Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...
Patent
1993-07-12
1994-09-06
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, 524714, 264 51, 2643281, 2643286, 2643288, C08G 1800
Patent
active
053448537
ABSTRACT:
Polyol mixtures containing a mixture of internal mold release agents which are storage stable are made up of (a) from about 55 to about 95% by weight of a polyol mixture of (1) 30-70% by weight of at least one polyol with an OH value of more than 700 and (2) from about 30 to about 70% by weight of at least one polyol with an OH value of 700 or less than 700 and (b) from about 5 to about 45% by weight of a mixture of internal mold release agents made up of (1) from about 60 to about 95% by weight of at least one salt-like release agent and (2) from about 5 to about 40% by weight of at least one non-salt-like release agent containing an amide NH function or a urethane NH function. Known auxiliaries and additives may optionally be included. These polyol mixtures are useful in the production of rigid, semirigid and flexible polyurethane materials, particularly molded polyurethanes.
REFERENCES:
patent: 3726952 (1973-04-01), Boden et al.
patent: 3925527 (1975-12-01), Kleimann et al.
patent: 4201847 (1980-05-01), Kleimann et al.
patent: 4254228 (1981-03-01), Kliemann et al.
patent: 4581387 (1986-04-01), Werner et al.
Knipp Ulrich
Neuhaus Alfred
VON Bonin Wulf
Bayer Aktiengesellschaft
Gil Joseph C.
Welsh Maurice J.
Whalen Lyndanne M.
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