Release agent for urethane foam molding
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United States of America Patent
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Nov 13, 1990
Issued Date -
N/A
app pub date -
Sep 11, 1989
filing date -
Dec 22, 1986
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A novel aqueous release agent is described, which contains as release-active subtances oil and/or wax emulsified in water as the carrier and which also contains as a further release-active substance one or more aliphatic primary, secondary and/or tertiary amines with at least one C.sub.12 -C.sub.24 alkyl radical and one or more ammonium salts as the emulsifier for the amine or amines. The invention is based on the surprising finding that hydrophobic amines (so-called fatty amines) are release-active substances. It has also surprisingly been found according to the invention that when using ammonium salts as the emulsifier, mould removal characteristics are not only impaired, but often even improved, which is not the case with conventional emulsifiers. The release agent according to the invention is particularly suitable in processes for producing polyurethane foam articles.
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