US4495271A — Radiation polymerizable mixture and copying mater…

Claim 1

Independent Claim 160 words

A radiation-polymerizable mixture consisting essentially of (a) from about 20 to about 80 weight percent of a binder which is insoluble in water, but soluble or at least swellable in aqueous alkaline solutions, and which consists essentially of a terpolymer consisting essentially of monomers selected from the group consisting of (i) methacrylic acid,(ii) alkyl methacrylates having 4 to 15 carbons in the alkyl group or methyl methacrylate, and (iii) styrene or acrylonitrile; (b) from about 0.1 to about 20 weight percent of a radiation-activatable polymerization initiator; and (c) from about 20 to about 80 weight percent of a polymerizable acrylate or methacrylate of a dihydric to tetrahydric alcohol, said polymerizable acrylate or methacrylate comprising from 10 to about 100 weight percent, relative to the total amount of polymerizable compound, of a polypropylene glycol diacrylate or dimethacrylate corresponding to the formula ##STR7## wherein R represents a hydrogen atom or a methyl group and n represents a number from 2 to 13.

Claim 2

Dependent Claim 160 words

A radiation-polymerizable mixture consisting essentially of (a) from about 20 to about 80 weight percent of a binder which is insoluble in water, but soluble or at least swellable in aqueous alkaline solutions, and which consists essentially of a terpolymer consisting essentially of monomers selected from the group consisting of (i) methacrylic acid,(ii) alkyl methacrylates having 4 to 15 carbons in the alkyl group or methyl methacrylate, and (iii) styrene or acrylonitrile; (b) from about 0.1 to about 20 weight percent of a radiation-activatable polymerization initiator; and (c) from about 20 to about 80 weight percent of a polymerizable acrylate or methacrylate of a dihydric to tetrahydric alcohol, said polymerizable acrylate or methacrylate comprising from 10 to about 100 weight percent, relative to the total amount of polymerizable compound, of a polypropylene glycol diacrylate or dimethacrylate corresponding to the formula ##STR7## wherein R represents a hydrogen atom or a methyl group and n represents a number from 2 to 13.

Claim 3

Dependent Claim 13 words

A radiation-polymerizable mixture according to claim 1 wherein R represents a methyl group.

Claim 4

Dependent Claim 13 words

A radiation-polymerizable mixture according to claim 1 wherein R represents a hydrogen atom.

Claim 5

Dependent Claim 16 words

A radiation-polymerizable mixture according to claim 1 wherein n represents a number from 4 to 10.

Claim 6

Dependent Claim 37 words

A radiation-polymerizable mixture according to claim 1 further comprising at least one polymerizable compound selected from the group consisting of acrylic acid esters or methacrylic acid esters of polyhydric alcohols having from 2 to 4 hydroxyl groups.

Claim 7

Dependent Claim 45 words

A radiation-polymerizable mixture according to claim 1, consisting essentially of from about 30 to about 70 weight percent of said binder, from about 0.1 to about 20 weight percent of said radiation-activatable polymerization initiator and from about 30 to about 70 weight percent polymerizable compounds.

Claim 8

Dependent Claim 19 words

A radiation-polymerizable mixture according to claim 1 wherein said dihydric to tetrahydric alcohol contains urethane groups in the molecule.

Claim 9

Dependent Claim 32 words

A radiation-polymerizable mixture according to claim 1 wherein said polymerization initiator is selected from the group consisting of benzoin, benzoin ethers, polynuclear quinones, acridine derivatives, phenazine derivatives, quinoxaline derivatives, and quinazoline derivatives.

Claim 10

Dependent Claim 164 words

A radiation-polymerizable mixture according to claim 7, wherein said polymerizable acrylate or methacrylate corresponds to the formula ##STR8## wherein X represents a hydrocarbon radical, preferably a saturated aliphatic or cycloaliphatic radical, having 2 to 20 carbon atoms, Y represents one of the groups: (--C.sub.p H.sub.2p --S).sub.m-1 --C.sub.p H.sub.2p --O--; (--C.sub.p H.sub.2p --O).sub.m --; --C.sub.r H.sub.2r-2 --O--; --C.sub.s H.sub.2s --Z(--CO--C.sub.q H.sub.2q --O).sub.m --; (--C.sub.q H.sub.2q --O--CO--Q--COO).sub.m --C.sub.q H.sub.2q --O--; and ##STR9## R and R' individually represent hydrogen atoms or methyl groups, R" represents O, S, CR 2 or SO 2 ; Q represents a phenyl group or one of the groups C q H 2q and C q H 2q-2 ; z represents 0 or NR, n represents a number from 0 to 20; m represents a number from 1 to 40, p represents a number from 2 to 20; q represents a number from 2 to 10; r represents a number from 4 to 20, and s represents a number from 2 to 10.

Claim 11

Dependent Claim 24 words

A radiation-polymerizable mixture according to claim 9, wherein R and R' are methyl groups and the value of n ranges from 0 to 20.

