US3622609A
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Method of preparing 1,3-bis/hydroxyalkyl(aryl)/-tetraorganodisiloxanes
Assignee: Individual
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Filing: 1968-08-21
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Granted: 1971-11-23
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Expires: 1988-08-21
Abstract
Abstract Carbofunctional diols of the disiloxane series are prepared by reacting organohalosilanes with unsaturated alcohols in the presence of a tertiary amine as hydrogen chloride acceptor, and in an organic solvent medium, subjecting the resultant alkenyloxydiorganosilanes to polymerization in the presence of a hydrosilylation catalyst, boiling the mixture of siloxyalkanes thus obtained with an alkaline solution, and thereafter separating the desired product.
Inventors
- 👤 Vladimir Florovich Mironov
- 👤 Vadim Lvovich Kozlikov
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:56
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/4007; C08G59/4085; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/0834; C07F7/0838; C07F7/0896; C07F7/18; C07F7/1804; C07F7/1872; C07F7/1876; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/38; C08G18/3893; C08G59/20; C08G59/22; C08G59/30; C08G59/306; C08G63/00; C08G63/68; C08G63/695; C08G77/00; C08G77/60
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
11 words
A method according to claim 1, wherein the diorganohalosilane is dimethylchlorosilane.
Claim 2
Dependent Claim
14 words
A method according to claim 1, wherein the unsaturated hydroxy compound is allyl alcohol.
Claim 3
Dependent Claim
14 words
A method according to claim 1, wherein the unsaturated hydroxy compound is methallyl alcohol.
Claim 4
Dependent Claim
14 words
A method according to claim 1, wherein the unsaturated hydroxy compound is propargyl alcohol.
Claim 5
Dependent Claim
13 words
A method according to claim 1, wherein the unsaturated hydroxy compound is orthoallylphenol.
Claim 6
Dependent Claim
12 words
A method according to claim 1, wherein the tertiary amine is dimethylaniline.
Claim 7
Dependent Claim
13 words
A method according to claim 1, wherein the organic solvent is white spirit.
Claim 8
Dependent Claim
13 words
A method according to claim 1, wherein the organic solvent is dibutyl ether.
Claim 9
Dependent Claim
13 words
A method according to claim 1, wherein the organic solvent is diethyl ether.
Claim 10
Dependent Claim
19 words
A method according to claim 1, wherein the hydrosilylation catalyst is a 0.1N solution of chloroplatinic acid in isopropanol.
Claim 11
Dependent Claim
18 words
A method according to claim 1, wherein the polymerization is carried out at a temperature of 185*-210* C.
Claim 12
Dependent Claim
27 words
A method according to claim 1, wherein the mixture of siloxyalkanes is boiled with a 10-30 percent solution of sodium hydroxide for a period of 5 hours.
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) | 1974-11-22 | 1975-05-24 | 1975-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-22 | 1979-05-24 | 1979-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-22 | 1983-05-24 | 1983-11-23 | $7700.00 | Window Closed / Lapsed |