Process for making curable adhesive polyurethane products

Details Process for making curable adhesive polyurethane products Process for making curable adhesive polyurethane products

1981-09-14

1983-02-08

Cockeram, H. S.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524712, 524714, 524730, 524773, 528 51, 528 52, 528 59, 528 77, 560 23, C07C 7946, C08G 1808, C08K 509

Patent

active

043730574

ABSTRACT:
This invention is directed to a polyurethane product produced by a one step process, in the absence of a polymerization catalyst, with reactants, and additives, if any, being initially intermingled in the ambient room temperature range and reacted with intermingling in the absence of externally added heat. The reactants are (1) aliphatic, aromatic, or cycloaliphatic having at least two isocyanate groups and (2) diol/polyol compounds having at least two sterically unhindered hydroxyl groups. The product is a liquid, homogeneous adhesive material characterized by a natural absence of polymerization catalyst residue and capable of being cured because of the presence of unreacted isocyanate groups, the isocyanate reactant being charged in excess of the stoichiometric requirement of the diol/polyol reactant.

REFERENCES:
patent: 3351573 (1967-11-01), Skreckoski
patent: 3639355 (1972-02-01), Wooster
patent: 3734896 (1973-05-01), Patton
patent: 3933725 (1976-01-01), Dearlove et al.
patent: 3980594 (1976-09-01), Fabris et al.
patent: 4040992 (1977-08-01), Bechara et al.
patent: 4145515 (1979-03-01), Pogozelski et al.
patent: 4169175 (1979-09-01), Marans et al.
patent: 4182898 (1980-01-01), Fujiwara et al.
patent: 4261852 (1981-04-01), Carroll et al.
Saunders et al., Polyurethanes, Part II, Interscience, N.Y., (1964), pp. 38-43.

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