Polyether derivative and a poly(urethane)ureamide obtained therefrom
AssigneeToyo Tire & Rubber Co., Ltd.
InventorsKozo Otani, Yoshio Yamada
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Abstract
A poly(urethane)ureamide which comprises a polymer obtained by a reaction of (a) a polyether derivative of the general formula [I] and (b) a polyisocyanate exhibits an excellent wear resistance and heat resistance due to the presence of the aromatic amido groups ##STR1## wherein A is an n-valent radical obtained by removal of hydroxyl groups from an n-valent polyoxyalkylenepolyol having a molecular weight of 400 to 10,000, n is an integer of 2 to 8, x is an average value and a number of 0.ltoreq.x<(n-1) and y is an average value and a number of 0.05.ltoreq.y<1.
Claims8
A polyether derivative of the formula ##STR5## wherein A is an n-valent radical obtained by removal of hydroxyl groups from an n-valent polyoxyalkylenepolyol having a molecular weight of 400 to 10,000,
- n is an integer of 2 to 8,
- x is an average value and a number of 0.ltoreq.x<(n-1) and
- y is an average value and a number of 0.05.ltoreq.y<1.
A process for preparing a polyether derivative of the formula ##STR6## wherein A is an n-valent radical obtained by removal of hydroxyl groups from an n-valent polyoxyalkylenepolyol having a molecular weight of 400 to 10,000,
- n is an integer of 2 to 8,
- x is an average value and a number of 0.ltoreq.x<(n-1) and
- y is an average value and a number of 0.05.ltoreq.y<1,
- which process comprises reacting one mole of an n-valent polyoxyalkylene polyol having a molecular weight of 400 to 10,000 with 0.125n to 2n moles of aminobenzoic acid in the presence of 0.125n to 30n equivalents of an aliphatic alcohol.
A poly(urethane)ureamide which comprises a polymer obtained by a reaction of (a) a polyether derivative of the formula ##STR7## wherein A is an n-valent radical obtained by removal of hydroxyl groups from an n-valent polyoxyalkylenepolyol having a molecular weight of 400 to 10,000,
- n is an integer of 2 to 8,
- x is an average value and a number of 0.ltoreq.x<(n-1) and
- y is an average value and a number of 0.05.ltoreq.y<1,
- and (b) a polyisocyanate.
Dependencies are inferred from the claim text.