公开(公告)号：US3816323A

公开(公告)日：1974-06-11

申请号：US22872672

申请日：1972-02-23

Applicant: BAYER AG ,  DEGUSSA

Inventor： KEMPERMANN T ,  EHOLZER U

IPC: C08K5/00 ,  C08K5/378 ,  C08C11/54 ,  C08C11/56

CPC classification number: C08K5/0025 ,  C08K5/378 ,  C08L21/00

Abstract: This invention relates to a process for the vulcanization of rubbers produced from halogen-free dienes in the presence of sulphur and/or sulphur donors and a combination of vulcanization accelerators consisting of derivatives of 1,3,5-triazine disulphide, an accelerator of the mercapto group containing type and optionally an accelerator of the thiuram accelerator. By using this combination the disadvantage of a long heating time when using the 1,3,5-triazine disulphide alone will be obviate without reducing the high moduli.

公开(公告)号：US3844970A

公开(公告)日：1974-10-29

申请号：US24664672

申请日：1972-04-24

Applicant: BAYER AG ,  DEGUSSA

Inventor： KEMPERMANN T ,  EHOLZER U ,  WESTLINNING H ,  FLEISCHHAUER H

IPC: C08K5/00 ,  C08K5/43 ,  C08F45/48 ,  C08G51/48

CPC classification number: C08K5/0025 ,  C08K5/43 ,  C08L21/00

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.

Abstract translation: 本发明涉及硫化促进剂组合及其用于硫化由无卤二烯制成的天然和/或合成橡胶的方法的用途。 随着硫化促进剂在2,4和6位上与至少一种噻唑促进剂和任选的至少一种秋兰姆促进剂组合使用三嗪取代。 这种加速剂组合消除了单独使用三嗪促进剂时长固化时间的缺点，而不损失高模量的优点。

公开(公告)号：US3778419A

公开(公告)日：1973-12-11

申请号：US3778419D

申请日：1972-02-02

Applicant: BAYER AG

Inventor： SCHUBART R ,  ROOS E ,  EHOLZER U ,  KEMPERMANN T

IPC: C07F9/165 ,  C08K5/5398 ,  C08D9/00 ,  C08D13/28 ,  C08F27/06

CPC classification number: C07F9/1656 ,  C07F9/1652 ,  C08K5/5398 ,  C08L23/16

Abstract: A PROCESS FOR THE VULCANIZATION OF TERPOLYMERS OF ETHYLENE AND PROPYLENE, ALSO KNOWN AS EPDM RUBBERS, IS DESCRIBED. MORE PARTICULARLY VULCANIZATION ACCELERATORS FOR SUCH A PROCESS HAVING THE FORMULA

(R-O)2-P(=S)-S-CO-S-P(=S)(-O-R)2

IN WHICH THE RADICALS R REPRESENT THE SAME OR DIFFERENT STRAIGHT CHAINED OR BRANCHED LOWER ALKYL RADICALS, EACH OF WHICH MAY BE SUBSTITUTED BY A LOWER ALKOXY GROUP, ARE DESCRIBED.

公开(公告)号：US3748357A

公开(公告)日：1973-07-24

申请号：US3748357D

申请日：1970-06-08

Applicant: BAYER AG

Inventor： OERTEL H ,  EHOLZER U ,  ROSENDAHL F

IPC: C07D295/28 ,  C08F2/38 ,  C10L1/14 ,  C10L1/22 ,  C10L1/24 ,  C07C133/02

CPC classification number: C07D295/32 ,  C08F2/40 ,  C10L1/14 ,  C10L1/226 ,  C10L1/231 ,  C10L1/232 ,  C10L1/2412 ,  C10L1/2456

Abstract: A SEMICARBAZIDE OF THE FORMULA:

1-((R'')2-N-NH-CO-NH-(CH2)N-CH2-),3-R2,5-R1,HO-BENZENE

WHEREIN RR1 IS SELECTED FROM THE GROUP OF TERTIARY BUTYL, TERTIARY AMYL, TERTIARY OCTYL AND TERTIARY DODECYL; R2 IS ALKYL WITH 1 TO 12 CARBON ATOMS, PREFERABLY UNSUBSTITUTED ALKYL WITH 1 TO 4 CARBON ATOMS SUCH AS METHYL OR TERTIARY BUTYL; R'' IS ALKYL WITH 1 TO 12 CARBON ATOMS WHICH CAN BE SUBSTITUTED WITH A HYDROXYL, HALOGEN OR MERCAPTO GROUP, PREFERABLY ALKYL WITH 1 TO 4 CARBON ATOMS SUCH AS METHYL, HYDROXY ETHYL OR HYDROXY PROPYL; N IS AN INTEGER FROM 0 TO 12, PREFERABLY 0 TO 2; AND WITH THE PROVISO THAT THE -OH GROUP IS ORTHO OR R1. SUCH COMPOUNDS ARE USEFUL TO STABILIZE ISOCYANATES AGAINST DISCOLORATION DURING STORAGE.