公开(公告)号：AU3115071A

公开(公告)日：1973-01-18

申请号：AU3115071

申请日：1971-07-13

Applicant: DEGUSSA

Inventor： ROCKTASCHEL GOTTFRIED DR ,  THURN FRIEDRICH DR ,  FLEISCHHAUER HORST ,  SCHWARZE WERNER DR ,  WESTLINNING HERMANN DR

IPC: C08L7/00 ,  C07F7/10 ,  C07F7/18 ,  C08K3/34 ,  C08K5/54 ,  C08K5/548 ,  C08K9/06 ,  C08L9/00 ,  C08C11/66

Abstract: 1355265 Sulphur-containing silanes; rubber compositions DEUTSCHE GOLD-UND SILBER-SCHEIDEANSTALT 19 July 1971 [18 July 1970] 33710/71 Headings C3S C3E C3P and C3Q Novel sulphur-containing silanes of the formula A-X-Z, wherein A denotes -SCN, R 2 S-CSS- or (R 3 ) 2 N-CSS-, R denotes H, -SH or -N(R 1 ) 2 , R 1 denotes H, phenyl or C 1-5 alkyl, R 2 denotes a monovalent C 1-15 hydrocarbon or heterocyclic radical, R 3 denotes H or a monovalent C 1-15 hydrocarbon radical, or both R 3 substituents together with the nitrogen atom form a heterocyclic radical, X denotes a C 3-18 divalent hydrocarbon radical optionally interrupted by O, S and/or N atoms and optionally substituted by halogen, pseudohalogen, phenyl, halophenyl, (C 1-3 alkyl)phenyl or di(C 1-3 alkyl)- phenyl, Z denotes -SiR 4 (OR 5 ) 2 , -Si(OR 5 ) 3 , and R 4 and R 5 independently denote -CH 3 , -CH 2 CH 3 , -CH 2 CH 2 CH 3 , -CH(CH 3 ) 2 or -CH 2 CH 2 CH 2 CH 3 , and other silanes of the formula A-X-Z, wherein A alternatively denotes R 2 O-CSS-, are prepared by reacting halogen -X-Z with A-Me or with A-H in the presence of an acid binding agent, wherein halogen denotes Cl, Br or I and Me denotes ammonium, hydrocarbon-substituted ammonium, an alkali or alkaline earth metal, Mn, Fe, Co, Ni, Zn, Cd, Cu or Ag. Examples describe the preparation of 3-thiocyanatopropyl triethoxysilane, 3 - triethoxysilyl - propyl. ethyl - xanthogenate, 3 - thiocyanatopropyl tri - n - butoxysilane, and 2 - diethylamino- 4 - mercapto - 6 - (3 - triethoxy - silyl - propyl)- thiotriazine. The above compounds may be used either as vulcanization agents in the crosslinking of elastomers or as a binding agency between inorganic fillers and organic polymers, the required effects occurring in the presence of residual moisture in the mix and in the presence or absence of conventional accelerators or activators. Examples describe the vulcanization of styrene-butadiene and natural rubbers using the above compounds as vulcanizing agents added to the mix or used to pre-treat silica fillers, the vulcanization being carried out in the presence of sulphur and the presence or absence of conventional additives such as zinc oxide, stearic acid, dibenzothiazyl disulphide and diphenyl guanidine.

公开(公告)号：CA975485A

公开(公告)日：1975-09-30

申请号：CA140375

申请日：1972-04-24

Applicant: BAYER AG ,  DEGUSSA

Inventor： KEMPERMANN THEO ,  EHOLZER ULRICH ,  WESTLINNING HERMANN ,  FLEISCHHAUER HORST

IPC: C08K5/00 ,  C08K5/43

Abstract: The invention relates to a vulcanisation accelerator combination and their use for a process for vulcanising natural and/or synthetic rubber made from halogen-free dienes. As vulcanisation accelerators triazines substituted in the 2, 4 and 6 positions in combination with at least one thiazole accelerator and optionally at least one thiuram accelerator are used. This accelerator combination obviate the disadvantage of the long cure time when using the triazine accelerator alone without loss of the advantage of the high moduli.

公开(公告)号：DE2134213A1

公开(公告)日：1973-01-25

申请号：DE2134213

申请日：1971-07-09

Applicant: DEGUSSA

Inventor： SCHWARZE WERNER DR ,  WESTLINNING HERMANN DR ,  WOLFF SIEGFRIED ,  FLEISCHHAUER HORST

IPC: C08K5/00 ,  C08C11/62

Abstract: 2-Thiocyanato-benzthiazole is used as accelerator in vulcanising natural or synthetic rubbers from halogen-free dienes, in the presence of S and/or cpds. supplying S by heating opt. under press. Premature vulcanisation is hindered, and amines are not liberated during vulcanisation as with sulphenamides of mercaptobenzthiazole.