US3607832A
Expired / Lapsed
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Silicon-containing compositions
Assignee: Midland Silicones Ltd
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Filing: 1969-10-13
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Granted: 1971-09-21
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Expires: 1989-10-13
Abstract
Abstract Organosilicon compositions comprising (1) a compound containing aliphatic carbon atoms linked by multiple bonds, such as isoprene or organopolysiloxanes containing vinyl substituents, (2) a silicon compound containing at least one SiH in the molecule, such as methylhydrogen polysiloxane, (3) a platinum catalyst, and (4) a sufficient amount to retard reaction at room temperature between (1) and (2) of a compound containing at least one ketoxime group, such as methylethyl ketoxime, are disclosed as heat curable elastomers.
Inventors
- 👤 Peter R A Hansen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:51
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/32; C08K5/33; Y; Y10; Y10S; Y10S528/00; Y10S528/901
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
38 words
A composition as claimed in claim 1 wherein the compound containing aliphatic carbon atoms linked by multiple bonds is an organosilicon polymer wherein at least two of the silicon atoms have attached thereto a radical containing aliphatic unsaturation.
Claim 2
Dependent Claim
37 words
A composition as claimed in claim 2 wherein the organosilicon polymer is a diorganopolysiloxane in which the silicon-bonded unsaturated radicals are vinyl radicals and at least 50 percent of the remaining silicon-bonded organic radicals are methyl radicals.
Claim 3
Dependent Claim
29 words
A composition as claimed in claim 1 wherein the silicon compound (2) is a linear or substantially linear siloxane polymer containing methyl and/or phenyl radicals as the organic substituents.
Claim 4
Dependent Claim
28 words
A composition as claimed in claim i wherein the platinum catalyst is chloroplatinic acid or a complex thereof formed by reaction with a siloxane containing silicon-bonded vinyl radicals.
Claim 5
Dependent Claim
15 words
A composition as claimed in claim 1 wherein the oxime compound (4) is methylethyl ketoxime.
Claim 6
Dependent Claim
27 words
A composition as claimed in claim 1 wherein the oxime compound is present in a proportion of from 1 to 100 moles per mole of platinum catalyst.
Claim 7
Dependent Claim
24 words
A process for the preparation of an organosilicon material which comprises heating to a temperature above 60* C. the composition claimed in claim 1.
Claim 8
Dependent Claim
29 words
A composition as claimed in claim 2 wherein the silicon compound (2) is a linear or substantially linear siloxane polymer containing methyl and/or phenyl radicals as the organic substituents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |