摘要:
A fluoroelastomer composition which has beneficial utility in the rapid manufacture of cured fluoroelastomer articles having good strength and resistance to compression set can be prepared by blending the following components: (A) an elastomeric copolymer of vinylidene fluoride and another fluorine-containing monomer, and (B) as a vulcanization agent, a carboxylic acid ester of 4,4'-sulfonylidiphenol (for example, 4,4'-sulfonyldiphenol diacetate); and when making the cured articles, it is also preferred to add (C) a suitable metal compound such as a divalent metal oxide or hydroxide, and (D) a suitable accelerator, for example a certain type of quaternary phosphonium compound.
摘要:
Cyclic O,O,S - Triesters of phosphorodithioic acid are excellent accelerators of sulfur vulcanization at elevated temperatures, thereby making possible a considerable reduction in the cure time. Additionally, certain novel compounds of the above class and their preparation are disclosed.
摘要:
Resins comprising cross-linked copolymers of aromatic vinyl compounds having dithioic acid groups and the process for the preparation thereof are disclosed.
摘要:
Certain O,O,S - triesters of phosphorodithioic acid are excellent co-accelerators in the sulfur vulcanization of rubbers, especially EPDM rubbers, thereby making possible a considerable reduction in the cure time. Additionally, certain novel compounds of the above class and their preparation are disclosed.
摘要:
The specification relates to the vulcanization of neoprene by using certain 2-hydroxyalkyl N,N-dialkyldithiocarbamates as accelerators. The specification relates also to vulcanizates containing these accelerators.
摘要:
Two-component accelerator system for the sulfur vulcanization of rubber, one accelerator being 2-(morpholinodithio)-benzothiazole and a second accelerator being a compound such as benzothiazyl disulfide.