公开(公告)号：US3803060A

公开(公告)日：1974-04-09

申请号：US21823972

申请日：1972-01-17

Applicant: BAYER AG

Inventor： ROOS E ,  KEMPERMANN T ,  ABELE M ,  DAMMANN G

IPC: C08J9/10 ,  C08F47/10 ,  C08C17/10 ,  C08G22/44

CPC classification number: C08J9/103 ,  Y10S264/05 ,  Y10S521/909

Abstract: Aromatic sulphinic acids and their salts are used as activators for lowering the decomposition temperature of azodicarbonamide, which have a higher activity than the conventional auxiliary blowing agents. Moreover, no premature liberation of gas takes place.

公开(公告)号：BR7200259D0

公开(公告)日：1973-05-24

申请号：BR25972

申请日：1972-01-17

Applicant: BAYER AG

Inventor： ROSS E ,  KEMPERMANN T ,  ABELE M ,  DAMMANN G

IPC: C08J9/10 ,  C08D13/10

Abstract: 1380961 Azodicarbonamide/sulphinic acid or salt as blowing agents BAYER AG 18 Jan 1972 [18 Jan 1971] 2281/72 Headings C3C and C3R Cellular natural or synthetic rubber or synthetic resins are made using as blowing agent azodicarbonamide together with an activator which is an aromatic sulphinic acid or salt of Formula (I) where M is H, a metal or an ammonium radical which may be substituted, n is the valency of M, and R 1-5 are H, C 1-4 alkyl or halogen. The polymer may be derived from butadiene, chlorobutadiene, dimethylbutadiene, isoprene, styrene, α-methylstyrene, acrylonitrile, methacylonitrile, acrylates, methacrylates, ethylene, propylene, vinyl chloride, and/or vinyl acetate; or may be a polyurethane. The activator may be a benzene sulphinate or sodium, zinc, lead cadmium, magnesium; a p-chlorobenzene sulphinate of zinc or sodium; a toluene sulphinate of cadmium or sodium; or p-chlorobenzene sulphinic acid.