Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...
Patent
1984-05-04
1985-03-26
Foelak, Morton
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
521103, 521138, 521182, C08J 906
Patent
active
045074062
ABSTRACT:
Quaternary ammonium borohydrides of the formula ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 may be the same or different and each is selected from alkyl, alkenyl, cycloalkyl, aryl, alkaryl and aralkyl groups and R.sup.4 is selected from alkyl and alkenyl groups having from 1 to 30 carbon atoms, with the proviso that R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are not all alkyl or that R.sup.1, R.sup.2 or R.sup.3 is not benzyl when the remainder of R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are all methyl or ethyl. The new borohydrides are prepared by either mixing a borohydride salt and a quaternary ammonium salt in alkaline aqueous solution and extracting the resulting quaternary amine borohydride with an organic solvent or by reacting finely divided borohydride salt with an organic solution of quaternary ammonium salt. The new compounds are used for foaming polyester resins.
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Burton Thomas M.
Kucharska Helena Z.
Fiberglas Canada Inc.
Foelak Morton
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