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US4164458A
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Production of radiation crosslinked polymeric compositions using diacetylenes
Assignee: Honeywell International Inc
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Filing: 1977-03-07
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Granted: 1979-08-14
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Expires: 1997-03-07
Abstract
Abstract Crosslinked polymeric compositions, useful as electrical insulators, heat shrinkable packaging, and lightweight foam plastics, are described. The crosslinked polymeric compositions are produced by admixing a diacetylene monomer, oligomer, polymer or mixture thereof, wherein the monomer has the formula, RNHCO-O-CH2-C 3BOND C-C 3BOND C-CH2-O-OCNHR' in which R and R' are the same or different and are alkyl containing 1 to 20 carbon atoms, with a thermoplastic crosslinkable polymer and then subjecting the resulting mixture to actinic radiation.
Inventors
- 👤 Gordhanbhai N. Patel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:45
CPC Classifications
H; H10; H10P; H10P14/00; H10P14/60; H10P14/68; H10P14/683; C; C08; C08F; C08F255/00; C08F291/00; C08K; C08K5/00; C08K5/16; C08K5/205; H10P14/65; H10P14/6516; H10P14/6536; H10P14/6539
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
71 words
A method for producing a crosslinked polymeric composition which comprises the steps of admixing a diacetylene monomer, oligomer, polymer or mixture thereof, wherein the monomer has the formula, RNHCO--O--CH 2 --C.tbd.C--C.tbd.C--CH 2 --O--OCNHR', in which R and R' are the same or different and are alkyl containing 1 to 20 carbon atoms, with a thermoplastic crosslinkable polymer and then subjecting the resulting mixture to actinic radiation or high energy ionizing radiation.
Claim 2
Independent Claim
71 words
A method for producing a crosslinked polymeric composition which comprises the steps of admixing a diacetylene monomer, oligomer, polymer or mixture thereof, wherein the monomer has the formula, RNHCO--O--CH 2 --C.tbd.C--C.tbd.C--CH 2 --O--OCNHR', in which R and R' are the same or different and are alkyl containing 1 to 20 carbon atoms, with a thermoplastic crosslinkable polymer and then subjecting the resulting mixture to actinic radiation or high energy ionizing radiation.
Claim 3
Dependent Claim
13 words
The method of claim 1 wherein both R and R' are the same.
Claim 4
Dependent Claim
18 words
The method of claim 1 wherein R and R' are linear alkyl containing 1 to 12 carbon atoms.
Claim 5
Dependent Claim
12 words
The method of claim 1 wherein the diacetylene monomer is 2,4-hexadiyn-1,6-diol bis(n-butylurethane).
Claim 6
Dependent Claim
12 words
The method of claim 1 wherein the diacetylene monomer is 2,4-hexadiyn-1,6-diol bis(ethylurethane).
Claim 7
Dependent Claim
34 words
The method of claim 1 wherein the diacetylene monomer, oligomer, polymer or mixture thereof is admixed with the thermoplastic crosslinkable polymer in the molten state, and the resultant mixture is cooled prior to radiation.
Claim 8
Dependent Claim
32 words
The method of claim 6 wherein the resultant mixture is cooled until the diacetylene monomer, oligomer, polymer, or mixture thereof is at least about 50 percent by weight in the solid state.
Claim 9
Dependent Claim
18 words
The method of claim 1 wherein the thermoplastic crosslinkable polymer is a homopolymer or copolymer of a polyolefin.
Claim 10
Dependent Claim
10 words
The method of claim 8 wherein the polyolefin is polyethylene.
Claim 11
Dependent Claim
35 words
The method of claim 1 wherein the diacetylene monomer, oligomer, polymer or mixture thereof is admixed with the crosslinkable polymer in an amount of about 0.001 to 10 percent by weight of the crosslinkable polymer.
Claim 12
Dependent Claim
35 words
The method of claim 10 wherein the diacetylene monomer, oligomer, polymer or mixture thereof, is admixed with the crosslinkable polymer in an amount of about 1 to 3 percent by weight of the crosslinkable polymer.
Claim 13
Dependent Claim
14 words
The method of claim 1 wherein the high energy ionizing radiation is gamma radiation.
Claim 14
Dependent Claim
53 words
A crosslinked polymeric composition comprising an irradiated product of a thermoplastic crosslinkable polymer admixed with a diacetylene monomer, oligomer, polymer or mixture thereof, wherein the monomer has the formula RNHCO--O--CH 2 --C.tbd.C--C.tbd.C--CH 2 --O--OCNHR', in which R and R' are the same or different and are alkyl containing 1 to 20 carbon atoms.
Claim 15
Dependent Claim
53 words
A crosslinked polymeric composition comprising an irradiated product of a thermoplastic crosslinkable polymer admixed with a diacetylene monomer, oligomer, polymer or mixture thereof, wherein the monomer has the formula RNHCO--O--CH 2 --C.tbd.C--C.tbd.C--CH 2 --O--OCNHR', in which R and R' are the same or different and are alkyl containing 1 to 20 carbon atoms.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-08-13 | 1983-02-12 | 1983-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-08-13 | 1987-02-12 | 1987-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-08-13 | 1991-02-12 | 1991-08-14 | $7700.00 | Window Closed / Lapsed |