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EP0400785A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Ultraviolet curable phenyl and acrylamide group-containing silicone compositions

Assignee: Dow Silicones Corp
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Filing: 1990-03-27
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Granted: —
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Expires: 2010-03-27
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Abstract

Abstract Compositions which are made up of acrylamide functional polyorganosiloxane and other non-silicon ingredients are compatible when the polyorganosiloxane contains from 5 to 50 mole percent aromatic groups bonded to the silicon atoms. These compositions can contain reactive diluents, photoinitiators and other non-silicon compounds. The compositions have low temperature properties and cure faster when exposed to ultraviolet radiation as the aromatic content increases. The compatibility with non-silicon compounds increases as the aromatic content increases and the spectrum of kinds of compounds and their amounts increases with increasing aromatic content. These compositions are useful in the electrical and electronic industry.

Inventors

  • 👤 Michael Andrew Lutz
  • 👤 Kristen Andrea Scheibert

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-29 13:39
CPC Classifications
C; C08; C08L; C08L83/00; C08L83/04; C08F; C08F299/00; C08F299/02; C08F299/08; C08L83/08; C09; C09D; C09D183/00; C09D183/04; C09D183/08; G; G03; G03F; G03F7/00; G03F7/004; G03F7/075; G03F7/0757

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 121 words
A composition comprising a compatible mixture of an acrylamide functional polyorganosiloxane having an average unit formula Y a R b SiO (4-a-b)/2 in which R is a monovalent organic group where at least 5 to 50 mole percent of R are aromatic based on all R equal to 100 mole percent, Y is an acrylamide functional group bonded to the silicon atom through a silicon-carbon bond, a has a value such that there is on the average at least 0.4 acrylamide functional groups per molecule, b has a value such that the polyorganosiloxane can be applied to a substrate and cured by exposure to ultraviolet radiation and the sum of a + b is at least 0.7 and a photosensitization system.
Claim 2
Dependent Claim 121 words
A composition comprising a compatible mixture of an acrylamide functional polyorganosiloxane having an average unit formula Y a R b SiO (4-a-b)/2 in which R is a monovalent organic group where at least 5 to 50 mole percent of R are aromatic based on all R equal to 100 mole percent, Y is an acrylamide functional group bonded to the silicon atom through a silicon-carbon bond, a has a value such that there is on the average at least 0.4 acrylamide functional groups per molecule, b has a value such that the polyorganosiloxane can be applied to a substrate and cured by exposure to ultraviolet radiation and the sum of a + b is at least 0.7 and a photosensitization system.
Claim 3
Dependent Claim 13 words
The composition according to claim 1 further comprising a non-silicon containing reactive diluent.
Claim 4
Dependent Claim 84 words
The composition according to claim 1 in which the acrylamide functional polyorganosiloxane is a polydi­organosiloxane and has the following average formula YR₂SiO(R₂SiO) x (YRSiO) y SiR₂Y in which x has a value of at least 10, y can have a value of 0 or greater and Y is an acrylamide functional group of the formula in which R˝ is hydrogen atom or methyl, R² is hydrogen atom or an alkyl radical of from 1 to 4 carbon atoms, R³ is a divalent hydrocarbon radical.

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