公开(公告)号：US3796774A

公开(公告)日：1974-03-12

申请号：US3796774D

申请日：1971-10-08

Applicant: GAF CORP

Inventor： LU R ,  SCHULTZ H ,  FIELD N ,  LORENZ D

IPC: C08F261/06 ,  C08L27/06 ,  C08L51/00 ,  C08F29/56

CPC classification number: C08F261/06 ,  C08L27/06 ,  C08L51/003 ,  C08F212/08 ,  C08F220/14 ,  C08F220/44 ,  C08L2666/24

Abstract: A NOVEL GRAFT COPOLYMER COMPOSITION COMPRISING METHYL METHACRYLATE, ALONE OR TOGETHER WITH ONE OR MORE ADDITIONAL VINYL MONOMERS GRAFTED ONTO AN ALKYL VINYL ETHER POLYMER OR COPOLYMER. SUCH GRAFT COPOLYMERS ARE PRODUCED BY FREE RADICAL POLYMERIZATION. THE FRAFT COPOLYMER IS USEFUL AS A RESIN ADDITIVE, P PARTICULARLY, AS AN ADDITIVE FOR POLYVINYL CHLORIDE WHEREIN, IN A MINOR AMOUNT, THE GRAFT COPOLYMER IMPROVES THE EXTRUSION AND SIMILAR PROCESSING CHARACTERISTICS OF THE BASE RESIN.

公开(公告)号：US3817745A

公开(公告)日：1974-06-18

申请号：US20842471

申请日：1971-12-15

Applicant: GAF CORP

Inventor： COPES J ,  LORENZ D

IPC: B01J31/40 ,  B01J45/00 ,  C01G5/00 ,  C01G7/00 ,  C01G55/00 ,  C07F1/08 ,  C07F1/12 ,  C22B11/00

CPC classification number: C01G7/003 ,  B01J23/38 ,  B01J27/10 ,  B01J27/25 ,  B01J31/06 ,  B01J45/00 ,  C01G5/003 ,  C01G55/001 ,  C22B3/24 ,  Y02P10/234

Abstract: A PROCESS FOR RECOVERING NOBLE METALS FROM A SOLUTION CONTAINING NOBLE METAL IONS BY TREATING SAID SOLUTION WITH A COMPLEX OF A CROSS-LINKED POLYMERIC N-VINYLAMIDE AND A POLYHYDROXYARYL COMPOUND.