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US 5,331,043 AGranted
(Meth)acrylate resins with reduced yellowing, their production and use
AssigneeDegussa AG
InventorsKlaus-Uwe Koch, Heidi Mich
Life of this patent
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Abstract
A silane-containing methacrylate resin composition which produces non-yellowing polymers. The composition contains 20-99.9% by weight (meth)acrylic acid ester, optionally other comonomers or polymers and softeners as well as 0.1-30% by weight of a silane. 100 parts by weight of this mixture are polymerized in the presence of a free radical initiator, Cu.sup.2+ and a quaternary amine. The components can be stored in premixtures and brought to reaction. The polymer can be used in glass laminates.
Claims17
A (meth)acrylate-containing, polymerizable mixture containing:
- ______________________________________ (Meth)acrylate (A) 20-99.9 parts by weight Comonomers (B) 0-79.9 parts by weight Soluble polymers 0-70 parts by weight in A or B (C) sum of A + B + C 59.9-99.9 parts by weight Silane 0.1-30 parts by weight Plasticizer 0-40 parts by weight the total of A + B + C + Silane + plasticizer being 100 parts by weight and, for each 100 parts by weight of the above-indicated components, free radical initiators 0.1-5 parts by weight organic Cu.sup.2+ 0.005-10d ppm Organic quaternary ammonium 0.005-3 parts by weight compounds Organic sulfur-containing chain 0-5 parts by weight. regulator compounds ______________________________________
Dependencies are inferred from the claim text.