US5140075A
Expired / Lapsed
US
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Epoxy-modified encapsulation composition
Assignee: Uniroyal Chemical Co Inc
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Filing: 1990-01-18
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Granted: 1992-08-18
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Expires: 2010-01-18
Abstract
Abstract Epoxy-grafted, low molecular weight amorphous polymer compositions are employed in pourable, liquid telecommunication cable encapsulation compositions. Also disclosed is a method for encapsulating telecommunication cables as well as cables encapsulated with such an epoxy-grafted liquid encapsulant.
Inventors
- 👤 Richard F. Tomko
- 👤 Revati Ranganathan
- 👤 William D. Sigworth
- 👤 Dong-Hak Bae
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:20
CPC Classifications
C; C08; C08F; C08F255/00; C08F279/00; C08F279/02
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
176 words
A pourable liquid composition comprising: (A) a liquid graft polymer having a Brookfield viscosity of less than about 1,000,000 centipoise at 25° C., which graft polymer either possesses no melting transition peak or possess a melting transition peak having a maximum value below 25° C. as measured by Differential Scanning Calorimetry: said graft polymer being comprised of: a polymeric backbone selected from the group consisting of polyalphaolefin, ethylene/alphaolefin copolymer, ethylene/alphaolefin/nonconjugated polyene terpolymer, polyisoprene, polybutadiene, and alphaolefin/polyene copolymer; said polymeric backbone having grafted thereto a sufficient amount of at least one compound selected from the formulae: ##STR6## wherein R" is a C 2 -C 16 hydrocarbon radical containing an ethylenically unsaturated bond or a C 3 -C 12 radical containing one or more carbonyl groups and an ethylenically unsaturated double bond: and R' is hydrogen or C 1 -C4 alkyl: such that said graft polymer is rendered crosslinkable; said graft polymer having a number average molecular weight of between about 500 and about 20,000; and (B) a sufficient amount of a suitable curative to cure the composition.
Claim 2
Dependent Claim
176 words
A pourable liquid composition comprising: (A) a liquid graft polymer having a Brookfield viscosity of less than about 1,000,000 centipoise at 25° C., which graft polymer either possesses no melting transition peak or possess a melting transition peak having a maximum value below 25° C. as measured by Differential Scanning Calorimetry: said graft polymer being comprised of: a polymeric backbone selected from the group consisting of polyalphaolefin, ethylene/alphaolefin copolymer, ethylene/alphaolefin/nonconjugated polyene terpolymer, polyisoprene, polybutadiene, and alphaolefin/polyene copolymer; said polymeric backbone having grafted thereto a sufficient amount of at least one compound selected from the formulae: ##STR6## wherein R" is a C 2 -C 16 hydrocarbon radical containing an ethylenically unsaturated bond or a C 3 -C 12 radical containing one or more carbonyl groups and an ethylenically unsaturated double bond: and R' is hydrogen or C 1 -C4 alkyl: such that said graft polymer is rendered crosslinkable; said graft polymer having a number average molecular weight of between about 500 and about 20,000; and (B) a sufficient amount of a suitable curative to cure the composition.
Claim 3
Dependent Claim
26 words
The composition of claim 1 wherein said graft polymer has a polymeric backbone selected from the group consisting of ethylene/alphaolefin copolymer, polyalphaolefin and ethylene/alphaolefin/nonconjugated polyene terpolymer.
Claim 4
Dependent Claim
25 words
The composition of claim 1 wherein said graft polymer has a polymeric backbone selected from the group consisting of ethylene/propylene copolymer, and ethylene/propylene/nonconjugated diene terpolymer.
Claim 5
Dependent Claim
22 words
The composition of claim 3 wherein said graft polymer has a number average molecular weight of between about 750 and about 10,000.
Claim 6
Dependent Claim
22 words
The composition of claim 4 wherein said graft polymer has a number average molecular weight of between about 1,000 and about 4,500.
Claim 7
Dependent Claim
27 words
The composition of claim 3 wherein R" is a C 2 -C12 hydrocarbon radical containing an ethylenically unsaturated bond or is an acrylate or a methacrylate radical.
