公开(公告)号：US10253180B2

公开(公告)日：2019-04-09

申请号：US15503229

申请日：2015-08-11

Applicant: Multibase SA

Inventor： Sylvain Boucard ,  Yann Gradelet

IPC: C08L75/04 ,  C08G77/12 ,  C08G77/20 ,  C08K3/04 ,  C08K3/36 ,  C08L9/06 ,  C08L33/00 ,  C08L25/08 ,  C08L83/00

Abstract: The invention relates to thermoplastic elastomer compositions comprising a blend of a thermoplastic urethane polymer and a silicone composition, and to a process for forming a vulcanized thermoplastic elastomer composition. The thermoplastic elastomer composition comprises a blend of a thermoplastic organic polymer comprising a urethane polymer and (B) a silicone composition comprising (B1) a silicone base comprising (B1a) a diorganopolysiloxane gum having an average of at least 2 alkenyl groups per molecule and (B1b) from 1 to 50% by weight based on the diorganopolysiloxane gum (B1a) of a reinforcing filler, and (B2) an organohydrido silicone compound which contains an average of at least 2 silicon-bonded hydrogen groups per molecule, wherein the weight ratio of the thermoplastic organic polymer (A) to the silicone composition (B) is in the range 55:45 to 80:20.

公开(公告)号：US10246580B2

公开(公告)日：2019-04-02

申请号：US15123278

申请日：2015-03-02

Applicant: Dow Corning Corporation ,  Multibase Inc. ,  Multibase SA

Inventor： Aurelie Arrigoni ,  Stephane Cornelis ,  Sandrine Faletto ,  Yann Gradelet ,  Jean De La Croix Habimana ,  Ted Hays ,  Ludovic Perrin ,  Patrick Prele

IPC: C08L23/04 ,  C08L23/12 ,  C08L23/16 ,  C08L51/00 ,  C08L83/04 ,  C08J3/00 ,  C08J3/22 ,  C08L87/00 ,  C08K3/34 ,  C08K5/00 ,  C08G77/20

Abstract: A process for increasing the scratch resistance of a composition comprising a thermoplastic organic polymer and a scratch resistant polymer composition per se. The process for increasing the scratch resistance of a composition comprising a thermoplastic organic polymer (P) comprises reactively mixing a thermoplastic organic polymer (A) and an organopolysiloxane (B) in a first step (I) at a temperature at which the thermoplastic organic polymer (A) and the organopolysiloxane (B) are in liquid phases to form a masterbatch. The organopolysiloxane (B) contains at least one functionality capable of reacting with the thermoplastic organic polymer (A) so that a copolymer of components (A) and (B) is formed in the masterbatch during the reactive mixing. The process further comprises a second step (II) of mixing the masterbatch with the composition comprising the thermoplastic organic polymer (P).