EP0400786A2
Expired / Lapsed
EP
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Heat stable acrylamide polysiloxane composition
Assignee: Dow Silicones Corp
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Filing: 1990-03-29
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Granted: —
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Expires: 2010-03-29
Abstract
Abstract Heat stable acrylamide functional polyorganosiloxanes which cure by exposure to ultraviolet radiation are obtained by addition of zinc naphthenate, stannous octoate and organotitanates.
Inventors
- 👤 Michael Andrew Lutz
- 👤 Kristen Andrea Scheibert
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 12:38
CPC Classifications
C; C08; C08L; C08L83/00; C08L83/04; C08K; C08K5/00; C08K5/04; C08K5/05; C08K5/057; C08G; C08G77/00; C08G77/04; C08G77/22; C08G77/26; C08G77/38; C08G77/382; C08G77/388; C08K5/09; C08K5/098
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
61 words
A composition comprising a polyorganosiloxane having on the average more than about 0.4 acrylamide functional groups per molecule and being crosslinkable by exposure to ultraviolet radiation in the presence of a photosensitization system, an effective amount of a heat stability additive selected from the group consisting of zinc naphthenate, stannous octoate and tetraorganotitanate and an effective amount of a photosensitization system.
Claim 2
Dependent Claim
61 words
A composition comprising a polyorganosiloxane having on the average more than about 0.4 acrylamide functional groups per molecule and being crosslinkable by exposure to ultraviolet radiation in the presence of a photosensitization system, an effective amount of a heat stability additive selected from the group consisting of zinc naphthenate, stannous octoate and tetraorganotitanate and an effective amount of a photosensitization system.
Claim 3
Dependent Claim
233 words
The composition according to claim 1 in which the polydiorganosiloxane is a blend of (A) 4 to 90 mole percent of an acrylamide functional endblocked polydiorganosiloxane of the general formula YR′₂SiO(R₂SiO) n SiR′₂Y, (B) 9 to 50 mole percent of a monoacrylamide functional endblocked polydiorganosiloxane of the general formula R′₃SiO(R₂SiO) n SiR′₂Y, and (C) 0 to 65 mole percent of a nonfunctional polydiorganosiloxane of the formula R′₃SiO(R₂SiO) n SiR′₃ where, in the above formulae, A is a monovalent radical selected from the group consisting of alkyl, aryl and fluorinated alkyl; each R′ is independently selected from the group consisting of R, hydroxyl and a hydrolyzable group, Y is an acrylamide functional radical bonded to silicon atom through silicon-carbon bond where the acrylamide function has the formula in which R˝ is a hydrogen atom or methyl, R² is hydrogen atom or an alkyl of 1 to 4 carbon atoms, R³ is a divalent hydrocarbon radical having from 1 to 10 carbon atoms per radical, R* is a divalent hydrocarbon radical or a divalent hydrocarbon radical containing ether linkages and n has a value of from 30 to 3,000, the mole percentages being based on the total blend as 100 mole percent and where the polydiorganosiloxanes of the blend are present in amounts to provide 20 to 95 percent of the endblocking as acrylamide functionality and 5 to 80 percent of the endblocking as nonfunctional.
Claim 4
Dependent Claim
15 words
The composition according to claim 1 in which the heat stability additive is zinc naphthenate.
Claim 5
Dependent Claim
14 words
The composition according to claim 1 in which the heat stability additive is organotitanate.
Claim 6
Dependent Claim
15 words
The composition according to claim 1 in which the heat stability additive is stannous octoate.
References Cited (Backward Citations)
No citation records indexed.
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