Claim 8
Dependent Claim
15 words
The composition of claim 3 wherein said polymeric backbone has grafted thereto allyl glycidyl ether.
Claim 9
Dependent Claim
22 words
The composition of claim 1 wherein said graft polymer has a Brookfield viscosity of less than about 500,000 centipoise at 25° C.
Claim 10
Dependent Claim
159 words
A liquid graft polymer having a Brookfield viscosity of less than about 1,000,000 centipoise at 25° C., said graft polymer either possessing no melting transition peak or possessing a melting transition peak having a maximum value below 25° C. as measured by Differential Scanning Calorimetry; said graft polymer being comprised of: a polymeric backbone polymer selected from the group consisting of polyalphaolefin, ethylene/alphaolefin copolymer, ethylene/alphaolefin/nonconjugated polyene terpolymer, polyisoprene, polybutadiene, and alphaolefin/polyene copolymer: said polymeric backbone having grafted thereto a sufficient amount of at least one compound selected from the formulae: ##STR7## wherein R" is a C 2 -C 16 hydrocarbon radical containing an ethylenically unsaturated bond or a C 3 -C 12 radical containing one or more carbonyl groups and an ethylenically unsaturated double bond: and R' is hydrogen or C 1 -C 4 alkyl; such that said graft polymer is rendered crosslinkable: said graft polymer having a number average molecular weight of between about 500 and about 4,500.
Claim 11
Dependent Claim
159 words
A liquid graft polymer having a Brookfield viscosity of less than about 1,000,000 centipoise at 25° C., said graft polymer either possessing no melting transition peak or possessing a melting transition peak having a maximum value below 25° C. as measured by Differential Scanning Calorimetry; said graft polymer being comprised of: a polymeric backbone polymer selected from the group consisting of polyalphaolefin, ethylene/alphaolefin copolymer, ethylene/alphaolefin/nonconjugated polyene terpolymer, polyisoprene, polybutadiene, and alphaolefin/polyene copolymer: said polymeric backbone having grafted thereto a sufficient amount of at least one compound selected from the formulae: ##STR7## wherein R" is a C 2 -C 16 hydrocarbon radical containing an ethylenically unsaturated bond or a C 3 -C 12 radical containing one or more carbonyl groups and an ethylenically unsaturated double bond: and R' is hydrogen or C 1 -C 4 alkyl; such that said graft polymer is rendered crosslinkable: said graft polymer having a number average molecular weight of between about 500 and about 4,500.
Claim 12
Dependent Claim
26 words
The polymer of claim 9 wherein said graft polymer has a polymeric backbone selected from the group consisting of ethylene/alphaolefin copolymer, polyalphaolefin and ethylene/alphaolefin/nonconjugated polyene terpolymer.
Claim 13
Dependent Claim
25 words
The polymer of claim 10 wherein said graft polymer has a polymeric backbone selected from the group consisting of ethylene/propylene copolymer and ethylene/propylene/nonconjugated diene terpolymer.
Claim 14
Dependent Claim
27 words
The polymer of claim 11 wherein R" is a C 2 -C 12 hydrocarbon radical containing an ethylenically unsaturated bond or is an acrylate or methacrylate radical.
Claim 15
Dependent Claim
15 words
The polymer of claim 12 wherein said polymeric backbone has grafted thereto allyl glycidyl ether.
Claim 16
Dependent Claim
22 words
A polymer of claim 9 wherein said graft polymer has a Brookfield viscosity of less than about 500,000 centipoise at 25° C.
Claim 17
Dependent Claim
39 words
The polymer of claim 9 wherein said graft polymer has a polymeric backbone selected from the group consisting of ethylene/alphaolefin copolymer and polyalphaolefin; and wherein R" is a C 2 -C 16 hydrocarbon radical containing an ethylenically unsaturated bond.
References Cited (Backward Citations)
US4222801A
Cited
US4217028A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-08-18 | 1996-02-17 | 1996-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-08-18 | 2000-02-17 | 2000-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-08-18 | 2004-02-17 | 2004-08-18 | $7700.00 | Window Closed / Lapsed |