Conformable coating composition

1. A conformable coating composition comprising:

a) an acrylate copolymer having a T m ≥30° C. derived from interpolymerized crystalline monomer units of monomers having a pendent crystallizable group:

b) optional cyanoacrylate monomers;

c) optional cyanoacrylate stabilizer; and

d) volatile solvent having a solubility parameter from 4.9-12.5 (cal/cm 3 ) 1/2 ; wherein the copolymer is derived from:

1) 10 to 90 parts by weight of crystalline monomers having a T m of ≥30° C. selected from:

a) (meth)acrylate ester monomers of linear, primary alkanols of at least 20 carbon atoms;

b) (meth)acrylate ester monomers of secondary alcohols or singly branched primary alkanols of at least 24 carbon atoms;

c) linear alkenyl esters of at least 24 carbon atoms;

d) aralkyl or aralkenyl esters of having a linear alkyl of at least 24 carbon atoms; or

e) crystalline macromers of (meth)acrylate ester monomers having a pendent alkyl group of at least 16 carbon atoms;

2) 0 to 50 parts by weight of high T g monomers having a T g of ≥20° C.;

3) 0 to 60 parts by weight silane functional monomers;

4) 0 to 10 parts by weight of acid functional monomers,

based on 100 parts by weight total monomers;

wherein the dried coating composition has less than 75% failure at 100% elongation.

2. The conformable coating composition of claim 1 wherein the copolymer is further derived from 0.5 to 5 parts by weight of acid-functional monomers.

3. The conformable coating of claim 1 wherein the copolymer is derived from 1 to 50 parts by weight of silane functional monomers.

4. The coating composition of claim 3 wherein the silane functional monomer are of the formula:

A-R 8 -[Si—(R 9 ) 3 ] q , wherein:

A is an ethylenically unsaturated polymerizable group, including vinyl, allyl, vinyloxy, allyloxy, and (meth)acryloyl;

R 8 is a covalent bond or a divalent (hetero)hydrocarbyl group, q is at least one;

R 9 is a monovalent alkyl, aryl or a trialkylsilyloxy group.

5. The coating composition of claim 1 wherein the silane functional monomers are siloxane macromers.

6. The conformable coating of claim 1 wherein the copolymer is derived from a high T g monomer in amounts sufficient that the copolymer has a T g of ≥0° C.

7. The conformable coating of claim 6 wherein the copolymer is derived from 5 to 50 parts by weight of a high T g monomer.

8. The conformable coating composition of claim 1 comprising of a cyanoacrylate monomer in a weight ratio of 2:1 to 1:2 relative to the weight of the crystalline copolymer.

9. The conformable coating composition of claim 8 further comprising a cyanoacrylate stabilizer.

10. The conformable coating composition of claim 1 comprising at least 40 wt. % of solvent relative to a), b) and c).

11. The conformable coating composition of claim 1 wherein the solvent is a siloxane solvent.

12. The conformable coating composition of claim 1 , wherein the copolymer has a molecular weight, M w , from 100,000 to 5,000,000.

13. The coating composition of claim 1 comprising a crystalline copolymer of the formula:

˜[M xstal ] v -[M silane ] w -[M acid ] x -[M highTg ] y ˜, wherein

v is 10 to 90 parts by weight of crystalline monomers having a T m of ≥30° C.;

w is 0 to 60 parts by weight silane functional monomers;

x is 0 to 10 parts by weight of acid functional monomers,

y is 0 to 50 parts by weight of high T g monomers having a T g of ≥20° C.

14. A multilayer article comprising a layer of the conformable film coating composition of claim 13 on a substrate.