초록 ▼

A novel thermosettable composition-of-matter is disclosed. One embodiment of the composition-of-matter includes a polymeric thermosettable ingredient having at least three acetoacetoxy-type functional pendant moieties as well as at least three acid-functional pendant moieties. Another embodiment of

A novel thermosettable composition-of-matter is disclosed. One embodiment of the composition-of-matter includes a polymeric thermosettable ingredient having at least three acetoacetoxy-type functional pendant moieties as well as at least three acid-functional pendant moieties. Another embodiment of the composition-of-matter includes at least two polymeric thermosettable ingredients, one of which includes at least three acid-functional pendant moieties and the other of which includes at least three acetoacetoxy-type functional pendant moieties. The novel composition is characterized in that the acid-functional and acetoacetoxy-type functional pendant moieties crosslinkably-react together, when subjected to elevated-temperature conditions for a predetermined period of time, thereby producing a crosslinked polymeric network. The novel thermosettable composition-of-matter can be used "as is" if either of the polymeric thermosettable components is a "fluid" (i.e., is able to flow) at room temperature. Otherwise, the novel thermosettable composition-of-matter may be formulated into a solvent-borne coating composition, a water-borne coating composition, or a powder coating composition.

대표청구항 ▼

[ That which is claimed as invention includes the following:] [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 [ STR 9 ] wherein R.sub.1 i

[ That which is claimed as invention includes the following:] [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 [ STR 9 ] 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; [ STR 10 ] 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 [ STR 11 ] 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, andwherein the acid -functional and acetoacetoxy functional pendant moieties are the only moieties present in the polymer which are crosslinkably reactive with each other, andwherein 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., andwherein 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, andwherein any additional crosslinking agents are absent from said polymeric thermoset composition.