves as a furniture polish.
  • U.S. Pat. No. 4,683,001 discloses a cloth that is coated or o impregnated in a discontinuous manner with a polish composition.
  • the polish composition comprises a silicone oil, a detergent and soap or wax.
  • the cloth comprises a polypropylene meltblown material that has been treated with a surfactant, and the wax is a combination of saponified and non-saponified waxes.
  • 5 EP Publication 1035200 (Soft 99 Corp, Japan) discloses a polishing cloth wherein a fluorine compound can be used as a water-repellent component.
  • the reference also discloses generally that the fluorine compound can be tetrafluoroethylene, but does not provide any details or any examples directed to its use.
  • the reference discloses that the fabric portion of the cloth is made with a particular ratio of lipophilic to hydrophilic fibers.
  • U.S. Pat. No. 6475934 is related to EP Publication 1035200 and claims a polishing cloth, wherein trimethyl siloxy silicate is used as a water-repellent component.
  • U.S. Pat. No. 6309984 is assigned to the same entity and claims trimethyl siloxy silicate for use in a water repellency supply cloth directed to use in polishing automobile bodies.
  • the present invention is directed to an article for polishing surfaces made by impregnating a fabric substrate with a polishing liquid that contains a certain percentage of a polytetrafluoroethylene in the form of a dry film dispersed in water.
  • the article provides durability, protection and a high-level shine particularly to painted hard surfaces, such as those on vehicles, boats or the like.
  • the article performs well and is easy to use.
  • the article provides a high gloss after polishing that is significantly higher than that achieved with conventional polishes. This is because the inventive article does not leave a milky haze over the paint film, which may occur with standard polishes.
  • the inventive article provides a longer lasting protective coating than conventional polishes.
  • the article comprises a nonwoven fabric substrate made by hydroentangling, meltblowing, spunbonding or other suitable methods to which a polishing liquid is added.
  • the fabric substrate can be woven or knit, but a nonwoven would be preferable, especially from a cost standpoint.
  • a preferred fabric for the substrate would be Sontara® 9421 , a hydroentangled nonwoven fabric of 70% rayon/30% polyester at a basis weight of 75 grams per square meter, available from E.I. du Pont de Nemours and Company, Wilmington, DE (DuPont).
  • the Sontara® 9421 is preferably used at a thickness of 0.5 mm and can be either apertured or non-apertured.
  • One embodiment of the polishing liquid comprises about 3.5 - 4.0 weight percent (wgt %) Krytox® DF/W, about 2 - 4 wgt % of a silicone compound, a wax and various additives, such as, abrasives, perfumes, biocides, thickeners, emulsifiers and the like. The remainder and greatest portion is water.
  • the silicone is preferably in the form of polydimethylsiloxane.
  • the Krytox® DF/W is a 20% aqueous dispersion of polytetrafluoroethylene and is available from DuPont.
  • Krytox® DF/W is a polytetrafluoroethylene, as is Teflon®, also available from DuPont.
  • Krytox® DF/W has a much lower molecular weight than does Teflon® (about 3300 vs. greater than one million, respectively) and a 5 much different morphology (flat platelets vs. spherical shape, respectively).
  • the particle size of the platelets is about 5-7 micrometers and these small particles are believed to fit in the pores of the painted surfaces and as such provide a longer lasting protective coating compared to other conventional polishing systems.
  • the polishing liquid also comprises about
  • Krytox® DF/W 3.5 - 4.0 percent by weight of Krytox® DF/W, about 2 - 4 % of Krytox® oil, wax and the remainder is primarily water with additives, substantially as noted above.
  • the Krytox® oil is a perfluoropolyether and is available from DuPont. This embodiment does not contain any silicone and is preferably 5 used on new and relatively new vehicles.
  • the inventive articles are made by impregnating the nonwoven fabric with the polishing liquid by loading to at least about 200% of the weight of the nonwoven fabric and preferably at least about 220%.
  • the polishing liquid can be loaded to as much as 280%.
  • the polishing liquid is o preferably distributed uniformly throughout the nonwoven fabric.
  • the polishing liquid is preferably applied to the fabric by spraying. However, other appropriate methods, such as dipping and coating could be used as long as the desired amount and distribution of the polishing liquid is achieved. Because the article is impregnated with liquid it would be 5 provided in an appropriate container/dispenser as would be well known to those in the art.
  • Example 1 Silicone wipe.
  • Example 2 Non-silicone wipe.
  • Example 3 Silicone Wipe.
  • Sheen was measured as reflectance at an 85° angle, with the higher number representing the better sheen.
  • the range is from 0 for a total matte to 100 for black glass.
  • the surface tension for both oil and water was tested using a DuPont Test Kit, uses two series of liquids of varying surface tension - one for water resistance & one for oil resistance. The series ranges from 1 to 6, with 6 as the best rating.
  • the resistance to the effects of washing was determined by the number of times that the automobile could be washed until water beading became negligible.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)

