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US4820810A Urea catalyst for preparation of sucrose polyols useful for rigid polyurethane foams 失效
用于制备用于硬质聚氨酯泡沫的蔗糖多元醇的尿素催化剂

Urea catalyst for preparation of sucrose polyols useful for rigid
polyurethane foams
摘要:
Catalytic quantities of urea are used in the alkoxylation of aqueous sucrose to prepare low color polyols useful in rigid polyurethane foams.
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