Claims
- 1. A thermoplastic coating composition comprising
- (a) about 2 to about 7 parts by weight acrylic monomer, polymerized in the presence of
- (b) one part by weight fully reacted hydroxy terminated polyurethane containing no terminal unsaturation
- wherein said coating composition contains no free unreacted monomer.
- 2. The coating composition of claim 1 containing pigment in a pigment volume concentration of about 0.1 to 14%.
- 3. The pigmented coating composition of claim 2 in which the acrylic monomer is selected from acrylic and methyl methacrylic monomers.
- 4. The pigmented coating composition of claim 2 wherein the polyurethane is formed from the reaction product of a diisocyanate component selected from the group consisting of isophorone diisocyanate, 1,6-hexamethylene diisocyanate, methylcyclohexylene diisocyanate and bis (4-isocyanatocyclohexyl) methane and a mixture of high and low molecular weight polyols.
- 5. The pigmented coating composition of claim 4 in which the fully reacted polyurethane is formed in a final step by capping with a difunctional hydroxyl compound selected from the group consisting of 1,4 butanediol, ethylene glycol and propylene glycol.
- 6. A thermoplastic coating composition comprising
- (a) 3 parts by weight methyl methacrylic monomer, polymerized in the presence of
- (b) 1 part by weight 1,4 butanediol capped polyurethane
- wherein said coating composition contains no free unreacted monomer.
- 7. The coating composition of claim 6 containing pigment in a pigment volume concentration of about 0.1 to 14%.
- 8. The pigmented coating composition of claim 7 in which the acrylic monomer is selected from acrylic and methyl methacrylic monomers.
- 9. The pigmented coating composition of claim 7 wherein the polyurethane is formed from the reaction product of a diisocyanate component selected from the group consisting of isophorone diisocyanate, 1,6 hexamethylene diisocyanate, methylcyclohexylene diisocyanate and bis (4-isocyanateocyclohexyl) methane and a mixture of high and low molecular weight polyols.
Parent Case Info
This is a continuation, of application Ser. No. 000,465, filed Jan. 2, 1979, abandoned.
US Referenced Citations (16)
Continuations (1)
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Number |
Date |
Country |
Parent |
465 |
Jan 1979 |
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