Methacrylated polyurethane copolymers with silicone segments containing alkoxysilyl groups
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United States of America Patent
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Jun 15, 2004
Grant Date -
N/A
app pub date -
May 17, 2002
filing date -
May 17, 2002
priority date (Note) -
Expired
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Abstract
The present invention relates to the preparation of a new class of materials, namely, an acrylate terminated or end-capped urethane/urea copolymer containing silicone soft segments capable of dual cure via unsaturated groups and dialkoxyl silanol groups. This new class of material is a reaction product of a partially methacrylated end-capped urethane polymer containing hard segment blocks and an amino alkylene dialkoxy end-capped siloxane block polymer, containing soft-segments. The aminoalkylene dialkoxysilane end-capped siloxane segment of this copolymer can include siloxane diol segments of various molecular weights (e.g., 1,000 to 20,000) end-capped with various alkylaminoalkylene trimethoxy silanes. This copolymer is therefore capable of dual cure via these functional groups.
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