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US 2003/0113285 A1Published application
Polyurethane and the use thereof for modifying rheological properties
AssigneeBASF SE
InventorsHelmut Meffert, Son Nguyen Kim
Life of this patent
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Abstract
A polyurethane which contains, as incorporated units, a) at least one diisocyanate, b) at least one polyether having two active hydrogen atoms per molecule and c) at least one compound of the formula I R1—Z1 (I) where R1 is C8- to C30-alkyl, C8- to C30-alkenyl, aryl-C6-C22-alkyl or aryl-C6-C22-alkenyl, the alkyl group having 1, 2, 3 or 4 nonneighboring double bonds, and Z1 is OH, SH or NHR2, R2 being hydrogen, C1- to C6-alkyl or C5- to C8-cycloalkyl, and its use are described.
Claims7
The use of at least one polyurethane which contains, as incorporated units,
- a) at least one diisocyanate,
- b) at least one polytetrahydrofuran having two active hydrogen atoms per molecule and
- c) at least one compound of the formula I
- R1—Z1 (I)
- where
- R1 is C8- to C30-alkyl, C8- to C30-alkenyl, aryl-C6-C22-alkyl or aryl-C6-C22-alkenyl, the alkenyl groups having 1, 2, 3 or 4 nonneighboring double bonds, and
- Z1 is OH, SH or NHR2, where R2 is hydrogen, C1- to C6-alkyl or C5- to C8-cycloalkyl
- and additionally at least one component which is selected from
- d) polysiloxanes having at least two active hydrogen atoms per molecule,
- e) compounds which differ from a) to d), have a molecular weight of from 56 to 600 and contain two active hydrogen atoms per molecule and mixtures thereof,
- as a component of a homogeneous or heterogeneous composition which contains at least one water-soluble compound liquid at 20° C. for modifying the rheological properties of this composition.
8 more elements
Dependencies are inferred from the claim text.