Claims
- 1. A coating composition comprising from about
- I. 1.0 to 75 parts by weight of an acrylic modified hydroxy-functional polyester diluent obtained by the reaction of:
- A. 50 to 100 parts by weight of a hydroxy-functional polyester having a number average molecular weight less than 500 derived from the reaction of from about
- (a) 40 to 60 parts by weight of at least one triol having a molecular weight less than about 200,
- (b) 10 to 30 parts by weight of an unsaturated monocarboxylic acid having the formula: ##STR4## wherein R.sup.2 is either hydrogen or an alkyl group of 1 to 3 carbon atoms and R.sub.2 is an aliphatic group of 1 to 4 carbon atoms or an aryl group,
- (c) 10 to 30 parts by weight of a saturated monocarboxylic acid having the formula:
- R--COOH
- wherein R is hydrogen or a branched alkyl or straight chain alkyl of 1 to 6 carbon atoms, and
- (d) 1 to 15 parts by weight of a benzoic acid; with
- B. 1 to 50 parts by weight of at least one acrylic monomer copolymerizable with said hydroxy-functional polyester;
- II. 25 to 99 parts by weight of a thermosetting or thermoplastic film-forming polymer, and
- III. 0 to 40 parts by weight of an inorganic pigment.
- 2. The coating composition of claim 1 further characterized in that at least one of the acrylic monomers copolymerizable with said hydroxy-functional polyester is a hydroxy-functional acrylic monomer.
- 3. The coating composition of claim 1 further characterized in that the inorganic pigment comprises titanium dioxide.
- 4. The coating composition of claim 1 further characterized in that the film-forming polymer is a thermoplastic polymer present in an amount ranging from about 50 to 90 parts by weight.
- 5. The coating composition of claim 1 further characterized as incorporating an effective amount of a crosslinking agent selected from the group consisting of amine aldehydes and isocyanates.
- 6. The coating composition of claim 5 further characterized in that the crosslinking agent is present in an amount ranging up to about 30 parts by weight based on the combination of the diluent and the film-forming polymer.
- 7. The coating composition of claim 4 further characterized in that a crosslinking agent is present in an amount ranging up to about 30 parts by weight based on the combination of the diluent and the film-forming polymer.
- 8. The coating composition of claim 7 further characterized in that the crosslinking agent is selected from the group consisting of amine aldehydes and isocyanates.
- 9. The coating composition of claim 2 further characterized in that an effective amount of a crosslinking agent is present in an amount sufficient to crosslink the hydroxy-functional diluent and the film-forming polymer.
Parent Case Info
This is a divisional of application Ser. No. 07/815,658, filed on Dec. 31, 1991, (now U.S. Pat. No. 5,248,717), which was in turn, a divisional of Ser. No. 07/286,431, filed on Dec. 19, 1988, (now U.S. Pat. No. 5,104,955), which was in turn, a divisional of Ser. No. 07/043,051, filed on Apr. 27, 1987, (now U.S. Pat. No. 5,004,828).
US Referenced Citations (13)
Divisions (3)
|
Number |
Date |
Country |
Parent |
815658 |
Dec 1991 |
|
Parent |
286431 |
Dec 1988 |
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Parent |
43051 |
Apr 1987 |
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