| 摘要 |
Acrylic resin molding plate is prepared by further addition of phosphoric acid ester complex of formula (I) as a viscositycontrol agent where the polymerization of a mixt. of 25-40 wt.% acrylic resin sirup and 55-75 wt.% hydroxy aluminium with crosslinking agent and polymerization initiator. The viscosity-control agent is a mixt. of mono-phosphoric acid ester, diester and small amount triester which are prepared by phosphoric acid esterification of ester-type non-ion surfactants. In (I), n is an average addition mole of acetic ethylene, R is C8-30 alkyl or alkylphenyl. Pref. the phosphoric acid complex is added in 0.05-5.0 wt.% resp. to acrylic resin sirup.
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