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AssigneeUbe Industries, Ltd.
InventorsRyoichi Takasawa, Kosuke Fujiyama, Masahiro Naiki, Masahiko Watanabe, Yasuhiro Kawachi
Estimating the term…
The phosphorus-containing polycarbonate polyol disclosed herein has a structural unit (I) represented by a formula: —OCOO— and a structural unit (II) represented by a residue A, wherein A denotes a n-valent residue in which n of alcoholic hydroxyl groups are removed from a phosphorus compound having at least n of alcoholic hydroxyl groups, in which n is an integer of 2 or larger, and wherein a terminal group of the polyol is a alcoholic hydroxyl group. The novel phosphorus-containing polycarbonate polyol, as a reactive flame-retardant agent, can provide flame-retardant properties easily to polyurethane or the like.
A phosphorus-containing polycarbonate polyol, consisting essentially of:
A phosphorus-containing polycarbonate polyurethane, produced by reacting a phosphorus-containing polycarbonate polyol with a polyisocyanate, wherein the phosphorous-containing polycarbonate polyol consists essentially of:
Dependencies are inferred from the claim text.