Polysiloxane block copolymers

Details Polysiloxane block copolymers Polysiloxane block copolymers

2008-09-26

2011-12-13

Zimmer, Marc (Department: 1765)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From silicon reactant having at least one...

C525S343000, C525S350000, C526S075000, C526S082000, C526S090000, C526S095000, C526S126000, C526S172000, C526S319000

Reexamination Certificate

active

08076440

ABSTRACT:
The invention relates to polysiloxane block copolymers of the formula A[LB(S)Q]m, where A is a polysiloxane block, L is a divalent organic linker, B is a polymer block composed of radically polymerizable monomers, S is a sulfur atom and Q is a monovalent organic radical and m is an integer from 1 to 50, to a method for their production, and to their use in cosmetics or personal care.

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“Atom Transfer Radical Poymerization of (Meth)acrylates from Poly(dimethylsiloxane) Macroinitiators” authored by Matyjaszewski et al. and published in Macromolecules 1999, 32, 8760-8767.
“End Group Modification or Poly(butyl acrylate) Prepared by Atom Transfer Radical Polymerization: Mechanistic Study using Gradient Polymer Elution Chromatography” authored by Snijder et al. and published in the Journal of Polymer Science, Part A: Polymer Chemistry (2202) 40, 2350-2359.
Written Opinion of the PCT International Searching Authority.

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