Abstract

A wiping article for polishing hard painted surfaces, particularly automotive finishes, comprising a fabric substrate impregnated with a solution of fluorine compounds or a solution of fluorine and silicone compounds.

Description

TITLE OF INVENTION
A POLISHING ARTICLE CONTAINING POLYTETRAFLUOROETHYLENE 5
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to articles containing a polishing composition 0 for polishing hard painted surfaces and particularly directed to polishing automotive finishes.
2. Description of Related Art
There is a wide variety of products available for wiping and 5 particularly for the wiping/polishing of automobiles and other painted articles where appearance is important. These products can be liquid or waxes that may be wiped onto a car and then buffed to a shine after drying. Solid waxes are known that are applied by wiping a cloth or some applicator onto the wax to transfer wax to the cloth and then applying the 0 wax to the car. After drying, these solid waxes are also buffed to a shine. It is also known that such auto polishes can be formed utilizing silicone oil rather than wax. Such polishes do not require buffing; however, they do not form a long-lasting protective coating on the car.
U.S. Pat. No 3,965,518 discloses a disposable impregnated wiper 5 for treatment of household furnishings. The wiper is a cellulosic substrate having a bonding material impregnated in a fine pattern on the surface. The polish is an oil and water emulsion having an internal phase of mineral oil and silicone fluid that serves as a furniture polish.
U.S. Pat. No. 4,683,001 discloses a cloth that is coated or o impregnated in a discontinuous manner with a polish composition. The polish composition comprises a silicone oil, a detergent and soap or wax. In a particularly preferred form, the cloth comprises a polypropylene meltblown material that has been treated with a surfactant, and the wax is a combination of saponified and non-saponified waxes. 5 EP Publication 1035200 (Soft 99 Corp, Japan) discloses a polishing cloth wherein a fluorine compound can be used as a water-repellent component. The reference also discloses generally that the fluorine compound can be tetrafluoroethylene, but does not provide any details or any examples directed to its use. Moreover, the reference discloses that the fabric portion of the cloth is made with a particular ratio of lipophilic to hydrophilic fibers.
U.S. Pat. No. 6475934 is related to EP Publication 1035200 and claims a polishing cloth, wherein trimethyl siloxy silicate is used as a water-repellent component. U.S. Pat. No. 6309984 is assigned to the same entity and claims trimethyl siloxy silicate for use in a water repellency supply cloth directed to use in polishing automobile bodies.
DETAILED DESCRIPTION OF THE INVENTION
The present invention is directed to an article for polishing surfaces made by impregnating a fabric substrate with a polishing liquid that contains a certain percentage of a polytetrafluoroethylene in the form of a dry film dispersed in water. The article provides durability, protection and a high-level shine particularly to painted hard surfaces, such as those on vehicles, boats or the like.
The article performs well and is easy to use. The article provides a high gloss after polishing that is significantly higher than that achieved with conventional polishes. This is because the inventive article does not leave a milky haze over the paint film, which may occur with standard polishes.
Also, the inventive article provides a longer lasting protective coating than conventional polishes.
The article comprises a nonwoven fabric substrate made by hydroentangling, meltblowing, spunbonding or other suitable methods to which a polishing liquid is added. The fabric substrate can be woven or knit, but a nonwoven would be preferable, especially from a cost standpoint. A preferred fabric for the substrate would be Sontara® 9421 , a hydroentangled nonwoven fabric of 70% rayon/30% polyester at a basis weight of 75 grams per square meter, available from E.I. du Pont de Nemours and Company, Wilmington, DE (DuPont). The Sontara® 9421 is preferably used at a thickness of 0.5 mm and can be either apertured or non-apertured.
