US4218548A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Peroxy compounds and vulcanizable compositions thereof
Assignee: Arkema Inc
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Filing: 1979-06-20
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Granted: 1980-08-19
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Expires: 1999-06-20
Abstract
Abstract A novel class of compounds having the formula ##STR1## where Z is a substituted carbonate or carbamate, D is alkynyl or an alkyl, and the R's may be alkyl.
Inventors
- 👤 Orville L. Mageli
- 👤 William A. Swarts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:33
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/14
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
123 words
In a vulcanizable composition comprising an intimate mixture of a polymeric compound capable of being crosslinked to form a thermoset material and a crosslinking agent in an amount sufficient to afford the desired degree of crosslinking, the improvement comprising using as said agent a peroxy compound of the formula: ##STR12## where: (a) R 1 is hydrogen or an alkyl of 1-4 carbons; (b) R 2 and R 3 are an alkyl of 1-4 carbons; (c) R 4 is t-alkyl of 4-10 carbons, t-aralkyl of 9-16 carbons, t-cycloalkyl of 6-12 carbons or ##STR13## (d) Z is ##STR14## (e) R 5 and R 7 are independently an alkyl of 1-8 carbons; and (f) D is ethynyl diradical, diethynyl diradical or alkyl diradical having 1-8 carbons.
Claim 2
Dependent Claim
123 words
In a vulcanizable composition comprising an intimate mixture of a polymeric compound capable of being crosslinked to form a thermoset material and a crosslinking agent in an amount sufficient to afford the desired degree of crosslinking, the improvement comprising using as said agent a peroxy compound of the formula: ##STR12## where: (a) R 1 is hydrogen or an alkyl of 1-4 carbons; (b) R 2 and R 3 are an alkyl of 1-4 carbons; (c) R 4 is t-alkyl of 4-10 carbons, t-aralkyl of 9-16 carbons, t-cycloalkyl of 6-12 carbons or ##STR13## (d) Z is ##STR14## (e) R 5 and R 7 are independently an alkyl of 1-8 carbons; and (f) D is ethynyl diradical, diethynyl diradical or alkyl diradical having 1-8 carbons.
Claim 3
Dependent Claim
33 words
The composition of claim 1 wherein the polymeric compound is selected from the group consisting of polyethylene, ethylene-propylene rubber, nitrile rubber, natural rubber, silicone rubber, polyurethane rubber, polyester resin, and ethylene-vinyl acetate copolymer.
Claim 4
Dependent Claim
10 words
The composition of claim 2 wherein a filler is present.
Claim 5
Dependent Claim
21 words
A vulcanizable composition which comprises an intimate mixture of low density polyethylene and about 1-5 PHR of 1,3 dimethyl-3-(t-butylperoxy)butyl n-butyl carbonate.
Claim 6
Dependent Claim
21 words
A vulcanizable composition which comprises an intimate mixture of low density polyethylene and about 1-5 PHR of 1,3 dimethyl-3-(t-butylperoxy)butyl n-butyl carbonate.
Claim 7
Dependent Claim
28 words
A method of making a crosslinked material which comprises heat curing the vulcanizable composition of claim 1 for a time sufficient to obtain the desired degree of crosslinking.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-08-19 | 1984-02-18 | 1984-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-08-19 | 1988-02-18 | 1988-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-08-19 | 1992-02-18 | 1992-08-19 | $7700.00 | Window Closed / Lapsed |