Covestro Deutschland Ag

Covestro Deutschalnd Ag

Bayer Intellectual Property Gmbh

Rolf Irnich

Jürgen Köcher

Thomas Michaelis

Zhao Xuehui

Shaojun Yang

Rafael Langer

Xuehui Zhao

The present invention relates to an article comprising expanded thermoplastic polyurethane as a substrate and a specific polyurethane urea coating on said substrate, as well as footwear, a process for producing the article and a use of a polyurethane urea dispersion/solution. It has been found that a polyurethane urea coating comprising polycarbonate structural units strongly binds to expanded TPU substrates and maintains the intrinsic properties of the expanded TPU.

Article comprising expanded TPU and a water based coating

Provided is a coating composition for the elastic coating of textile materials, comprising at least one blocked, isocyanate-terminated prepolymer (component A), the isocyanate-terminated prepolymer A) being prepared from a polyol component a) IN and an isocyanate component b), and the terminal isocyanate groups being blocked with dialkyl malonate and/or 3,5-dimethylpyrazole, and the isocyanate component b) containing &#x2265;70 wt % of at least one aliphatic polyisocyanate and &#x2264;30 wt % of at least one N aromatic polyisocyanate, based on the total weight of component b), at least one polyamine (component B) and &#x2264;30 wt %, based on the total mass of the coating composition, of at least one organic solvent. Further provided are a method for coating substrates with the coating composition, and also the substrate obtainable in such a method, and, further, the use of the coating composition for producing elastic coatings or elastic films.

Low-solvent coating systems for textiles

A process for the production of coated textiles comprises at least the steps of a) bringing a textile substrate into contact with an aqueous dispersion A comprising at least one salt and at least one modified cellulose, b) bringing a textile substrate into contact with an aqueous dispersion B comprising at least one polymer selected from the group consisting of polyurethane, polyacrylate and polybutadiene and c) precipitation of the polyurethane in or on the textile substrate. The salt of dispersion A is an organic onium salt of one or more elements of the fifth main group of the periodic table of the elements. The invention further relates to a coated textile obtainable by a process according to the invention and to the use of organic onium salts of one or more elements of the fifth main group of the periodic table of the elements for the production of coated textiles.

Process for the coating of textiles

A process for the production of coated textiles comprises the steps of: providing a textile substrate having a first side and a second side opposing the first side; contacting at least a part of the first side of the textile substrate with a spreadable polyurethane mechanical foam; applying a reduced pressure to at least a part of the second side of the textile substrate opposing the first side which has been contacted with the polyurethane mechanical foam; and solidifying the polyurethane mechanical foam with which the textile substrate has been contacted. The invention further relates to a coated textile obtainable by such a process, in particular a synthetic leather.

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Shanghai, China

Rolf Irnich