Preparation of low density porous crosslinked polymeric materials

摘要

(57) Fourth of 1 or more having a hydrocarbon group of 1 or more carbon atoms (b) of 8 or more and an anionic functional group having an anionic functional group [Abstract] (a) and oil soluble tail By using a surfactant system containing quaternary salts, a stable high internal phase water-in-oil containing useful in the production of low density porous crosslinked polymeric material, the initiator polymerizable vinyl monomer, and crosslinking monomer I can be obtained emulsion. Water-in-oil emulsion is formed with a surfactant concentration lower than sorbitan fatty acid ester alone, a surfactant improved performance at high temperatures is obtained.