Claim 12

Dependent Claim 29 words

A radiation-polymerizable mixture according to claim 9, wherein Y represents the group (--C p H 2p --O--) m -- and the value of p ranges from 2 to 10.

Claim 13

Dependent Claim 148 words

A copying material comprising a support and a radiation-polymerizable layer consisting essentially of: (a) from about 20 to about 80 weight percent of a binder which is insoluble in water, but soluble or at least swellable in aqueous alkaline solutions, and which consists essentially of a terpolymer consisting essentially of monomers selected from the group consisting of (i) methacrylic acid, (ii) alkyl methacrylates having 4 to 15 carbons in the alkyl group or methyl methacrylate, and (iii) styrene or acrylonitrile; (b) from about 0.1 to about 20 weight percent of a radiation-activatable polymerization initiator; and (c) from about 20 to about 80 weight percent of a polymerizable acrylate or methacrylate of a dihydric to tetrahydric alcohol, said polymerizable acrylate or methacrylate comprising from 10 to 100 weight percent, relative to the total amount of polymerizable compound, of a polypropylene glycol diacrylate or dimethacrylate corresponding to the formula ##STR10##

Claim 14

Dependent Claim 148 words

A copying material comprising a support and a radiation-polymerizable layer consisting essentially of: (a) from about 20 to about 80 weight percent of a binder which is insoluble in water, but soluble or at least swellable in aqueous alkaline solutions, and which consists essentially of a terpolymer consisting essentially of monomers selected from the group consisting of (i) methacrylic acid, (ii) alkyl methacrylates having 4 to 15 carbons in the alkyl group or methyl methacrylate, and (iii) styrene or acrylonitrile; (b) from about 0.1 to about 20 weight percent of a radiation-activatable polymerization initiator; and (c) from about 20 to about 80 weight percent of a polymerizable acrylate or methacrylate of a dihydric to tetrahydric alcohol, said polymerizable acrylate or methacrylate comprising from 10 to 100 weight percent, relative to the total amount of polymerizable compound, of a polypropylene glycol diacrylate or dimethacrylate corresponding to the formula ##STR10##

Claim 15

Dependent Claim 18 words

wherein R represents a hydrogen atom or methyl group and n represents a number from 2 to 13.

Claim 16

Dependent Claim 18 words

wherein R represents a hydrogen atom or methyl group and n represents a number from 2 to 13.

Claim 17

Dependent Claim 23 words

A copying material according to claim 12 wherein said polymerizable layer has a thickness lying in the range from 0.5 to 150 μm.

Claim 18

Dependent Claim 44 words

A copying material according to claim 12 wherein said support is selected from the group consisting of copper, steel, chromium-plated copper, chromium-plated steel, zinc, nickel, aluminum, aluminum alloys, silicon dioxide, doped oxide layers, polyethylene terephthalate films, cellulose acetate films, nylon gauze and nickel screens.

Claim 19

Dependent Claim 13 words

A copying material according to claim 12 wherein R represents a methyl group.

Claim 20

Dependent Claim 16 words

A copying material according to claim 12 wherein n represents a number from 4 to 10.

Claim 21

Dependent Claim 19 words

A copying material according to claim 12 wherein said dihydric to tetrahydric alcohol contains urethane groups in the molecule.

Claim 22

Dependent Claim 162 words

A copying material according to claim 17, wherein said polymerizable acrylate or methacrylate corresponds to the formula ##STR11## wherein X represents a hydrocarbon radical, preferably a saturated aliphatic or cycloaliphatic radical, having 2 to 20 carbon atoms, Y represents one of the groups: (--C.sub.p H.sub.2p --S).sub.m-1 --C.sub.p H.sub.2p --O--; (--C.sub.p H.sub.2p --O).sub.m --; --C.sub.r H.sub.2r-2 --O--; --C.sub.s H.sub.2s --Z(--CO--C.sub.q H.sub.2q --O).sub.m --; (--C.sub.q H.sub.2q --O--CO--Q--COO).sub.m --C.sub.q H.sub.2q --O--; and ##STR12## R and R' individually represent hydrogen atoms or methyl groups, R" represents O,S,CR 2 or SO 2 ; Q represents a phenyl group or one of the groups C q H 2q and C q H 2q-2 ; Z represents O or NR, n represents a number from 0 to 20; m represents a number from 1 to 40, p represents a number from 2 to 20; q represents a number from 2 to 10; r represents a number from 4 to 20, and s represents a number from 2 to 10.

Claim 23

Dependent Claim 24 words

A copying material according to claim 18, wherein R and R' are methyl groups and the value of n ranges from 0 to 20.

Claim 24

Dependent Claim 28 words

A copying material according to claim 18, wherein Y represents the group (--C p H 2p --O) m --and the value of p ranges from 2 to 10.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1988-01-22	1988-07-23	1989-01-22	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1992-01-22	1992-07-23	1993-01-22	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1996-01-22	1996-07-23	1997-01-22	$7700.00	Window Closed / Lapsed

Radiation polymerizable mixture and copying material produced therefrom

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