Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From aldehyde or derivative thereof as reactant
Patent
1980-08-25
1982-07-20
Welsh, Maurice J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From aldehyde or derivative thereof as reactant
568601, C08G 6534
Patent
active
043407196
ABSTRACT:
Oligomeric formal diols are prepared by coupling segments of PTMEG, each having a molecular weight of 1000-3000, with formaldehyde. The formal diols are useful in preparing polyurethanes.
REFERENCES:
patent: 2929800 (1960-03-01), Hill
patent: 2961428 (1960-11-01), Muller et al.
patent: 3959227 (1976-05-01), Chang et al.
Schonfeld, J. Polymer Sci., vol. 59, 1962, pp. 87-92.
E. I. Du Pont de Nemours and Company
Welsh Maurice J.
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