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US 5,330,675 AGranted
Use of polyacetals based on vinyl ethers and dihydroxy compounds in detergents and cleaners and polyacetals
AssigneeBASF SE
InventorsMatthias Kroner, Heinrich Hartmann, Richard Baur, Volker Schwendemann, Hans-Ulrich Jaeger, Johannes Perner
Life of this patent
Estimating the term…
Abstract
Polyacetals useful as reduced-phosphate or phosphate-free detergent and cleaner additives are obtainable by cationically initiated polyaddition of (a) divinyl ethers and (b) dihydroxy compounds and also, optionally, (c) monohydroxy compounds and have K values of from 8 to 100.
Claims8
A reduced-phosphate or phosphate-free detergent or cleaner formulation comprising 1 to 50% by weight of at least one surfactant and from 0.1 to 50% by weight, based on said detergent or cleaner formulation of polyacetals obtained by cationically initiated polyaddition of
- (a) divinyl ethers and
- (b) dihydroxy compounds and also, optionally,
- (c) monohydroxy compounds, the molar ratio of (a):(b) being from 2:1 to 1.001:1 and the molar ratio of the vinyl ether groups in (a) to the sums total of the hydroxyl groups in (b) and (c) being from 2:1 to 1:1, said polyacetals having K values, determined by the method of H. Fikentscher at 25.degree. C. in tetrahydrofuran at a polyacetal concentration of 1% by weight, of from 8 to 100.
Dependencies are inferred from the claim text.