Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...
Patent
1985-01-14
1985-11-26
Welsh, Maurice J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
521914, C08G 1814
Patent
active
045555311
ABSTRACT:
The invention relates to rigid polyurethane foams prepared by reacting a polyether polyol other than one derived from an alkanolamine, an alkylene oxide adduct of an alkanolamine, catalyst and blowing agent, and an organic polyisocyanate. The compositions are useful as insulation.
REFERENCES:
patent: 3890255 (1975-06-01), van Leuwen et al.
patent: 4374209 (1983-02-01), Rowlands
patent: 4434277 (1984-02-01), Kozawa et al.
patent: 4438235 (1984-03-01), Brizgys
BASF Wyandotte Corporation
Lisicki Norbert M.
Welsh Maurice J.
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