Radiation curable polyolefin pressure sensitive adhesive

Claim 2

An article comprising an ultraviolet radiation curable poly(α-olefin) adhesive composition coated on a substrate, said composition comprising: a) at least one polymer comprising the reaction product of from 85 to 100 mole percent C 6 to C 10 α-olefin and 15 to 0 mole percent of one or more polyene monomer; and b) an effective amount of an ultraviolet radiation activatable crosslinking agent.

Claim 3

The article according to claim 1 wherein said adhesive composition on a substrate has been cured by ultraviolet radiation.

Claim 4

The article according to claim 1 wherein said substrate is selected from the group consisting of polymer films, woven and non-woven fabrics, metals, paper, glass, and composite materials comprising laminates of at least two of said substrates.

Claim 5

The article according to claim 1 which further comprises a release liner.

Claim 6

The article according to claim 1 wherein said radiation curable poly (α-olefin) pressure-sensitive adhesive composition comprises: a) a crosslinkable polymer comprising random or block units with the formulae: ##STR4## where R 1 is selected from monovalent hydrocarbon groups containing 4 to 8 carbon atoms; R 2 is a monovalent hydrocarbon radical containing one or more ethylenically unsaturated groups selected from the groups consisting of: --CH.sub.2).sub.n R.sub.3, --Ar--R.sub.3, --CH.sub.2).sub.n Q--R.sub.3 n=an integer 0 to 14; R 3 is a C 2 to C 10 monovalent hydrocarbon group containing one or more ethylenically unsaturated groups; Ar is a divalent aromatic radical containing 1 or 2 aromatic rings with from 0-8 substituents selected from the group consisting of alkyl, aryl, cycloalkyl, alkoxy, and aryloxy containing from 1-12 carbon atoms; Q is a divalent radical selected from the group consisting of ##STR5## where R 4 and R 5 are the same or different C 1 to C1 0 monovalent hydrocarbon radicals selected from the group consisting of alkyl, cycloalkyl, alkaryl, aryl, alkoxy, aryloxy; x is the mole percent of one or more C 6 -C 10 α-olefin monomer(s) the total ranging from 85-100 mole percent; y is the mole percent of one or more polyene monomer(s) the total ranging from 0-15 mole percent; with the proviso that x+y=100 mole percent; b) an effective amount of one or more photoactive-crosslinking-agents sufficient to crosslink the pressure-sensitive adhesive composition upon irradiation from a source of article radiation.

Claim 7

The article according to claim 1 wherein said polymer in said radiation curable poly(α-olefin) pressure-sensitive adhesive composition is selected from the group consisting of a homopolymer, a copolymer, a terpolymer, and a tetrapolymer containing at least two polyene monomers.

Claim 8

The article according to claim 1 wherein the polyene monomers in said radiation curable pressure-sensitive adhesive composition are selected from the group consisting of aliphatic dienes, aliphatic trienes, aliphatic tetraenes, aromatic dienes, aromatic trienes, monocyclic dienes, bicyclic dienes, tricyclic dienes, tetracyclic dienes, monocyclic trienes bicyclic trienes, tricyclic trienes, and tetracyclic trienes.

Claim 9

The article according to claim 1 wherein said polymer in said radiation curable poly(α-olefin) pressure-sensitive adhesive composition comprises residual ethylenically unsaturated groups in pendant side chains.

Claim 10

The article according to claim 1 wherein said polymer in said radiation curable poly(α-olefin) pressure-sensitive adhesive composition comprises residual ethylenically unsaturated groups in the backbone.

Claim 11

The article according to claim 1 wherein said polymer of said radiation curable poly(α-olefin) pressure-sensitive adhesive composition has a gel content in the range of 2 to 95 weight percent.

Claim 12

The article according to claim 1 wherein said radiation activatable crosslinking agent in said radiation curable poly(α-olefin) pressure-sensitive adhesive composition is selected from the group consisting of aldehydes, ketones, quinones, thioxanthones, and s-traizines.

Claim 13

The article according to claim 1 wherein said radiation curable poly(α-olefin) pressure-sensitive adhesive composition further comprises a tackifying resin in an amount in the range of more than 0 to 150 parts per hundred parts of the adhesive composition.

Claim 14

The article according to claim 1 wherein said radiation curable poly(α-olefin) pressure-sensitive adhesive composition further comprises a chemically effective amount of at least one additive selected from the group consisting of pigments, dyes, fillers, plasticizers, stabilizers, antioxidants, and processing oils.

Claim 15

The article according to claim 1 further comprising a primary layer for said adhesive.

Claim 16

The article according to claim 14 wherein said primer layer comprises a triblock copolymer of styrene-ethylene/butylene-styrene grafted with maleic anhydride optionally in combination with amorphous polypropylene.

Claim 17

The article according to claim 1 wherein said adhesive composition on a substrate has been cured.

Claim 18

The article according to claim 16 which is a pressure-sensitive adhesive tape.

Claim 19

The article according to claim 16 which is a transfer adhesive film.

Claim 20

The article according to claim 1 wherein said substrate further comprises a release layer on said substrate to provide an adhesive transfer film.

Claim 21

The cured article according to claim 19.

Claim 22

A laminate structure comprising at least two substrates, and coated therebetween a layer of ultraviolet radiation curable poly(α-olefin) pressuresensitive adhesive composition comprising: a) at least one polymer comprising the reaction product of from 85 to 100 mole percent C 6 to C 10 α-olefin and 15 to 0 mole percent of one or more polyene monomer; b) an effective amount of an ultraviolet radiation activatable crosslinking agent, at least one of said substrates being capable of transmitting actinic or electron beam radiation.

Claim 23

A laminate structure comprising at least two substrates, and coated therebetween a layer of ultraviolet radiation curable poly(α-olefin) pressuresensitive adhesive composition comprising: a) at least one polymer comprising the reaction product of from 85 to 100 mole percent C 6 to C 10 α-olefin and 15 to 0 mole percent of one or more polyene monomer; b) an effective amount of an ultraviolet radiation activatable crosslinking agent, at least one of said substrates being capable of transmitting actinic or electron beam radiation.

Claim 24

The laminated structure according to claim 21 wherein said adhesive layer has been cured.