Singh, A. K.; Puri, B. K.; Rawlley, R. K., Indian Journal of Chemistry, Section A: Inorganic, Physical, Theoretical and Analytical, 1989, vol. 28, # 1, p. 59 - 62
Singh, A. K.; Puri, B. K.; Rawlley, R. K., Indian Journal of Chemistry, Section A: Inorganic, Physical, Theoretical and Analytical, 1989, vol. 28, # 1, p. 59 - 62
Method of curing rubbers without forming nitrosamines
申请人:THE B.F. GOODRICH COMPANY
公开号:EP0591632A2
公开(公告)日:1994-04-13
Branched and cyclic N,N-dialkyldithiocarbamyl accelerators for the sulfur vulcanization of rubber have been found to generally perform as well as the corresponding straight chain N,N-dialkyldithiocarbamyl accelerators, but surprisingly do not produce detectable amounts of environmentally undesirable N-nitrosamines.
The branched N,N-alkyldithiocarbamyl accelerators are generally represented by the formula:
where R is a branched alkyl group, R' is an alkyl group which may or may not be branched or a cyclic alkyl group or an alkaryl or aryl group, X is another thiocarbamyl group of the same general structure, a primary alkylamino group, an alkylthio group, a 2-benzothiazyl group, or a metal ion, and n is an integer of from 1 to 6.
The cyclic dithiocarbamyl accelerators of the invention are generally represented by the formula
where X is another thiocarbamyl group of the same general structure, a primary alkylamino group, an alkylthio group, a 2-benzothiazyl group, or a metal ion, and n is an integer of from 1 to 6.