摘要:
Sulfur-coupled hydrocarbyl derived mercaptobenzothiazole adducts have been found to be effective multifunctional antiwear additives for fuels and lubricants.
摘要:
Polymers of methyl styrene produced from an isomer mixture having a high content of the para-isomer are halogenated, sulfonated or subjected to other substitution reactions.
摘要:
Zeolite supported, organometallic based catalyst composition are provided which are especially suitable for the polymerization of 1-olefins such as ethylene. Alkyltitanium and alkylchromium compounds such as tributylchromium and tetrabutyltitanium are reacted with ZSM-5 type zeolites to produce such novel catalysts.
摘要:
There is provided a method for the suspension polymerization of one or more styrenic monomers. This method involves increasing the amount of substantially water insoluble free radical initiator in the suspension after the conversion of the monomer has reached at least 50%. The temperature of the suspension is at least 110.degree. C. throughout the entire polymerization.
摘要:
A process for the hydrogenation of hydrocarbon materials having olefinic unsaturation and/or olefinic-aromatic unsaturation, and particularly wherein hydrogenation is carried out at relatively low catalyst levels and mild reaction conditions whereby olefinic bonds are reduced and, when components of the reaction mixture contain aromatic unsaturation, to effect selective hydrogenation of olefinic bonds, without substantial, if any, hydrogenation of aromatic unsaturation; said process comprising contacting such hydrocarbon materials under hydrogenation reaction conditions of temperature and pressure in the presence of bis(1,5-cyclooctadiene) nickel as the hydrogenation catalyst.
摘要:
A paper-polymer product as a fibrous, open web structure with polymer within the fiber structure of the cellulose fibers. The polymer is formed in-situ from a liquid, non-polar vinyl monomer such as p-chlorostyrene or p-methylstyrene. The open spaces of the fibrous web structure are substantially free from polymer.
摘要:
Rechargeable secondary battery comprising a cathode of a sheet loaded with graphite, an anode of a sheet containing high surface area carbon, and an electrolyte. The sheets can be prepared using a binder such as paper pulp and can be formed on paper making equipment.
摘要:
Blends of polyvinyl chloride and copolymers of p-methylstyrene and acrylonitrile exhibit high clarity compared to the blends of polyvinyl chloride and polystyrene.
摘要:
Zeolite supported, organochromium based catalyst compositions are provided which are especially suitable for the polymerization of 1-olefins such as ethylene. Pi-bonded organochromium [II] compounds such as chromocene (dicyclopentadienyl chromium) are reacted with ZSM-5 type zeolites to produce such novel catalysts.
摘要:
Blends of polystyrene, poly(p-methylstyrene) or copolymers of styrene and p-methylstyrene; and an A-B-A' p-methylstyrene-conjugated diene-styrene block copolymer containing, by weight of the block copolymer, about 5-40% p-methylstyrene, about 5-40% styrene, and about 20-80% conjugated diene, are disclosed.