发明授权
US5389708A Sulfur-containing acid phosphoric ester internal release agent 失效
含硫酸磷酸酯内部脱模剂

Sulfur-containing acid phosphoric ester internal release agent
摘要:
An internal release agent comprises a sulfur-containing acid phosphoric esters selected from the group consisting of thiophosphoric acid esters and dithiophosphoric acid esters of the formula, ##STR1## where X and Y are independently selected from the group consisting of an oxygen atom and a sulfur atom, at least one of X and Y is a sulfur atom, and R.sub.1 and R.sub.2 are independently alkyl groups.
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