Polyacetals, preparation thereof from dialdehydes and polyolcarboxylic acids, and use of same

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United States of America Patent

PATENT NO 4816553
SERIAL NO

07156686

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Abstract

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Polyacetals obtainable by reaction of (a) a dialdehyde of the formula OHC--A.sub.n --CHO where A=C.sub.1 -C.sub.4 -alkylene or ##STR1## and n is 0 or 1, is reacted with (b) a polycarboxylic acid of 5 to 7 carbon atoms which contains not less than 3 OH groups, in a molar ratio (a):(b) of 1:0.25 to 4 in an aqueous medium in the presence of an acid catalyst, are used as additives in washing agents and as complexing agents for heavy metal ions.

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Patent Owner(s)

Patent OwnerAddress
BASF AKTIENGESELLSCHAFT 6700 LUDWIGSHAFEN RHEINLAND-PFALZ FED REP OF GERMANYNot Provided

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Baur, Richard Mutterstadt, DE 133 1818
Diessel, Paul Mutterstadt, DE 16 304
Fikentscher, Rolf Ludwigshafen, DE 50 393
Oftring, Alfred Ludwigshafen, DE 111 850
Perner, Johannes Neustadt, DE 44 533
Richter, Felix Bruehl, DE 13 152
Trieselt, Wolfgang Ludwigshafen, DE 52 981
Winkler, Ekhard Mutterstadt, DE 17 211

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