Process for the preparation of primarily closed cell rigid foams

Details Process for the preparation of primarily closed cell rigid foams Process for the preparation of primarily closed cell rigid foams

1987-12-01

1990-01-30

Kight, John

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521173, C08G 1800, C08G 1814

Patent

active

048974315

ABSTRACT:
Disclosed is a process for the preparation of primarily closed cell rigid foams, useful for strengthening mechanical construction parts or for use as insulation material, containing urethane groups, or urethane and isocyanurate groups where the polyol component is a higher molecular weight polyester polyol, containing in bonded form units having one or more of the structures: ##STR1## or a mixture of said polyester polyol and known polyester polyols and/or polyether polyols.

REFERENCES:
patent: 3288732 (1966-11-01), Chapman et al.
patent: 3661811 (1970-09-01), Hardy et al.
patent: 4576974 (1986-03-01), Carroll et al.
patent: 4595705 (1986-06-01), Werner et al.
patent: 4731392 (1988-03-01), Streu et al.

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