Basf Se Corporation

Guido Bilges

Elmar Poeselt

Guenter Scholz

Raphael Dabbous

Mihai Manitiu

Brad Joseph Martin

Birte Lahrmann

Günter Scholz

DianJun Chen

Sascha Mattfeld

Hendrik Kohake

Brad Martin

Valve for an inflatable flexible tube section comprising a tubular shaft, and also a valve base, connected adhesively and around the entire periphery to an end of the shaft, wherein the valve base has been manufactured from a thermoplastic polyurethane.

Valve for an inflatable hose section

The present invention relates to a process for producing a composition (I) at least comprising a compact thermoplastic polyurethane (P1), comprising the providing of at least one compact thermoplastic polyurethane (P1) or a reaction mixture for production of a compact thermoplastic polyurethane (R-P1), the adding of at least one compound (N) that has a conjugated, nitrogen-containing aromatic structure as nucleating agent to the at least one thermoplastic polyurethane (P1) or to the reaction mixture for production of a compact thermoplastic polyurethane (R-P1), wherein the compound (N) is a solid; and the mixing of the nucleating agent and the thermoplastic polyurethane (P1) or the reaction mixture (R-P1) to obtain a composition (I). The nucleating agent is used here in an amount in the range from 0.01% by weight to 2.0% by weight, based on the thermoplastic polyurethane (P1) or the reaction mixture (R-P1). Further relates the present composition comprising at least one compact thermoplastic polyurethane and at least one compound (N) that has a conjugated, nitrogen-containing aromatic structure as nucleating agent, wherein the compound (N) is a solid, and the use of the compounds mentioned as nucleating agents for a compact thermoplastic polyurethane.

Nucleating agent for compact thermoplastic polyurethanes

A thermoplastic polyurethane foamed article has a plurality of bubbles distributed throughout the thermoplastic polyurethane foamed article and comprises a thermoplastic polyurethane composition and an epoxy-functional styrene acrylic copolymer which are foamed in the presence of a blowing agent. The epoxy-functional styrene acrylic copolymer is present in an amount ranging from 0.1 to 5% of the total combined weight of the thermoplastic polyurethane composition and the epoxy-functional styrene acrylic copolymer. The thermoplastic polyurethane foamed article has an average diameter of the plurality of bubbles ranging from 50 to 120 &#x3bc;m with at least 75% of the plurality of bubbles having a diameter of less than 200 &#x3bc;m.

Thermoplastic polyurethane foamed articles comprising a thermoplastic polyurethane composition and an epoxy, functional styrene acrylic copolymer

Growing community of inventors

Lemfoerde, Germany

Guido Bilges