Process for the preparation of polyurethane resins using low mol

Details Process for the preparation of polyurethane resins using low mol Process for the preparation of polyurethane resins using low mol

1981-07-10

1983-04-12

Welsh, Maurice J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521170, 528 76, 528 80, 528 85, C08G 1814

Patent

active

043798624

ABSTRACT:
This invention relates to a process for the preparation of polyurethane resins by the reaction of polyisocyanates with a mixture of various low molecular weight hydroxyaldehydes, hydroxyketones and polyhydric alcohols obtained by an improved process for the condensation of formaldehyde with itself.

REFERENCES:
patent: 4205138 (1980-05-01), Muller et al.
patent: 4221876 (1980-09-01), Wagner
patent: 4247654 (1981-01-01), Wagner
patent: 4288566 (1981-09-01), Muller et al.
patent: 4300003 (1981-11-01), Mohring et al.

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