Photo-crosslinkable silicones comprising oxyalkylene styrene groups and their use
First Claim
1. A silicone co-polymer of molecular weight 5,000 to 100,000 having the general formula (I)
wherein V is a diorganosiloxane unit having monovalent hydrocarbon substituents having 1 to 8 carbon atoms, Ra is selected from the group consisting of methyl, ethyl, n-propyl, n-butyl, pentyl, hexyl, octyl and phenyl provided no more than one phenyl radical is bonded to any silicon atom, Rb is selected from the group consisting of Ra and an oxyalkylene styrene group connected to a silicon atom of a siloxane unit through a group selected from an alkylene unit, an alkylene unit having at least one oxygen atom in the chain and an alkylene unit having at least one sulphur atom in the chain, W is a siloxane unit having an oxyalkylene styrene group connected to the silicon atom of the siloxane unit through a group selected from an alkylene unit, an alkylene unit having at least one oxygen atom in the chain and an alkylene unit having at least one sulphur atom in the chain, Y is a diorganosiloxy unit wherein the organo radicals are selected from the group consisting of hydrocarbon having 1 to 12 carbon atoms and fluorinated hydrocarbon groups having 1 to 12 carbon atoms, Z represents a silfluoroalkylene-siloxy unit, v, y and z have identical or different values but they are not simultaneously zero;
w is always non-zero and v+y+z/w is from 1 to 100.
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Abstract
The invention is concerned with silicone copolymer containing terminal and/or pendant oxyalkylene styrene groups which are crosslinkable in the presence of a photoinitiator when exposed to UV radiation and their use in a compositions for coating substrates to provide substrates with anti-adhesive properties.
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Citations
10 Claims
- 1. A silicone co-polymer of molecular weight 5,000 to 100,000 having the general formula (I)
- space="preserve" listing-type="equation">R.sub.b (R.sub.a).sub.2 SiO(V).sub.v --(W).sub.w --(Y).sub.y --(Z).sub.z --Si(R.sub.a).sub.2 R.sub.b
wherein V is a diorganosiloxane unit having monovalent hydrocarbon substituents having 1 to 8 carbon atoms, Ra is selected from the group consisting of methyl, ethyl, n-propyl, n-butyl, pentyl, hexyl, octyl and phenyl provided no more than one phenyl radical is bonded to any silicon atom, Rb is selected from the group consisting of Ra and an oxyalkylene styrene group connected to a silicon atom of a siloxane unit through a group selected from an alkylene unit, an alkylene unit having at least one oxygen atom in the chain and an alkylene unit having at least one sulphur atom in the chain, W is a siloxane unit having an oxyalkylene styrene group connected to the silicon atom of the siloxane unit through a group selected from an alkylene unit, an alkylene unit having at least one oxygen atom in the chain and an alkylene unit having at least one sulphur atom in the chain, Y is a diorganosiloxy unit wherein the organo radicals are selected from the group consisting of hydrocarbon having 1 to 12 carbon atoms and fluorinated hydrocarbon groups having 1 to 12 carbon atoms, Z represents a silfluoroalkylene-siloxy unit, v, y and z have identical or different values but they are not simultaneously zero;
w is always non-zero and v+y+z/w is from 1 to 100.- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
Specification
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- Resources
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Current AssigneeDow Corning Corporation (Dow, Inc.)
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Original AssigneeDow Corning Corporation (Dow, Inc.)
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InventorsCaporiccio, Gerardo, Boutevin, Bernard J. L., Abdellah, Latifa
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Primary Examiner(s)Berman, Susan W.
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Application NumberUS08/229,247Time in Patent Office462 DaysField of Search528/30, 528/43, 528/36, 528/32, 528/25, 528/29, 528/34, 528/42, 522/31, 522/99, 427/515, 428/245, 428/391, 428/447US Class Current528/25CPC Class CodesC08G 77/382 containing atoms other than...C08G 77/385 containing halogensC08G 77/392 containing sulfurC08G 77/48 in which at least two but n...C09D 183/06 containing silicon bound to...C09D 183/08 containing silicon bound to...Y10T 428/31663 As siloxane, silicone or si...
