US5143949A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aqueous based, strippable coating composition and method
Assignee: Groco Specialty Coatings Co
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Filing: 1991-12-02
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Granted: 1992-09-01
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Expires: 2011-12-02
Abstract
Abstract A strippable coating composition is shown for use as a temporary protective coating on a variety of substrates. The composition includes a water based polymeric emulsion which is dispersed in an aqueous carrier to form a stable emulsion. Release aids are incorporated in the composition which allow the protective coating to be removed by peeling or washing off with water.
Inventors
- 👤 George W. Grogan
- 👤 Robert H. Boyd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:34
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/008; C03; C03C; C03C2218/00; C03C2218/30; C03C2218/355
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
167 words
A clear, strippable coating composition applied as a film which when dried has a thickness in the range from about 1.5 to 5.0 mils, the strippable coating composition, comprising: a blend of non-volatile components comprising about 41-71% by weight of the coating composition, including: about 34-54% by weight polyvinyl acetate emulsion; about 7-15% by weight of a release agent selected from the group consisting of paraffin wax emulsion, polyvinyl alcohol and mixtures thereof; about 0.1-0.6% by weight non-ionic surfactant as a wetting aid; about 0.1-0.6% by weight defoamer; about 0.1-0.8% by weight dispersing aid; and about 1-5% by weight thickener; the strippable coating composition also comprising about 29-59% by weight of the coating composition of volatile components, including: about 0.1-2.5% by weight plasticizer the plasticizer component being selected from the group consisting of glycerine, dibutylphthalate and 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate; about 28.9-56.5% by weight water; the strippable coating composition being characterized as drying to form a clear film which is strippable for up to one year by water spray.
Claim 2
Dependent Claim
167 words
A clear, strippable coating composition applied as a film which when dried has a thickness in the range from about 1.5 to 5.0 mils, the strippable coating composition, comprising: a blend of non-volatile components comprising about 41-71% by weight of the coating composition, including: about 34-54% by weight polyvinyl acetate emulsion; about 7-15% by weight of a release agent selected from the group consisting of paraffin wax emulsion, polyvinyl alcohol and mixtures thereof; about 0.1-0.6% by weight non-ionic surfactant as a wetting aid; about 0.1-0.6% by weight defoamer; about 0.1-0.8% by weight dispersing aid; and about 1-5% by weight thickener; the strippable coating composition also comprising about 29-59% by weight of the coating composition of volatile components, including: about 0.1-2.5% by weight plasticizer the plasticizer component being selected from the group consisting of glycerine, dibutylphthalate and 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate; about 28.9-56.5% by weight water; the strippable coating composition being characterized as drying to form a clear film which is strippable for up to one year by water spray.
Claim 3
Dependent Claim
235 words
A clear, strippable coating composition adapted to form a temporary protective coating for a vehicle exterior surface when applied as a film which, when dried, has a thickness in the range from about 1.5 to 5.0 mils, the strippable coating composition, comprising: a blend of non-volatile components comprising about 41-71% by weight of the coating composition, including: about 34-54% by weight polyvinyl acetate emulsion; about 7-15% by weight of a release agent which comprises a mixture of paraffin wax emulsion and polyvinyl alcohol, the weight ratio of polyvinyl alcohol to paraffin wax emulsion in the mixture being in the range from about 1:1 to about 2:1; about 0.1-0.65 by weight non-ionic surfactant as a wetting aid, the non-ionic surfactant being a nonylphenol polyethylene glycol ether; about 0.1-4 0.6% by weight defoamer; about 0.1-0.8% by weight phosphate ester dispersing aid sold commercially as STRODEX PK-90, having a boiling point of 212° F. and a specific gravity of 1.15; and about 1-5% by weight hydroxyethylcellulose as a thickener; the strippable coating composition also comprising about 29-59% by weight of the coating composition of volatile components, including: about 0.1-2.5% by weight plasticizer, the plasticizer component being selected from the group consisting of glycerine, dibutyl phthalate, and 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate; and about 28.9-56.5% by weight water; the strippable coating composition being characterized as drying to form a clear film which is strippable for up to one year by water spray.
Claim 4
Dependent Claim
235 words
A clear, strippable coating composition adapted to form a temporary protective coating for a vehicle exterior surface when applied as a film which, when dried, has a thickness in the range from about 1.5 to 5.0 mils, the strippable coating composition, comprising: a blend of non-volatile components comprising about 41-71% by weight of the coating composition, including: about 34-54% by weight polyvinyl acetate emulsion; about 7-15% by weight of a release agent which comprises a mixture of paraffin wax emulsion and polyvinyl alcohol, the weight ratio of polyvinyl alcohol to paraffin wax emulsion in the mixture being in the range from about 1:1 to about 2:1; about 0.1-0.65 by weight non-ionic surfactant as a wetting aid, the non-ionic surfactant being a nonylphenol polyethylene glycol ether; about 0.1-4 0.6% by weight defoamer; about 0.1-0.8% by weight phosphate ester dispersing aid sold commercially as STRODEX PK-90, having a boiling point of 212° F. and a specific gravity of 1.15; and about 1-5% by weight hydroxyethylcellulose as a thickener; the strippable coating composition also comprising about 29-59% by weight of the coating composition of volatile components, including: about 0.1-2.5% by weight plasticizer, the plasticizer component being selected from the group consisting of glycerine, dibutyl phthalate, and 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate; and about 28.9-56.5% by weight water; the strippable coating composition being characterized as drying to form a clear film which is strippable for up to one year by water spray.
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