US4959178A — Actinic radiation-curable conductive polymer thic…

Claim 1

Independent Claim 102 words

An actinic radiation curable polymer thick film composition comprising by weight: (a) about 10 to about 20 parts of at least one mono-functional unsaturated monomer capable of being polymerized by actinic radiation; (b) about 2.5 to about 8 parts of at least one thermoplastic polymer having a glass transition value of above about 100° F. and not capable of being substantially cross-linked with polymerized monomer (a) and said polymer (b) is dissolved in monomer (a); (c) about 68 to about 85 parts of conductive metal particles; and (d) about 0.1 to about 5 parts of at least one actinic radiation polymerization initiator.

Claim 2

Dependent Claim 102 words

An actinic radiation curable polymer thick film composition comprising by weight: (a) about 10 to about 20 parts of at least one mono-functional unsaturated monomer capable of being polymerized by actinic radiation; (b) about 2.5 to about 8 parts of at least one thermoplastic polymer having a glass transition value of above about 100° F. and not capable of being substantially cross-linked with polymerized monomer (a) and said polymer (b) is dissolved in monomer (a); (c) about 68 to about 85 parts of conductive metal particles; and (d) about 0.1 to about 5 parts of at least one actinic radiation polymerization initiator.

Claim 3

Dependent Claim 11 words

The composition of claim 1 wherein said monomer (a) is N-vinyl-2-pyrrolidone.

Claim 4

Dependent Claim 16 words

The composition of claim 1 wherein said thermoplastic polymer (b) is a polyvinylidene chloride lacrylonitrile copolymer.

Claim 5

Dependent Claim 14 words

The composition of claim 1 wherein said thermoplastic polymer (b) is a polyester polymer.

Claim 6

Dependent Claim 13 words

The composition of claim 1 wherein said metal particles (c) are silver flakes.

Claim 7

Dependent Claim 14 words

The composition of claim 1 wherein said polymerization initiator (d) is a UV photoinitiator.

Claim 8

Dependent Claim 47 words

The composition of claim 1 wherein (a) is present in about 12 to about 18 parts; (b) is present in about 3 to about 6 parts; (c) is present in about 70 to about 82 parts; and (d) is present in about 0.3 to about 2 parts.

Claim 9

Dependent Claim 79 words

An actinic radiation curable composition comprising by weight: (a) about 12 to about 18 parts of N-vinyl-2-pyrrolidone; (b) about 3 to about 6 parts of at least one thermoplastic polymer having a glass transition value of above about 100° F. and not capable of substantially cross-linking with polymerized N-vinyl-2-pyrrolidone and said polymer (b) is dissolved in N-vinyl-2-pyrrolidone (c) about 70 to about 82 parts of silver particles; and (d) about 0.3 to about 2 parts of a UV photoinitiator.

Claim 10

Dependent Claim 79 words

An actinic radiation curable composition comprising by weight: (a) about 12 to about 18 parts of N-vinyl-2-pyrrolidone; (b) about 3 to about 6 parts of at least one thermoplastic polymer having a glass transition value of above about 100° F. and not capable of substantially cross-linking with polymerized N-vinyl-2-pyrrolidone and said polymer (b) is dissolved in N-vinyl-2-pyrrolidone (c) about 70 to about 82 parts of silver particles; and (d) about 0.3 to about 2 parts of a UV photoinitiator.

Claim 11

Dependent Claim 16 words

The composition of claim 8 wherein said thermoplastic polymer (b) is a polyvinylidene chloride lacrylonitrile copolymer.

Claim 12

Dependent Claim 14 words

The composition of claim 8 wherein said thermoplastic polymer (b) is a polyester polymer.

Claim 13

Independent Claim 140 words

A method of preparing a polymer thick film on a substrate comprising the steps of: (1) providing a polymer thick film composition comprising: (a) about 10 to about 20 parts of at least one mono-functional unsaturated monomer capable of being polymerized by actinic radiation; (b) about 2.5 to about 8 parts of at least one thermoplastic polymer having a glass transition value of above about 100° F. and not capable of being substantially cross-linked with polymerized monomer (a) and said polymer (b) is dissolved in monomer (a); (c) about 68 to about 85 parts of conductive metal particles; and (d) about 0.1 to about 5 parts of at least one actinic radiation polymerization initiator. (2) applying said composition to a substrate, and (3) curing said composition onto said substrate by exposing said mixture to a sufficient amount of actinic radiation.

