Abstract: Thiocarbamyl derivatives, including thioureas and thiocarbamic esters derived from the reaction of an alkenyl isothiocyanate with an amine and alcohol or thio, respectively, have utility as an additive for hydrocarbons, particularly fuels and mineral lubricating oils whereby enhanced anticorrosion, oxidation inhibition and/or dispersancy activity is imparted to said hydrocarbons.

Abstract: A puncture-sealing tubeless pneumatic tire having an inner layer of soft, tacky, extensible sealant consisting of (1) at least one vinylidene-terminated liquid polymer and (2) at least one amine.

Abstract: There is disclosed a novel class of vulcanization accelerators, specifically compounds such as 2-(isopropylsulfinyl)-benzothiazole.

Abstract: A curable composition consisting essentially of(1) 100 parts by weight of a halogen-containing polymer,(2) 0.1 to 10 parts by weight of a substituted mono- or di-thiobiurea as a crosslinking agent having the formula ##STR1## wherein R.sup.1, R.sup.2 and X are as defined in claim 1 and (3) 0.5 to 50 parts by weight of a compound of a metal of Group II or IVa of the periodic table as an acid acceptor.

Abstract: A puncture-sealing tubeless pneumatic tire having an inner layer of soft, tacky, extensible sealant consisting of (1) at least one vinylidene-terminated liquid polymer and (2) at least one amine.

Abstract: Amine polymers are used to dewater suspensions of particulate matter in water. The polymers are synthesized by the reaction of a nitrile polymer such as polyacrylonitrile, an aminating agent, and a sulfur activator. The dewatering properties of these amine polymers can be beneficially employed to treat sewage sludge, silt laden water, industrial waste and the like.

Abstract: The present invention relates to a vulcanizable rubber composition improved in a sulfur blooming obtained by coagulatingly keeping a supersaturated sulfur within said rubber composition. For preventing said sulfur blooming, in the present invention, a surface active agent such as sodium or potassium ethylxanthate, sodium or potassium isopropylxanthate, dialkyldithiophosphoric acid, diphenylthiourea, mercaptobenzothiazole, diphenylthiocarbazone, sodium oleate, sodium stearate or octadecylamineacetate is added to a rubber composition obtained by compounding sulfur as a vulcanizing agent in the amount of 0.5 to 10 parts by weight in relation to 100 parts by weight of rubber which may be any of natural rubber, synthetic rubber and the mixtures thereof.

Abstract: A new polyvinyl(dialkylthiocarbamoylthio)acetate resin expressed by the formula ##STR1## (wherein R.sub.1 and R.sub.2 each represent hydrogen atom or an alkyl group of C.sub.1 -C.sub.5) is provided.Said resin has a superior heavy metals-removing performance and is insoluble in organic solvents and hence very useful as an agent for removing heavy metals.Said resin is prepared by reacting a tetraalkylthiuramdisulfide expressed by a formula ##STR2## (wherein R.sub.3, R.sub.4, R.sub.5 and R.sub.6 each represent hydrogen atom or an alkyl group of C.sub.1 -C.sub.5) with a vinyl acetate polymer on heating in a solvent.Said resin is used as an agent for removing heavy metals, alone or in admixture with an auxiliary agent such as active carbon.

Abstract: A cured or uncured chlorinated polyethylene composition comprising(A) chlorinated polyethylene,(B) a complex formed between hexamethylphosphoric triamide and a member selected from the group consisting of carboxylic acids, cyanuric acid, substituted or unsubstituted phenols, alcohols and metal salts, and(C) a member selected from the group consisting of (a) a mercaptotriazine, (b) a thiuram disulfide and (c) sulfur. And a process for curing chlorinated polyethylene, which comprises heating it in the presence of (B) and (C) at a temperature of about 100.degree. to about 200.degree. C.

Abstract: A cured or uncured chlorinated polyethylene composition free from hexamethyl-phosphoric triamide complex comprising (A) chlorinated polyethylene, (B) a mercaptotriazine as cross-linking agent, (C) a cross-linking accelerator selected from the group consisting of specified dithiocarbamic compounds, secondary and tertiary amines, and the carboxylates, mercaptothiazole salts, dithiocarbamates and dithiophosphates of said secondary and tertiary amines and the benzothiazylsulfenamides of said secondary amines, and (D) an acid acceptor of metal compounds; as well as a process for curing uncured chlorinated polyethylene which comprises heating same in the absence of hexamethylphosphoric triamide complex in the presence of (B), (C) and (C) at a temperature of about 120.degree. to about 200.degree. C.

Abstract: A puncture-sealing tubeless pneumatic tire having an inner layer of soft, tacky, extensible sealant consisting of (1) at least one vinylidene-terminated liquid polymer and (2) at least one amine.

Abstract: A vulcanizable rubber composition having an excellent adhesive property when vulcanized in contact with metals is obtained by compounding(a) 100 parts by weight of a raw rubber(b) from 0.5 to 10 parts by weight of a vulcanizing agent, and(c) from 0.01 to 1 part by weight (as metal content) of at least one metal compound selected from the class consisting of organic acid salts of titanium and molybdenum and organic complex compounds of titanium, molybdenum and cobalt.The vulcanizable rubber composition thus obtained is not susceptible to the oxidative deterioration in unvulcanized state during the storage.

Abstract: Disclosed is a sulfur-cured rubber article that has high resistance to reversion and low compression set which is post-modified to improve its fatigue life. The method involves introducing additional elemental sulfur in solution into the low sulfur-cured rubber article subsequent to curing.