Sulphonated, aromatic reaction products, processes for their manufacture and their use as substances having a tanning action
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United States of America Patent
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Jan 27, 1981
Issued Date -
N/A
app pub date -
Feb 12, 1979
filing date -
Apr 22, 1976
priority date (Note) -
Expired
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Abstract
The invention relates to sulphonated, aromatic reaction products as agents for tanning hides and leather. They are obtained by reacting a sulphonation product, which is previously formed from a diphenyl ether, a phenol and a sulphonating agent, with formaldehyde, with a reaction mixture of an aminoplast-forming agent and formaldehyde or with an aminoplast precondensate.
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