公开(公告)号：US3701815A

公开(公告)日：1972-10-31

申请号：US3701815D

申请日：1971-01-20

Applicant: UNION CARBIDE CORP

Inventor： MATZNER MARKUS ,  NOSHAY ALLEN ,  BARCLAY ROBERT JR

IPC: C08G77/445 ,  C08L67/02

CPC classification number: C08G77/445 ,  C08L67/02 ,  C08L83/00

Abstract: THIS INVENTION RELATES TO THERMOPLASTIC SILOXANE-POLYESTER BLOCK COPOLYMERS HAVING SIOLOXANE BLOCKS THAT ARE LINEAR AND CONTAIN DIHYDROCARBYLSIOLOXANE GROUPS AND POLYESTER BLOCKS THAT ARE LINEAR AND CONTAIN GROUPS DERIVED FROM AROMATIC DICARBOXYLIC ACIDS AND DIOLS. THE BLOCK COPOLYMERS OF THIS INVENTION ARE ELASTOMERIC OR RIGID, DEPENDING ON THEIR SPECIFIC COMPOSITION, EVEN THROUGH THERMOPLASTIC AND HAVE EXCEPTIONAL THERMAL AND OXIDATIVE STABILITY. THE BLOCK COPOLYMERS ARE USEFUL, FOR EXAMPLE, AS MOLDING RESINS AND EXTRUDING RESINS.