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US 10,501,596 B2Granted
Hybrid systems consisting of foamed thermoplastic elastomers and polyurethanes
AssigneeBASF SE
InventorsFrank Prissok, Markus Schuette, Frank Braun
Life of this patent
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Abstract
The present invention relates to a hybrid material comprising a matrix of polyurethane and foamed particles of thermoplastic polyurethane comprised therein and also a process for producing such hybrid materials and the use of these hybrid materials as bicycle saddles, upholstery and shoe soles.
Claims17
A process, comprising:
- (1) mixing the following components:
- a) a polyisocyanate,
- b) a compound having hydrogen atoms which are reactive toward isocyanates, and
- c) foamed particles having a closed skin, which are expanded particles (c″) of thermoplastic polyurethane,
- and optionally,
- d) a chain extender and/or a crosslinker,
- e) a catalyst,
- f) an additional blowing agent, and
- g) a further additive,
- to obtain a mixture;
- (2) reacting the mixture, to form a hybrid material comprising a matrix of polyurethane having the foamed particles distributed therein, wherein components a), b), and, if present, d) to g) form the matrix;
- wherein the matrix has a density of from 0.1 to 0.8 g/cm3;
- and
- (3) preparing a shoe sole comprising said hybrid material.
11 more elements
A process, comprising:
- (1) mixing the following components:
- a) a polyisocyanate,
- b) a compound having hydrogen atoms which are reactive toward isocyanates, and
- c) foamed particles having a closed skin, which are expanded particles (c″) of thermoplastic polyurethane,
- and optionally,
- d) a chain extender and/or a crosslinker,
- e) a catalyst,
- f) an additional blowing agent, and
- g) a further additive,
- to obtain a mixture;
- (2) reacting the mixture, to form a hybrid material comprising a matrix of polyurethane having the foamed particles distributed therein, wherein components a), b), and, if present, d) to g) form the matrix;
- wherein the matrix has a density of from 0.1 to 0.8 g/cm3;
- and
- (2) preparing an article comprising said hybrid material, wherein said article is upholstery, a bicycle saddle, or a surfacing for a playground, an athletic track, a playing field, or a sports hall.
11 more elements
Dependencies are inferred from the claim text.