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US4451634A
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Silicone elastomer compositions suitable for ultraviolet ray curing
Assignee: Momentive Performance Materials Japan LLC
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Filing: 1983-01-12
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Granted: 1984-05-29
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Expires: 2003-01-12
Abstract
Abstract Silicone elastomeric compositions suitable for ultraviolet ray curing comprising: (A) 100 parts by weight of a polyorganosiloxane of the general formula: (CH3)2R1SiO-R22SiO]nSiR1(CH3)2 (1) wherein R1 represents hydrogen or a monovalent radical selected from the group consisting of methyl, vinyl, and hydroxy, R2 represents hydrogen or a substituted or unsubstituted monovalent hydrocarbon radical, 0.02-49.95% based on the total number of R1 and R2 groups are vinyl radicals 0.05-49.98% based on the total number of R1 and R2 groups are hydrogen and n represents a number from 10-10,000. (B) 0.5-10 parts by weight of a polyorganosiloxane having an average formula: <IMAGE> wherein R3 represents a substituted or unsubstituted monovalent hydrocarbon radical other than vinyl, a represents a number of 0.01</=a</= in an average, and b represents a number of 0</=b<3 in an average, and a+b being a number from 1 to 3 inclusive, and (C) 0.1-10.0 parts by weight a peroxyester of the general formula: <IMAGE> wherein R4 represents a substituted or unsubstituted monovalent aliphatic hydrocarbon group and R5 represents a substituted or unsubstituted monovalent aromatic hydrocarbon radical.
Inventors
- 👤 Masayuki Hatanaka
- 👤 Atsushi Kurita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:42
CPC Classifications
C; C08; C08L; C08L83/00; C08L83/04; C08K; C08K5/00; C08K5/04; C08K5/14; C08G; C08G77/00; C08G77/04; C08G77/12; C08G77/14; C08G77/16; C08G77/20; C08G77/70
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
191 words
Silicone elastomeric compositions suitable for ultraviolet ray curing comprising: (A) 100 parts by weight of a polyorganosiloxane of the general formula: (CH.sub.3).sub.2 R.sup.1 SiO--R.sub.2.sup.2 SiO).sub.n SiR.sup.1 (CH).sub.2 ( 1) wherein R 1 represents hydrogen or a monovalent radical selected from the group consisting of methyl, vinyl, and hydroxy, R 2 represents hydrogen or a substituted or unsubstituted monovalent hydrocarbon radical, 0.02-49.95% based on the total number of R 1 and R 2 groups are vinyl radicals 0.05-49.98% based on the total number of R 1 and R 2 groups are hydrogen and n represents a number from 10-10,000 (B) 0.5-10 parts by weight of a polyorganosiloxane having an average formula: ##STR6## wherein R 3 represents a substituted or unsubstituted monovalent hydrocarbon radical other than vinyl, a represents a number of 0.01≦a≦1 in an average, and b represents a number of 0≦b<3 in an average, and a+b being a number from 1 to 3 inclusive, and (C) 0.1-10.0 parts by weight a peroxyester of the general formula: ##STR7## wherein R 4 represents a substituted or unsubstituted monovalent aliphatic hydrocarbon group and R 5 represents a substituted or unsubstituted monovalent aromatic hydrocarbon radical.
Claim 2
Dependent Claim
191 words
Silicone elastomeric compositions suitable for ultraviolet ray curing comprising: (A) 100 parts by weight of a polyorganosiloxane of the general formula: (CH.sub.3).sub.2 R.sup.1 SiO--R.sub.2.sup.2 SiO).sub.n SiR.sup.1 (CH).sub.2 ( 1) wherein R 1 represents hydrogen or a monovalent radical selected from the group consisting of methyl, vinyl, and hydroxy, R 2 represents hydrogen or a substituted or unsubstituted monovalent hydrocarbon radical, 0.02-49.95% based on the total number of R 1 and R 2 groups are vinyl radicals 0.05-49.98% based on the total number of R 1 and R 2 groups are hydrogen and n represents a number from 10-10,000 (B) 0.5-10 parts by weight of a polyorganosiloxane having an average formula: ##STR6## wherein R 3 represents a substituted or unsubstituted monovalent hydrocarbon radical other than vinyl, a represents a number of 0.01≦a≦1 in an average, and b represents a number of 0≦b<3 in an average, and a+b being a number from 1 to 3 inclusive, and (C) 0.1-10.0 parts by weight a peroxyester of the general formula: ##STR7## wherein R 4 represents a substituted or unsubstituted monovalent aliphatic hydrocarbon group and R 5 represents a substituted or unsubstituted monovalent aromatic hydrocarbon radical.
Claim 3
Dependent Claim
22 words
Silicone elastomeric compositions according to claim 1 wherein said polyorganohydrogensiloxane (A) has a viscosity of at least 500 cSt at 25° C.
Claim 4
Dependent Claim
41 words
Silicone elastomer compositions according to claim 1 wherein 0.02-5% based on the total number of R 1 and R 2 groups are vinyl groups and 0.05-10% based on the total number of R 1 and R 2 groups are hydrogen groups.
Claim 5
Dependent Claim
26 words
Silicone elastomer compositions according to claim 1 wherein the R 2 groups other than vinyl and hydrogen are methyl groups or phenyl groups or combinations thereof.
Claim 6
Dependent Claim
21 words
Silicone elastomer compositions according to claim 1 wherein polyorganosiloxane (B) has a viscosity of less than 100 cSt at 25° C.
Claim 7
Dependent Claim
28 words
Silicone elastomer compositions according to claim 1 wherein polyorganosiloxane (B) is represented by the general formula: ##STR8## wherein p represents a number in the range of 3-10 inclusive.
Claim 8
Dependent Claim
14 words
Silicone elastomer compositions according to claim 1 wherein R 3 represents a methyl group.
Claim 9
Dependent Claim
14 words
Silicone elastomer compositions according to claim 1 whewrein R 4 represents a tert-butyl group.
Claim 10
Dependent Claim
13 words
Silicone elastomer compositions according to claim 1 wherein peroxyester (C) is tert-butyl peroxybenzoate.
References Cited (Backward Citations)
US4335035A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-05-29 | 1987-11-28 | 1988-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-29 | 1991-11-28 | 1992-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-29 | 1995-11-28 | 1996-05-29 | $7700.00 | Window Closed / Lapsed |