Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...
Patent
1979-12-10
1982-05-25
Cockeram, H. S.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
528 53, 564508, 564511, 564512, C08G 1814, C08G 1818
Patent
active
043317782
ABSTRACT:
The present invention relates to a process for the production of polyurethane plastics by reacting compounds containing at least two isocyanate-reactive hydrogen atoms and having a molecular weight in the range of from 400 to 10,000, polyisocyanates and, optionally, chain extenders having a molecular weight of from 32 to 400, foam stabilizers, water and/or organic blowing agents in the presence of catalysts containing tertiary nitrogen. These catalysts are characterized in that mixtures of (a) one or more cross-linking catalysts corresponding to the following general formula: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 which may be the same or different, represent C.sub.1 -C.sub.5 -alkyl radicals, preferably CH.sub.3 -- or C.sub.2 H.sub.5 radicals,
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Haas Peter
Kapps Manfred
Sommerfeld Claus-Dieter
Wagner Kuno
Bayer Aktiengesellschaft
Cockeram H. S.
Gil Joseph C.
Harsh Gene
Whalen Lyndanne M.
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