HYDROGENATED BLOCK COPOLYMERS AND ENGINEERING THERMOPLASTIC RESINS

A process for the preparation of a composition containing a partially hydrogenated block copolymer, characterized in that (a) 4 to 40 parts by weight of a partially hydrogenated block copolymer comprising at least two terminal polymer a blocks of a monoalkenyl- sand having an average molecular weight of 5,000 to 125,000, and at least one b block of intermediate polymer of a conjugated diene having an average molecular weight of 10,000 to 300,000, wherein the terminal polymer a blocks constitute from 8 to 55% in weight of the block copolymer, and not more than 25% of the arene double bonds of the polymer a blocks, and at least 80% of the aliphatic double bonds of the polymer b blocks, have been reduced by hydrogenation, they mix, at a treatment temperature between 150ºC and 400º c, with (b) a crystalline halogenated thermoplastic polymer having a melting point of more than 1º 20º c, and with 5 to 48 parts by weight of at least one thermoplastic resin for different engineering selected from the group consisting of polyamides, polyolefins, thermoplastic polyesters, acetal resins; polyurethane thermoplastics, polycarbonates, poly (aryl ethers), aromatic polysulfones, and nitrile resins, the weight ratio of the halogenated polymer to the thermoplastic resin for engineering other than greater than 1: 1, so that a polyblend is formed in the that at least two of the polymers form at least partial interlaced continuous lattices with one another. (Machine-translation by Google Translate, not legally binding)