One embodiment of the polishing liquid comprises about 3.5 - 4.0 weight percent (wgt %) Krytox® DF/W, about 2 - 4 wgt % of a silicone compound, a wax and various additives, such as, abrasives, perfumes, biocides, thickeners, emulsifiers and the like. The remainder and greatest portion is water. The silicone is preferably in the form of polydimethylsiloxane. The Krytox® DF/W is a 20% aqueous dispersion of polytetrafluoroethylene and is available from DuPont. Krytox® DF/W is a polytetrafluoroethylene, as is Teflon®, also available from DuPont. However, Krytox® DF/W has a much lower molecular weight than does Teflon® (about 3300 vs. greater than one million, respectively) and a 5 much different morphology (flat platelets vs. spherical shape, respectively). The particle size of the platelets is about 5-7 micrometers and these small particles are believed to fit in the pores of the painted surfaces and as such provide a longer lasting protective coating compared to other conventional polishing systems. 0 In another embodiment, the polishing liquid also comprises about
3.5 - 4.0 percent by weight of Krytox® DF/W, about 2 - 4 % of Krytox® oil, wax and the remainder is primarily water with additives, substantially as noted above. The Krytox® oil is a perfluoropolyether and is available from DuPont. This embodiment does not contain any silicone and is preferably 5 used on new and relatively new vehicles.
The inventive articles are made by impregnating the nonwoven fabric with the polishing liquid by loading to at least about 200% of the weight of the nonwoven fabric and preferably at least about 220%. The polishing liquid can be loaded to as much as 280%. The polishing liquid is o preferably distributed uniformly throughout the nonwoven fabric. The polishing liquid is preferably applied to the fabric by spraying. However, other appropriate methods, such as dipping and coating could be used as long as the desired amount and distribution of the polishing liquid is achieved. Because the article is impregnated with liquid it would be 5 provided in an appropriate container/dispenser as would be well known to those in the art.
EXAMPLES Various types of polishing systems were evaluated against the inventive articles. Several types of wipes that had been pre-saturated with 0 polishing and/or cleaning agents were tested. Also tested were polishing agents that were either applied directly onto a surface and then wiped with a separate cloth or applied onto a separate cloth and then applied onto a surface. In each of the examples, the test was performed on an automobile that had been treated with T cut, then washed and dried. T Cut is an abrasive paste used to prepare the paint surface by removing any previous polishes, oxidation, etc. to produce a consistent surface. Although the Glosser product is claimed to be effective on a slightly soiled automobile, it was tested on a clean automobile. The polishes and polishing wipes used were as follows:
Comparative Example A - TurtleWax® liquid.
Comparative Example B - Simoniz liquid with Teflon® (Teflon® is a registered trademark of DuPont).
Comparative Example C - Glosser wipe. (Glosser is available from
Emgee/Clean Tools, Wesmont, IL, USA)
Example 1 - Silicone wipe.
Example 2 - Non-silicone wipe.
Example 3 - Silicone Wipe.
The results are presented in the tables below. Sheen was measured as reflectance at an 85° angle, with the higher number representing the better sheen. The range is from 0 for a total matte to 100 for black glass. The surface tension for both oil and water was tested using a DuPont Test Kit, uses two series of liquids of varying surface tension - one for water resistance & one for oil resistance. The series ranges from 1 to 6, with 6 as the best rating. The resistance to the effects of washing was determined by the number of times that the automobile could be washed until water beading became negligible.
Table 1
Figure imgf000005_0001

