Claims
- 1. A polymeric thermoset composition consisting essentially of:
- A thermosettable polymer consisting essentially of the reaction product of an acetoacetoxy moiety-containing monomer represented by the structure ##STR9## wherein R.sub.1 is either H or is a C.sub.1 to C.sub.10 alkyl group; wherein R.sub.2 is a C.sub.1 to C.sub.10 alkyl group; ##STR10## wherein X is either non-existent or is wherein Y is either non-existent or a divalent aromatic group, or is a divalent aliphatic cyclic group, or is --(CH.sub.2).sub.j -- and j is an integer of from 1 to 10, inclusive, or is --(CH.sub.2 --CHR.sub.1 --O).sub.m --CH.sub.2 --CHR.sub.1 --wherein Y is existent ##STR11## when X is and m is either zero or is an integer of from 1 to 9, inclusive; and an acid-functional monomer containing an acid-functional pendant moiety; wherein the polymer has an average of at least three acetoacetoxy functional pendant moieties and an average of at least three acid-functional pendant moieties per polymer molecule, and
- wherein the acid -functional and acetoacetoxy functional pendant moieties are the only moieties present in the polymer which are crosslinkably reactive with each other, and
- wherein the acid-functional and the acetoacetoxy functional pendant moieties are characterized as reacting with each other to form a thermoset composition through crosslinking at a temperature of at least 180.degree. C., and
- wherein the thermosettable polymer is characterized as having a number-average molecular weight of more than 3,000, said thermosettable polymer being crosslinkable at said molecular weight of more than 3,000, and
- wherein any additional crosslinking agents are absent from said polymeric thermoset composition.
- 2. The polymeric thermoset composition of claim 1 wherein the thermosettable polymer is the reaction product of an acetoacetoxy-functional moiety-containing monomer selected from the group consisting of acetoacetoxyethyl methacrylate, acetoacetoxyethyl acrylate, allyl acetoacetate, vinyl acetoacetate, and combinations thereof, an acid-functional monomer selected from the group consisting of ethacrylic acid, acrylic acid, fumaric acid-monoethyl ester, fumaric acid, itaconic acid, maleic acid, methacrylic acid, fumaric acid-monomethyl ester, methyl hydrogen maleate, and combinations thereof, and, optionally a monomer that is addition polymerizable with the acetoacetoxy-functional moiety-containing monomer and the acid-functional monomer that is selected from the group consisting of an acrylic acid ester monomer, a methacrylic acid ester monomer, a monomeric alkene, and a vinylic monomer.
- 3. The polymeric thermoset composition of claim 2 wherein the acetoacetoxy-functional moiety-containing monomer is selected from the group consisting of acetoacetoxyethyl methacrylate, acetoacetoxyethyl acrylate and combinations thereof, the acid-functional monomer is selected from the group consisting of acrylic acid, methacrylic acid, and combinations thereof, and the thermosettable polymer has a number average molecular weight of more than 4000.
- 4. The polymeric thermoset composition of claim 1 further including a volatile liquid carrier.
- 5. The polyemeric thermoset composition of claim 4 wherein the volitale liquid carrier is selected from the group consisting of water, C.sub.5 to C.sub.9 alcohols, diols or triols, cyclohexane, toluene, methyl isobutyl ketone, tetrahydrofuran, 1,3-dioxane, 1,4-dioxane, acetone, ethyl acetate, hexane, ethyl benzene, diethyl ether of diethylene glycol, dimethyl ether of diethylene glycol, diethyl ether of ethylene glycol, ethylene glycol ether acetate, glycol dimethyl ether, triglyme, methyl amyl ketone, xylene, methyl ethyl ketone, propylene glycol monomethyl ether acetate, and ethoxy ethyl acetate.
- 6. The polymeric thermoset composition of claim 4 wherein the volatile liquid carrier contains water.
- 7. The polymeric thermoset composition of claim 1 that further contains a pigment.
- 8. The polymeric thermoset composition of claim 1 that further contains a leveling aid.
- 9. The polymeric thermoset composition of claim 1 that further contains a resin in addition to the thermosettable polymer.
- 10. The polymeric thermoset composition of claim 1 wherein the acetoacetoxy moiety-containing monomer is selected from the group consisting of acetoacetoxymethyl methacrylate, acetoacetoxyethyl acrylate, allyl acetoacetate, vinyl acetoacetate and combinations thereof, and the acid-functional monomer is selected from the group consisting of monomers represented by the structure ##STR12## wherein R.sub.1 is either H or is a C.sub.1 to C.sub.10 alkyl group; and Z is either non-existent, or is a divalent aromatic group, or is a divalent aliphatic cyclic group, or may be represented by the structure--(CH.sub.2 --).sub.k wherein k is an integer of from 1 to 10, inclusive.
- 11. The polymeric thermoset composition of claim 1 wherein the acetoacetoxy moiety-containing monomer is selected from the group consisting of acetoacetoxymethyl methacrylate, acetoacetoxyethyl acrylate, allyl acetoacetate, vinyl acetoacetate and combinations thereof, and the acid-functional monomer is selected from the group consisting of ethacrylic acid, acrylic acid, fumaric acid-monoethyl ester, fumaric acid, itaconic acid, maleic acid, methacrylic acid, fumaric acid monomethyl ester, methylhydrogen maleate, and combinations thereof.
- 12. The polymeric thermoset composition of claim 1 wherein the acetoacetoxy moiety-containing monomer is selected from the group consisting of acetoacetoxymethyl methacrylate, acetoacetoxyethyl acrylate, and combinations thereof, and the acid-functional monomer is selected from the group consisting of acrylic acid, methacrylic acid, and combinations thereof.
- 13. The polymeric thermoset composition of claim 1 wherein the thermosettable polymer consists essentially of the reaction product of an acetoacetoxy moiety-containing monomer, an acid functional monomer and at least one additional monomer that is addition polymerizable with the acetoacetoxy moiety-containing monomer and the acid functional monomer, and the additional monomer is selected from the group consisting of an acrylic acid ester, a methacrylic acid ester, a monomeric alkene, and a vinylic monomer.
REFERENCE TO RELATED APPLICATION
This application is a continuation application Ser. No. 08/326,563 filed on Oct. 20. 1994 now abandoned which is a Division of U.S. Ser. No. 07/857,366 filed on Mar. 25, 1992, now U.S. Pat. No. 5,391,624, which is a Continuation-in-Part of U.S. Ser. No. 07/833,250 filed on Feb. 10, 1992, abandoned.
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Textbook of Polymer Science (Second Edition) published by John Wiley and Sons, Inc., 1962, 1971. |
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Divisions (1)
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Number |
Date |
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Parent |
857366 |
Mar 1992 |
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Continuations (1)
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Number |
Date |
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326563 |
Oct 1994 |
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Continuation in Parts (1)
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Number |
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833250 |
Feb 1992 |
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