文献类型：专利

英文题名：Process for preparation of polyurethane-vinyl polymer water dispersing liquid

作者：YING S;HU C;XU Q

机构：[1]UNIV EAST CHINA SCI & TECHNOLOGY

申请号：CN1275585-A

申请日：1999-05-31

公开日：2000-12-06

语种：英文

收录：DERWENT

摘要：NOVELTY - A preparation method of polyurethane-vinyl polymer water dispersion liquor includes the following steps: (a) preparing isocyanate end group polyurethane prepolymer containing hydrophilic group; (b) end-capping the prepolymer by using the invented end-capping agent (the invention provides its structural formula), and the end-capped hydrophilic polyurethane prepolymer would be de blocked in water; (c) adding vinyl monomer into end-capped prepolymer to form end-capped polyurethane prepolymer and vinyl monomer mixture; (d) adding trialkylamine to the above-mentioned mixture; (e) dispersing the mixture in water; (f) adding initiator and chain extender to the water dispersion liquor; and (g) heating the water dispersion liquor to make vinyl monomer polymerize and make the end-capped polyurethane prepolymer de block and then extend chain.