C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
C08L 83/07 (2006.01) C08K 5/01 (2006.01) C09D 4/00 (2006.01) C09D 183/04 (2006.01) C09D 183/07 (2006.01) D21H 19/32 (2006.01)
Patent
CA 2134725
A release modifier which comprises (i) a MQ resin consisting essentially of units of the formulae SiO2 and R3SiO1/2 wherein R denotes a monovalent hydrocarbon group having up to 3 carbon atoms, a hydrogen atom, a C2-5 alkenyl group of the formula -R'CH=CH2, provided there is at least one group -R'CH=CH2 present per MQ molecule and (ii) a .alpha.,.omega.-diolefin having the general formula CH2=CH-(CH2)n-CH=CH2, wherein n denotes an integer with a value of from 4 to 18 gives improved release force over prior art controlled release additives. Also claimed is a solventless release composition based on siloxanes having SiH groups and a catalyst in addition to the release modifier.
Hurford Simon R.
Parbhoo Bhukandas
Dow Corning Limited
Gowling Lafleur Henderson Llp
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