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 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 3,5-dimercapto-1,2,4-triazole compound defined in claim 1 as a crosslinking agent,(b) 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 process for continuously producing epichlorohydrin which comprises reacting chlorine and allyl chloride in an aqueous medium, neutralizing and saponifying the resulting hydrochloric acid-acidified solution containing glycerol dichlorohydrin with an alkali to form a solution containing epichlorohydrin, and separating epichlorohydrin from the resulting solution; wherein(1) the neutralization and saponification are performed in separately provided neutralization and saponification zones,(2) a slurry containing mainly calcium carbonate and calcium hydroxide is separated from the residual slurry left after the separation of epichlorohydrin, and(3) the neutralization and saponification reactions are carried out while recycling the separated slurry containing calcium carbonate and calcium hydroxide into the neutralization zone.
Abstract:
An improved process for preparing prepolymers or precopolymers of diallyl phthalate in a solid state from a prepolymer or precopolymer phase separated by the liquid phase extraction in a liquid state of fluidity and containing 10-30% by weight of the extractant, which comprises forming the prepolymer or precopolymer phase in a liquid state of fluidity and containing the extractant into a sheetlike form prior to solidifying it by cooling, heating prepolymer or precopolymer phase under foaming conditions accompanied by the evaporation of the extractant, and thereafter solidifying the prepolymer or precopolymer.
Abstract:
A diallyl phthalate resin-containing aqueous emulsion containing an aqueous emulsion of a diallyl phthalate resin of a rate of polymerization of 30 - 75 weight % consisting of 50 - 100 weight % of diallyl phthalate and 50 - 0 weight % of an alkyl acrylate, and an aqueous emulsion of a thermosetting vinyl resin consisting of 10 - 1 weight % of a vinyl compound containing a thermosetting functional group and 90 - 99 weight % of a vinyl compound not containing a thermosetting functional group, the content of said diallyl phthalate resin component to said thermosetting vinyl resin component being in a proportion of 10 - 70 weight % of the former to 90 - 30 weight % of the latter.
Abstract:
A method for the polymerization of vicinal alkylene oxides using a polymerization catalyst which is the reaction product of an organotin compound (A) with an esterified product (B), the organotin compound (A) containing at least one tin-to-carbon bond in its molecule, and the esterified product (B) being a completely or partially esterified product of oxyacid of phosphorus or derivative thereof, or a combination of reactants capable of forming such ester or derivative.