US5861467A
Expired / Lapsed
US
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Radiation curable siloxane compositions containing vinyl ether functionality and methods for their preparation
Assignee: Dow Silicones Corp
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Filing: 1993-05-18
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Granted: 1999-01-19
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Expires: 2013-05-18
Abstract
Abstract The present invention relates to radiation curable silicone vinyl ethers and methods for preparing silicone vinyl ethers. More particularly, the present invention relates compositions containing vinyl ether functional silicones and to the preparation and use of silicone vinyl ethers which are curable by addition of photocleavable acids and exposure to ultraviolet or electron beam radiation.
Inventors
- 👤 Valerie Joy Bujanowski
- 👤 Shedric Oneal Glover
- 👤 Susan Victoria Perz
- 👤 Maris Jazeps Ziemelis
- 👤 Gary Rex Homan
- 👤 Michael Ward Skinner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:59
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/0008; C08K5/0025; C08G; C08G77/00; C08G77/04; C08G77/06; C08G77/08; C08G77/20; C08G77/38; C09; C09D; C09D183/00; C09D183/04; C09D183/06; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31652; Y10T428/31663; Y10T428/31667
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
160 words
A method of making a vinylether functional siloxane, the method comprising the steps of: (I) reacting: (a) a silane having the formula R x Si(OR 1 ) 4-x ; (b) water; and (c) an acidic condensation catalyst, wherein R is a monovalent hydrocarbon or halohydrocarbon radical having from 1 to 20 carbon atoms, R 1 is a monovalent alkyl radical having from 1 to 8 carbon atoms, x has a value of from 0 to 3, with the proviso that the molar ratio of water to alkoxy radicals is less than 0.5; (II) removing alcohol from the reaction mixture of (I); (III) neutralizing the mixture of (II); (IV) adding a vinyl ether compound having the formula HOR 2 OCH═CH 2 wherein R 2 is a divalent hydrocarbon or halohydrocarbon radical having from 1 to 20 carbon atoms to the mixture of (III); (V) adding a transesterification catalyst to the mixture of (IV); (VI) removing volatiles from the mixture of (V).
Claim 2
Independent Claim
160 words
A method of making a vinylether functional siloxane, the method comprising the steps of: (I) reacting: (a) a silane having the formula R x Si(OR 1 ) 4-x ; (b) water; and (c) an acidic condensation catalyst, wherein R is a monovalent hydrocarbon or halohydrocarbon radical having from 1 to 20 carbon atoms, R 1 is a monovalent alkyl radical having from 1 to 8 carbon atoms, x has a value of from 0 to 3, with the proviso that the molar ratio of water to alkoxy radicals is less than 0.5; (II) removing alcohol from the reaction mixture of (I); (III) neutralizing the mixture of (II); (IV) adding a vinyl ether compound having the formula HOR 2 OCH═CH 2 wherein R 2 is a divalent hydrocarbon or halohydrocarbon radical having from 1 to 20 carbon atoms to the mixture of (III); (V) adding a transesterification catalyst to the mixture of (IV); (VI) removing volatiles from the mixture of (V).
Claim 3
Dependent Claim
14 words
A method according to claim 1, further comprising heating the mixture after step (I).
Claim 4
Dependent Claim
63 words
A method according to claim 1, further comprising adding a polydiorganosiloxane having the formula HOSiR 3 2 (R 3 2 SiO) n OSiR 3 2 OH wherein R 3 is selected from the group consisting of a monovalent hydrocarbon radical or halohydrocarbon radical having from 1 to 20 carbon atoms, and n has a value of 0 to 15,000, prior to step (III).
Claim 5
Dependent Claim
21 words
A method according to claim 3, wherein R 3 is methyl and n has a value of from 10 to 60.
Claim 6
Dependent Claim
38 words
A method according to claim 1, further comprising adding an alcohol having the formula R 4 OH, wherein R 4 is is a monovalent hydrocarbon or halohydrocarbon radical having from 1 to 20 carbon atoms, after step (I).
Claim 7
Dependent Claim
65 words
A method according to claim 1, wherein the acidic condensation catalyst is selected from the group consisting of hydrochloric acid, H 2 SO 4 , sulfonic acids, H 3 PO 4 , (PNCl 2 ) x , acid anhydrides, acid clays, ion exchange resins, RCOCl, and (RCO) 2 O, wherein R is a monovalent hydrocarbon or halohydrocarbon radical having from 1 to 20 carbon atoms.
Claim 8
Dependent Claim
51 words
A method according to claim 1, wherein R 2 is selected from the group consisting of methylene, ethylene, propylene, hexylene, trimethylene, 2-methyltrimethylene, pentamethylene, hexamethylene, 3-ethyl-hexamethylene, octamethylene, --CH 2 (CH 3 )CH--, --(CH2) 4 --, --CH 2 CH(CH 3 )CH 2 --, --(CH 2 ) 18 --, cyclohexylene, cyclohexyldimethylene, phenylene, and benzylene.
Claim 9
Dependent Claim
55 words
A method according to claim 1, wherein the transesterification catalyst is selected from the group consisting of dimethyltin neodecanoate, dibutyltin diacetate, dibutyltin dilaurate, dioctyltin dilaurate, dibutyltin dioctoate, zinc napthenate, cobalt napthenate, zinc octylate, tin octylate, cobalt octylate, diisooctyl mercaptoacetate, zirconium napthenate, zirconium octylate, tetrabutyl orthotitanate, tetraisopropyl titanate, barium hydroxide monohydrate, stannous octoate, and sodium methoxide.
Claim 10
Dependent Claim
11 words
A compound produced in accordance with the method of claim 1.
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 2002-01-18 | 2002-07-20 | 2003-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-01-18 | 2006-07-20 | 2007-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-01-18 | 2010-07-20 | 2011-01-19 | $7700.00 | Window Closed / Lapsed |