US3985716A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Esters of sulfonyl dibenzoic acid
Assignee: DELTA SURPRENANT WIRE AND CABLE Inc
•
Filing: 1974-11-29
•
Granted: 1976-10-12
•
Expires: 1994-11-29
Abstract
Abstract Esters of sulfonyl dibenzoic acid of the formula IN WHICH R1 and R2 are selected from the group consisting of allyl and methallyl. The compounds are useful as additives to accelerate the crosslinking of polymeric materials.
Inventors
- 👤 Kewal Singh Dhami
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:23
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/41
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
97 words
An irradiation corsslinkable composition comprising a high temperature processing fluorocarbon polymer selected from the group consisting of polymers and copolymers of ethylene-tetrafluoroethylene, ethylene-chlorotrifluoroethylene, vinylidene fluoride, tetrafluoroethylene-vinylidene fluroide, tetrafluoroethylene-hexafluoropropylene, vinylidene fluoride-hexafluoropropylene-tetrafluoroethylene and blends thereof and as a crosslinking agent a compound of the formula: ##SPC3## in which R 1 and R 2 are independently selected from the group consisting of allyl and methallyl, the crosslinking agent being present in an amount of from 0.5 to 20 parts by weight per hundred parts of the fluorocarbon polymer sufficient to plasticize the polymer and to impart deformation resistance upon crosslinking.
Claim 2
Dependent Claim
97 words
An irradiation corsslinkable composition comprising a high temperature processing fluorocarbon polymer selected from the group consisting of polymers and copolymers of ethylene-tetrafluoroethylene, ethylene-chlorotrifluoroethylene, vinylidene fluoride, tetrafluoroethylene-vinylidene fluroide, tetrafluoroethylene-hexafluoropropylene, vinylidene fluoride-hexafluoropropylene-tetrafluoroethylene and blends thereof and as a crosslinking agent a compound of the formula: ##SPC3## in which R 1 and R 2 are independently selected from the group consisting of allyl and methallyl, the crosslinking agent being present in an amount of from 0.5 to 20 parts by weight per hundred parts of the fluorocarbon polymer sufficient to plasticize the polymer and to impart deformation resistance upon crosslinking.
Claim 3
Dependent Claim
15 words
The polymeric composition of claim 1 in which R 1 and R 2 are allyl.
Claim 4
Dependent Claim
15 words
The polmyeric composition of claim 1 in which R 1 and R 2 are methallyl.
Claim 5
Dependent Claim
27 words
The polymeric composition of claim 1 in which the fluorocarbon polymer is selected from the group consisting of polymers and copolymers of ethylene-tetrafluoroethylene, ethylene-chlorotrifluoroethylene and vinylidene fluoride.
Claim 6
Dependent Claim
40 words
A polymeric composition containing in combination with the compound of claim 1 an additional polyfunctional crosslinking agent selected from the group consisting of the diallylic and dimethyllylic esters of phenyl indan, diallyl brassylate, triallyl trimesate, triallyl trimellitate and triallyl isocyanurate.
References Cited (Backward Citations)
US2427640A
Cited
US2643954A
Cited
US2614120A
Cited
DE1100283B
Cited
US2895842A
Cited
US3178385A
Cited
US3069404A
Cited
US3579475A
Cited
US3718558A
Cited
US3738923A
Cited
US3755236A
Cited
US3840619A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-10-12 | 1980-04-12 | 1980-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-12 | 1984-04-12 | 1984-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-12 | 1988-04-12 | 1988-10-12 | $7700.00 | Window Closed / Lapsed |