US3870768A
Expired / Lapsed
US
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Unsaturated amides of oxybis(benzenesulfonic acid) and their use as cross-linking agents
Assignee: Olin Corp
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Filing: 1972-10-27
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Granted: 1975-03-11
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Expires: 1992-10-27
Abstract
Abstract Unsaturated amides of oxybis(benzenesulfonic acid), particularly the mono, di, tri and tetraallyl or methallyl amides, are useful as cross-linking agents for polymeric materials, or as monomers or comonomers in producing allylic-type resins. Such unsaturated amides may be represented by the formula: WHEREIN R1 is a C2-C12 alkenyl radical wherein the terminal carbon atom has two hydrogen atoms and is bonded to the penultimate carbon atom by means of a double bond; and R2 is a R1 radical, a C1-C6 alkyl radical, a phenyl radical or hydrogen.
Inventors
- 👤 John C Blackwood
- 👤 Edwin O Hook
- 👤 Walter Beck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:52
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/43; C08F; C08F291/00
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
25 words
A PROCESS OF PREPARING A CROSS-LINKED POLYMER, WHICH PROCESS COMPRISES: INCORPORATING AN UNSATURATED OXYBIS(BENZENESULFONAMIDE) IN A POLYMER SUBJECT TO CROSS-LINKING, THE SULFONAMIDE HAVING THE FORMULA:
Claim 2
Dependent Claim
25 words
A PROCESS OF PREPARING A CROSS-LINKED POLYMER, WHICH PROCESS COMPRISES: INCORPORATING AN UNSATURATED OXYBIS(BENZENESULFONAMIDE) IN A POLYMER SUBJECT TO CROSS-LINKING, THE SULFONAMIDE HAVING THE FORMULA:
Claim 3
Dependent Claim
25 words
A process of preparing a cross-linked polymer, which process comprises: incorporating an unsaturated oxybis(benzenesulfonamide) in a polymer subject to cross-linking, the sulfonamide having the formula:
Claim 4
Dependent Claim
25 words
A process of preparing a cross-linked polymer, which process comprises: incorporating an unsaturated oxybis(benzenesulfonamide) in a polymer subject to cross-linking, the sulfonamide having the formula:
Claim 5
Dependent Claim
36 words
The process of claim 1 which includes cross-linking the polymer by exposing the polymer to ionizing radiation in an amount from one to twenty megarads at a dosage rate of at least 0.1 megarads per hour.
Claim 6
Dependent Claim
25 words
The process of claim 1 which includes cross-linking the polymer by exposing the polymer to ionizing radiation in an amount from one to five megarads.
Claim 7
Dependent Claim
38 words
The process of claim 1 which includes cross-linking the polymer by incorporating into the polymer a peroxide or azonitrile free-radical initiator, and, thereafter, heating the polymer to effect the cross-linking by such initiatoRs of the unsaturated oxybis(benzenesulfonyl) polymer.
Claim 8
Dependent Claim
40 words
The process of claim 1 wherein the polymer is selected from the group consisting of polyvinyl chloride, nylon, polypropylene, polyethylene, ethylene-propylene rubber, ethylene-vinyl acetate copolymer, polystyrene, ethylene-ethyl acrylate copolymer, polyethyl acrylate, polyvinylidene fluoride, alkyd polyester resins and chlorinated polyethylene elastomer.
Claim 9
Dependent Claim
22 words
The process of claim 1 wherein R1 is selected from the group consisting of a vinyl radical, allyl radical, or methallyl radical.
Claim 10
Dependent Claim
13 words
The process of claim 1 wherein the oxybis(benzenesulfonamide) compound is N,N,N'', N-Tetraallyl oxybis)benzenesulfonamide).
Claim 11
Dependent Claim
12 words
The process of claim 1 wherein the oxybis(benzenesulfonamide) compound is N,N''-Diallyl oxybis(benzenesulfonamide).
Claim 12
Dependent Claim
12 words
The process of claim 1 wherein the oxybis(benzenesulfonamide) compound is Tetramethallyl oxybis(benzenesulfonamide).
Claim 13
Dependent Claim
12 words
The process of claim 1 wherein the oxybis(benzenesulfonamide) compound is Dimethallyl oxybis(benzenesulfonamide).
Claim 14
Dependent Claim
10 words
The cross-linked polymer produced by the process of claim 1.
Claim 15
Dependent Claim
34 words
The process of preparing a cross-linked polymer, which process comprises: incorporating from about 0.1 to 30% by weight of a tetraallyl oxybis(benzenesulfonamide) compound into a polymer subject to cross-linking; and, thereafter, cross-linking the polymer.
Claim 16
Dependent Claim
34 words
The process of preparing a cross-linked polymer, which process comprises: incorporating from about 0.1 to 30% by weight of a tetraallyl oxybis(benzenesulfonamide) compound into a polymer subject to cross-linking; and, thereafter, cross-linking the polymer.
Claim 17
Dependent Claim
19 words
The process of claim 12 wherein the polymer is a polyvinyl-chloride resin, and which polymer contains a peroxide-curing catalyst.
Claim 18
Dependent Claim
37 words
The process of claim 12 wherein the polymer is cross-linked by exposing the polymer to ionizing radiation in an amount from one to twenty megarads at a dosage rate of at least 0.1 megarads per hour. 12.
References Cited (Backward Citations)
US3234190A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-10 | 1978-09-09 | 1979-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-10 | 1982-09-09 | 1983-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-10 | 1986-09-09 | 1987-03-11 | $7700.00 | Window Closed / Lapsed |