Compositions for providing abherent coatings; poly (fluorooyalkylene) urethane acrylates

Claim 2

A radiation curable composition for providing solvent-resistant abhesive coatings characterized in that said composition comprises: a polyfluorinated acrylate compound present in an amount such that said composition is provided with at least 0.05 percent by weight fluorine; a polyethylenically unsaturated crosslinking agent; and a film-forming polymer.

Claim 3

The composition of Claim 1 further characterized by the feature that said polyfluorinated acrylate compound is a polyfluorinated alkyl acrylate or methacrylate having the general formula wherein: R f is a polyfluorinated, saturated monovalent, aliphatic radical; A is an ethylenically unsaturated group selected from the group consisting of and wherein: R is selected from the group consisting of hydrogen and methyl, a is 2 to 6, and R' is selected from the group consisting of a divalent aliphatic group having 2 to 14 carbon atoms, a divalent cycloaliphatic group having about 2 to 14 carbon atoms, and an aryl group having about 6 to 14 carbon atoms; and X is a connecting group selected from the group consisting of and wherein: b is 2 to 12, b' is 1 to 12, and R 2 is selected from the group consisting of hydrogen, a lower alkyl of about 1 to 4 carbon atoms and (̵CH 2 )̵ c A, wherein: A is defined as said A hereinabove, c is 2 or 3, and wherein when R 2 is (̵CH 2 )̵ c A, b is 2 or 3; and wherein when R f contains 6, 7 or more than 7 carbon atoms there are 6 or fewer, 10 or fewer, or 20 or fewer atoms respectively in the chain between R f and A.

Claim 4

The composition of Claim 1 further characterized by the feature that said polyfluorinated acrylate compound is a poly(fluorooxyalkylene)acrylate or methacrylate having the general formula wherein R2 is a divalent poly(fluorooxyalkylene) group having a number average molecular weight of from about 500 to 20,000; A is an ethylenically unsaturated group selected from the group consisting of and wherein: R is selected from the group consisting of hydrogen and methyl, a is an integer having a value of 2 to 6, and R' is selected from the group consisting of a divalent aliphatic or cycloaliphatic group having 2 to 14 carbon atoms and an aryl group having 6 to 14 carbon atoms; Y is selected from the group consisting of -CH 2 - and wherein: b is 2 to 12, R 2 is selected from the group consisting of hydrogen, a lower alkyl of about 1 to 4 carbon atoms, and (̵CH 2 )̵ c A, wherein A is defined as said A hereinabove, c is 2 or 3, and wherein, when R 2 is (̵CH 2 )̵ c A, b is 2 or 3; and Z is selected from the group consisting of CF 3 0-, CF 3 OCF(CF 3 )O-, and -Y-A, wherein Y and A are defined as said Y and A hereinabove.

Claim 5

The composition of Claim 1 further characterized by the feature that said composition further comprises additives selected from the group consisting of coating aids, wetting agents, flatting agents, dyes, ultraviolet absorbers, pigments, particulate materials, monoethylenically unsaturated modifying compounds, a source of free radicals, sensitizers, and mixtures thereof.

Claim 6

An article comprising a substrate having a radiation curable coating composition carried thereon characterized in that said radiation curable coating composition is the composition of claim 1.

Claim 7

An article according to Claim 5 further characterized by the feature that said coating composition has been radiation cured.

Claim 8

A novel poly(fluorooxyalkylene)urethane acrylate or methacrylate characterized in that said acrylate or methacrylate has the general formula: wherein: Rf is a divalent poly(fluorooxyalkylene) group having a number average molecular weight of from about 500 to 20,000; A' is selected from the group consisting of and wherein: R is selected from the group consisting of hydrogen and methyl, a is an integer having a value of 2 to 6, and R' is selected from the group consisting of a divalent aliphatic or cycloaliphatic group having 2 to 14 carbon atoms and an aryl group having 6 to 14 carbon atoms; Y is selected from the group consisting of wherein: b is 2 to 12, R 2 is selected from the group consisting of hydrogen, a lower alkyl of about 1 to 4 carbon atoms, and (CH 2 )̵ c A', wherein c is 2 to 3, and wherein when R 2 is -(CH 2 )̵ c A 1 , b is 2 or 3; and Z is selected from the group consisting of CF 3 0-, CF 3 0CF(CF 3 )O-, -Y-A', and wherein Y and A' are defined as said Y and said A' hereinabove. -

Claim 9

A novel poly(fluorooxyalkylene)urethane acrylate or methacrylate characterized in that said acrylate or methacrylate has the general formula: wherein: Rf is a divalent poly(fluorooxyalkylene) group having a number average molecular weight of from about 500 to 20,000; A' is selected from the group consisting of and wherein: R is selected from the group consisting of hydrogen and methyl, a is an integer having a value of 2 to 6, and R' is selected from the group consisting of a divalent aliphatic or cycloaliphatic group having 2 to 14 carbon atoms and an aryl group having 6 to 14 carbon atoms; Y is selected from the group consisting of wherein: b is 2 to 12, R 2 is selected from the group consisting of hydrogen, a lower alkyl of about 1 to 4 carbon atoms, and (CH 2 )̵ c A', wherein c is 2 to 3, and wherein when R 2 is -(CH 2 )̵ c A 1 , b is 2 or 3; and Z is selected from the group consisting of CF 3 0-, CF 3 0CF(CF 3 )O-, -Y-A', and wherein Y and A' are defined as said Y and said A' hereinabove. -

Claim 10

An image transfer process for transferring an image from a release surface to a receiver surface of the type comprising the steps of (a) applying an image to a release coated surface of a first support base; (b) adhering an adhesive surface of an adhesive coated second support base over said image on said release coated surface of said first support base; ,(c) applying sufficient pressure to said second support base to effect intimate contact between said adhesive surface of said second support base and said image on said release coated surface of said first support base; (d) separating said image bearing first support base from said second support base, with said image being transferred to said adhesive layer of said second support base; characterized in that said release coating on said first support base comprises a layer of the coating composition of claim 1 which has been radiation cured; and further characterized by the feature that said process comprises a further step (e) releasably securing said adhesive layer of said second support base, now bearing said image, onto a different receiver surface by the application of pressure to provide said receiver surface with a protected image.

Claim 11

The process of Claim 8 further characterized by the feature that said image is applied to said release coated surface of said first support base by means selected from the group consisting of xerography, printing, silk screening, stenciling, electrography, electrophotography and the like.