Claim 14

Independent Claim 140 words

A method of preparing a polymer thick film on a substrate comprising the steps of: (1) providing a polymer thick film composition comprising: (a) about 10 to about 20 parts of at least one mono-functional unsaturated monomer capable of being polymerized by actinic radiation; (b) about 2.5 to about 8 parts of at least one thermoplastic polymer having a glass transition value of above about 100° F. and not capable of being substantially cross-linked with polymerized monomer (a) and said polymer (b) is dissolved in monomer (a); (c) about 68 to about 85 parts of conductive metal particles; and (d) about 0.1 to about 5 parts of at least one actinic radiation polymerization initiator. (2) applying said composition to a substrate, and (3) curing said composition onto said substrate by exposing said mixture to a sufficient amount of actinic radiation.

Claim 15

Dependent Claim 14 words

The method of claim 11 wherein said applying step (2) comprises a screening operation.

Claim 16

Dependent Claim 13 words

The method of claim 11 wherein said actinic radiation is UV light energy.

Claim 17

Dependent Claim 10 words

The method of claim 11 wherein said substrate is rigid.

Claim 18

Dependent Claim 10 words

The method of claim 11 wherein said substrate is flexible.

Claim 19

Dependent Claim 76 words

A cured polymer thick film composition consisting essentially of by weight: (a) about 10 to about 20 parts of at least one polymerized mono-functional monomer, said monomer polymerized by means of actinic radiation; (b) about 2.5 to about 8 parts of at least one thermoplastic polymer having a glass transition value of about 100° F.; (c) about 68 to about 85 parts of conductive metal particles; and wherein substantially no cross-linking occurs between (a) and (b).

Claim 20

Dependent Claim 76 words

A cured polymer thick film composition consisting essentially of by weight: (a) about 10 to about 20 parts of at least one polymerized mono-functional monomer, said monomer polymerized by means of actinic radiation; (b) about 2.5 to about 8 parts of at least one thermoplastic polymer having a glass transition value of about 100° F.; (c) about 68 to about 85 parts of conductive metal particles; and wherein substantially no cross-linking occurs between (a) and (b).

Claim 21

Dependent Claim 12 words

The cured composition of claim 16 wherein said monomer (a) is N-vinyl-2-pyrrolidone.

Claim 22

Dependent Claim 17 words

The cured composition of claim 16 wherein said thermoplastic polymer (b) is a polyvinylidene chloride lacrylonitrile copolymer.

Claim 23

Dependent Claim 15 words

The cured composition of claim 16 wherein said thermoplastic polymer (b) is a polyester polymer.

Claim 24

Dependent Claim 14 words

The cured composition of claim 16 wherein said metal particles (c) are silver flakes.

Claim 25

Dependent Claim 37 words

The cured composition of claim 16 wherein (a) is present in about 12 to about 18 parts; (b) is present in about 3 to about 6 parts; (c) is present in about 70 to about 82 parts.

Claim 26

Dependent Claim 80 words

A substrate having a conductive polymer thick film coating thereon which consists essentially of by weight: (a) about 10 to about 20 parts of a polymerized mono-functional monomer, said monomer polymerized by means of actinic radiation; (b) about 2.5 to about 8 parts of at least one thermoplastic polymer having a glass transition value of above about 100° F.; (c) about 68 to about 85 parts of conductive metal particles; and wherein substantially no cross-linking occurs between (a) and (b).

Claim 27

Dependent Claim 80 words

A substrate having a conductive polymer thick film coating thereon which consists essentially of by weight: (a) about 10 to about 20 parts of a polymerized mono-functional monomer, said monomer polymerized by means of actinic radiation; (b) about 2.5 to about 8 parts of at least one thermoplastic polymer having a glass transition value of above about 100° F.; (c) about 68 to about 85 parts of conductive metal particles; and wherein substantially no cross-linking occurs between (a) and (b).

Claim 28

Dependent Claim 11 words

The coated substrate of claim 22 wherein said substrate is flexible.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1993-09-24	1994-03-26	1994-09-25	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1997-09-24	1998-03-26	1998-09-25	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2001-09-24	2002-03-26	2002-09-25	$7700.00	Window Closed / Lapsed

Actinic radiation-curable conductive polymer thick film compositions and their use thereof

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