Composition comprising condensation cross-linkable novel methacrylate polymers

Claim 2

A curable composition comprising (A) an anionically-polymerized addition polymer of at least one ester of methacrylic acid, the polymer comprising mers having condensation-crosslinkable functionality, wherein the average chain length of the polymer, n, is about 6 to about 50 mers; and (B) a crosslinking coreactant; in a weight ratio of (A) to (B) from about 1:99 to about 99:1.

Claim 3

The composition of claim 1 wherein the anionically-polymerized polymer is an alkoxide-polymerized polymer.

Claim 4

The composition of claim 2 wherein at least about 85% by weight of the molecules of the polymer have chain lengths of about √2n to about 2n mers.

Claim 5

The composition of claim 3 wherein the average chain length is about 6 to about 25 mers.

Claim 6

The composition of claim 3 wherein the polymer is a copolymer of at least one (C 1 -C 24 )alkyl methacrylate and at least one copolymerizable ethylenically-unsaturated ester of methacrylic acid having condensation-crosslinkable functionality.

Claim 7

The composition of claim 5 wherein the copolymerizable ester is 2-oxazolidinylethyl methacrylate, 2-(2-isopropyloxazolidinyl)ethyl methacrylate, or t-butylaminoethyl methacrylate.

Claim 8

The composition of claim 6 wherein the alkyl methacrylate is a (C 1 -C 4 )alkyl methacrylate.

Claim 9

The composition of claim 7 wherein the alkyl methacrylate is methyl methacrylate.

Claim 10

The composition of claim 3 wherein the polymer comprises mers having the structure ##STR10## wherein Y is a halogen atom, an amino group, a (C 1 -C 4 )-alkylamino group, a di(C 1 -C 4 )alkylamino group, a hydroxy(C 1 -C 4 )alkylamino group, a bis-hydroxy(C 1 -C 4 )alkylamino group, or a group of the formula or, wherein R is a hydrogen atom, a (C 2 -C 8 )aminoalkyl group, an alkylaminoalkyl group having up to 6 carbon atoms, a (C 2 -C 8 )isocyanatoalkyl group, a (C 2 -C 8 )hydroxyalkyl group, a 1,3-oxazolidin-3-yl-(C 2 -C 4 )alkyl group, optionally having up to two (C 1 -C 4 )alkyl substituents on the oxazolidinyl ring, a (C 1 -C 4 )-aldimino(C 2 -C 6 )-alkyl group, a (C 1 -C 4 )aldimino(C 2 -C 6 )alkoxyalkyl group, a (C 3 -C 8 )ketimino(C 2 -C 6 )alkyl group, a (C 3 -C 8 )ketimino(C 2 -C 6 )alkoxyalkyl group, a 1,3-dioxolan-4-yl(C 2 -C 4 )-alkyl group, optionally having up to two (C 1 -C 4 )alkyl substituents on the dioxolanyl ring, an epoxy(C.sub. 2 -C 4 )-alkyl di(C 1 -C 4 )alkyl ammonium(C 2 -C 4 )alkyl group, a (C 2 -C 8 )epoxy alkyl group, a 3-chloro-2-hydroxypropyldimethylammoniumethyl group, a 3-chloro-2-hydroxypropyl group, or a sodium potassium, or ammonium cation.

Claim 11

The composition of claim 9 wherein the polymer also comprises mers of the structure ##STR11## wherein R 1 is a (C 1 -C 24 )alkyl group.

Claim 12

The composition of claim 10 wherein R is a (C 2 -C 8 )-hydroxyalkyl group.

Claim 13

The composition of claim 10 wherein R is a 1,3-oxazolidinylethyl group or a 2-alkyl-1,3-oxazolidinylethyl group.

Claim 14

The composition of claim 10 wherein R is a hydrogen atom.

Claim 15

The composition of claim 13 wherein the polymer also comprises mers wherein R is a (C 2 -C 8 )hydroxyalkyl group.

Claim 16

The composition of claim 3 wherein the terminal group is an acid group.

Claim 17

The composition of claim 3 wherein the initial group and the terminal group are acid groups.

Claim 18

The composition of claim 16 wherein at least one additional group is an acid group.

Claim 19

The composition of claim 10, wherein R is a (C 2 -C 8 ) hydroxyalkyl group and the coreactant is an aminoplast nitrogen resin and optionally comprising a pigment.

Claim 20

The composition of claim 10, wherein R is a (C 2 -C 8 ) hydroxyalkyl group and the coreactant is a polycarboxylic acid and optionally comprising a pigment.

Claim 21

The composition of claim 19 wherein the polycarboxylic acid is a carboxyl-containing polymer.

Claim 22

The composition of claim 10 wherein the coreactant is a polyepoxide and optionally comprising a pigment.

Claim 23

The composition of claim 10, wherein R is a 1,3-oxazolidinylethyl group or a 2-alkyl-1,3-oxazolidinylethyl group, the coreactant is a polyisocyanate and optionally comprising a pigment.

Claim 24

The composition of claim 10, wherein R is a hydrogen atom and the coreactant is an aminoplast nitrogen resin and optionally comprising a pigment.

Claim 25

The composition of claim 10, wherein R is a hydrogen atom and the coreactant is polyepoxide and optionally comprising a pigment.

Claim 26

The composition of claim 10, wherein R is a hydrogen atom and the coreactant is polyhydroxyl compound and optionally comprising a pigment.

Claim 27

The composition of claim 23 wherein the polymer also comprises mers wherein R is a (C 2 -C 8 ) hydroxyalkyl group.

Claim 28

The composition of claim 1 in powdered form.

Claim 29

The composition of claim 27, the polymer comprising methacrylate mers having a carboxylic acid group or, (C 2 -C 8 ) hydroxyalkyl group or a mixture of these mers.

Claim 30

An article of manufacture comprising a substrate having thereon a cured coating of the composition of claim 1.

Claim 31

The article of claim 29 wherein the substrate is wood, metal, paper, plastic, textile, ceramic or leather.