Thermally reactive water-soluble blocked urethane prepolymer

Details Thermally reactive water-soluble blocked urethane prepolymer Thermally reactive water-soluble blocked urethane prepolymer

1982-09-14

1984-02-21

Cockeram, H. S.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From reactant having at least one -n=c=x group as well as...

81156, 8192, 156330, 525124, 528 71, 528 73, 528 75, 528499, C08G 1880, C08F 830

Patent

active

044330170

ABSTRACT:
A thermally reactive water-soluble urethane prepolymer having a plurality of masked isocyanate groups capable of regenerating free isocyanate groups at an elevated temperature, said urethane prepolymer having the formula: ##STR1## wherein A is an organic bridging group having a valency from 3 to 5,

REFERENCES:
patent: 4098933 (1978-07-01), Burkhardt et al.
patent: 4119602 (1978-10-01), Isgur et al.
patent: 4284544 (1981-08-01), Wegner et al.
patent: 4314922 (1982-02-01), Lehner et al.
patent: 4322327 (1982-03-01), Yoshimura et al.
patent: 4349655 (1982-09-01), Leitner et al.

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