Claims

WHAT IS CLAIMED IS:
1. An article for polishing surfaces, comprising a fabric substrate impregnated with a solution comprising a low molecular weight polytetrafluoroethylene aqueous dispersion and silicone.
2. An article for polishing surfaces, comprising a fabric substrate impregnated with a solution comprising a low molecular weight polytetrafluoroethylene aqueous dispersion and perfluoropolyether.
3. The article of claim 1 or 2, wherein the fabric substrate is a hydroentangled nonwoven of 70% rayon and 30% polyester.
4. The article of claim 1 , wherein the solution comprises 3.5 - 4.0 percent low molecular weight polytetrafluoroethylene aqueous dispersion by weight of the solution and 2 - 4 percent silicone by weight of the solution.
5. The article of claim 1 or 2, wherein the low molecular weight polytetrafluoroethylene has a molecular weight of about 3300.
6. The article of Claim 1 or 2, wherein the solution is loaded into the substrate at least at about 200 percent of the weight of the substrate.
7. The article of claim 2, wherein the solution comprises 3.5 - 4.0 percent of low molecular weight polytetrafluoroethylene aqueous dispersion by weight of the solution and 2- 4 percent of perfluoropolyether by weight of the solution.
8. The article of either of claims 1 or 4, wherein the silicone is polydimethylsilicone.
PCT/US2002/036918 2001-11-16 2002-11-18 A polishing article containing polytetrafluoroethylene Ceased WO2003044113A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002352761A AU2002352761A1 (en) 2001-11-16 2002-11-18 A polishing article containing polytetrafluoroethylene

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US33304601P 2001-11-16 2001-11-16
US60/333,046 2001-11-16

Publications (1)

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WO2003044113A1 true WO2003044113A1 (en) 2003-05-30

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WO (1) WO2003044113A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012009404A1 (en) * 2010-07-14 2012-01-19 E. I. Du Pont De Nemours And Company Surface coated polyester-based fibrous substrate
ITVE20130008A1 (en) * 2013-03-18 2014-09-19 Eurofibre Spa WATER DISPERSION USED AS A GUIDING AID TO PRODUCE FELTS IN MINERAL FIBERS.-

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6438480A (en) * 1987-08-04 1989-02-08 Uiruson Kk Coating treatment for coated surface
US5081171A (en) * 1989-02-14 1992-01-14 Nixon Charles R Composition for sealing of painted or metal surfaces
US5753607A (en) * 1996-04-01 1998-05-19 Sara Lee Corporation Cleaning and polishing composition
EP1035200A2 (en) * 1999-03-06 2000-09-13 Soft 99 Corporation Wet cloth for cleaning, water repellent finish and polishing of automobile paint film
EP1057924A2 (en) * 1999-05-28 2000-12-06 Soft 99 Corporation Agent for treating water repellency supply cloth and water repellency supply cloth
EP1199340A2 (en) * 2000-10-19 2002-04-24 Soft99 Corporation Paintwork coating composition and coating cloth

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6438480A (en) * 1987-08-04 1989-02-08 Uiruson Kk Coating treatment for coated surface
US5081171A (en) * 1989-02-14 1992-01-14 Nixon Charles R Composition for sealing of painted or metal surfaces
US5753607A (en) * 1996-04-01 1998-05-19 Sara Lee Corporation Cleaning and polishing composition
EP1035200A2 (en) * 1999-03-06 2000-09-13 Soft 99 Corporation Wet cloth for cleaning, water repellent finish and polishing of automobile paint film
EP1057924A2 (en) * 1999-05-28 2000-12-06 Soft 99 Corporation Agent for treating water repellency supply cloth and water repellency supply cloth
US6309984B1 (en) * 1999-05-28 2001-10-30 Soft 99 Corporation Agent for treating water repellency supply cloth and water repellency supply cloth
EP1199340A2 (en) * 2000-10-19 2002-04-24 Soft99 Corporation Paintwork coating composition and coating cloth

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section Ch Week 198912, Derwent World Patents Index; Class A14, AN 1989-088885, XP002233413 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012009404A1 (en) * 2010-07-14 2012-01-19 E. I. Du Pont De Nemours And Company Surface coated polyester-based fibrous substrate
US9708505B2 (en) 2010-07-14 2017-07-18 E I Du Pont De Nemours And Company Surface coated polyester-based fibrous substrate
ITVE20130008A1 (en) * 2013-03-18 2014-09-19 Eurofibre Spa WATER DISPERSION USED AS A GUIDING AID TO PRODUCE FELTS IN MINERAL FIBERS.-
EP2781635A1 (en) * 2013-03-18 2014-09-24 EUROFIBRE S.p.A. Aqueous dispersion used as needling aid for producing needle mineral fiber felts and use of an aqueous dispersion

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