US4239644A
Expired / Lapsed
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Liquid peroxide composition
Assignee: Mitsui Chemicals Inc
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Filing: 1979-03-21
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Granted: 1980-12-16
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Expires: 1999-03-21
Abstract
Abstract A liquid peroxide composition comprising dicumyl peroxide and a dicumyl peroxide derivative having one nucleus substituted by an alkyl group having 1 to 3 carbon atoms is disclosed. This peroxide composition can easily be handled because it is liquid, and it is very valuable as a cross-linking agent for an olefin polymer or a synthetic rubber.
Inventors
- 👤 Hirohiko Nambu
- 👤 Kenichi Mizuno
- 👤 Tetuhiro Matumoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:55
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/14; C07; C07C; C07C409/00; C07C409/16; C08F; C08F4/00; C08F4/28; C08F4/32; C08F4/38
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
60 words
A peroxide composition which is liquid at 25° C. and which can be used as a liquid cross-linking agent for high polymers, comprising (A) dicumyl peroxide and (B) a peroxide represented by the following general formula: ##STR5## wherein R stands for an alkyl group having 1 to 3 carbon atoms, at an (A)/(B) weight ratio of from 70/30 to 5/95.
Claim 2
Dependent Claim
60 words
A peroxide composition which is liquid at 25° C. and which can be used as a liquid cross-linking agent for high polymers, comprising (A) dicumyl peroxide and (B) a peroxide represented by the following general formula: ##STR5## wherein R stands for an alkyl group having 1 to 3 carbon atoms, at an (A)/(B) weight ratio of from 70/30 to 5/95.
Claim 3
Dependent Claim
29 words
A peroxide composition as set forth in claim 1 wherein dicumyl peroxide (A) and the peroxide (B) are contained at an (A)/(B) weight ratio of from 60/40 to 10/90.
Claim 4
Dependent Claim
15 words
A peroxide composition as set forth in claim 1 wherein the peroxide (B) is α,α-dimethylbenzyl(α,α-dimethyl-m-methylbenzyl)peroxide.
Claim 5
Dependent Claim
15 words
A peroxide composition as set forth in claim 1 wherein the peroxide (B) is α,α-dimethylbenzyl(α,α-dimethyl-p-methylbenzyl)peroxide.
Claim 6
Dependent Claim
20 words
A peroxide composition as set forth in claim 1 wherein the peroxide (B) is a mixture of α,α-dimethylbenzyl(α,α-dimethyl-m-methylbenzyl)peroxide and α,α-dimethylbenzyl(α,α-dimethyl-p-methylbenzyl)peroxide.
Claim 7
Dependent Claim
99 words
A process for the preparation of a peroxide composition comprising (A) dicumyl peroxide and (B) a peroxide represented by the following general formula: ##STR6## wherein R stands for an alkyl group having 1 to 3 carbon atoms, at an (A)/(B) weight ratio of from 70/30 to 5/95, which comprises reacting cumene hydroperoxide with an alcohol mixture of (C) α,α-dimethylbenzyl alcohol and (D) an alcohol represented by the following general formula: ##STR7## wherein R stands for an alkyl group having 1 to 3 carbon atoms, in the presence of an acid catalyst, said peroxide composition being liquid at 25° C.
Claim 8
Dependent Claim
99 words
A process for the preparation of a peroxide composition comprising (A) dicumyl peroxide and (B) a peroxide represented by the following general formula: ##STR6## wherein R stands for an alkyl group having 1 to 3 carbon atoms, at an (A)/(B) weight ratio of from 70/30 to 5/95, which comprises reacting cumene hydroperoxide with an alcohol mixture of (C) α,α-dimethylbenzyl alcohol and (D) an alcohol represented by the following general formula: ##STR7## wherein R stands for an alkyl group having 1 to 3 carbon atoms, in the presence of an acid catalyst, said peroxide composition being liquid at 25° C.
Claim 9
Dependent Claim
97 words
A process for the preparation of a peroxide composition comprising (A) dicumyl peroxide and (B) a peroxide represented by the following general formula: ##STR8## wherein R stands for an alkyl group having 1 to 3 carbon atoms, at an (A)/(B) weight ratio of from 70/30 to 5/95, which comprises reacting α,α-dimethylbenzyl alcohol with a mixture of (E) cumene hydroperoxide and (F) a hydroperoxide represented by the following general formula: ##STR9## wherein R stands for alkyl group having 1 to 3 carbon atoms, in the presence of an acid catalyst, said peroxide composition being liquid at 25° C.
Claim 10
Dependent Claim
97 words
A process for the preparation of a peroxide composition comprising (A) dicumyl peroxide and (B) a peroxide represented by the following general formula: ##STR8## wherein R stands for an alkyl group having 1 to 3 carbon atoms, at an (A)/(B) weight ratio of from 70/30 to 5/95, which comprises reacting α,α-dimethylbenzyl alcohol with a mixture of (E) cumene hydroperoxide and (F) a hydroperoxide represented by the following general formula: ##STR9## wherein R stands for alkyl group having 1 to 3 carbon atoms, in the presence of an acid catalyst, said peroxide composition being liquid at 25° C.
Claim 11
Dependent Claim
85 words
A cross-linkable composition comprising 100 parts by weight of at least one high polymer selected from the group consisting of olefinic thermoplastic polymers and synthetic rubbery polymers, and 0.1 to 10 parts by weight of a cross-linking agent, said cross-linking agent consisting essentially of a peroxide composition comprising (A) dicumyl peroxide and (B) a peroxide represented by the following general formula: ##STR10## wherein R stands for an alkyl group having 1 to 3 carbon atoms, at an (A)/(B) weight ratio of from 70/30 to 5/95.
Claim 12
Dependent Claim
85 words
A cross-linkable composition comprising 100 parts by weight of at least one high polymer selected from the group consisting of olefinic thermoplastic polymers and synthetic rubbery polymers, and 0.1 to 10 parts by weight of a cross-linking agent, said cross-linking agent consisting essentially of a peroxide composition comprising (A) dicumyl peroxide and (B) a peroxide represented by the following general formula: ##STR10## wherein R stands for an alkyl group having 1 to 3 carbon atoms, at an (A)/(B) weight ratio of from 70/30 to 5/95.
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) | 1983-12-16 | 1984-06-16 | 1984-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-16 | 1988-06-16 | 1988-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-16 | 1992-06-16 | 1992-12-16 | $7700.00 | Window Closed / Lapsed |