发明授权
US4094693A D,L Tartaric acid as retardant for gypsum plaster 失效
D,L酒石酸作为石膏膏的阻燃剂

D,L Tartaric acid as retardant for gypsum plaster
摘要:
Industrial gypsum plaster (plaster of Paris) having a delayed setting time is prepared by including D,L-tartaric acid and sufficient calcium hydroxide that a 5 weight % aqueous suspension of the plaster has a pH of at least 11.5.
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