Patent GB-675405-A (GB)
Title: Improvements in and relating to the stabilisation of halogenated organic products against heat and light deterioration
IPC: C08K5/1515
Filed: 1950-03-24
Abstract: A heat and light stabilizer for halogen-containing organic substances with a M.W. above 2000, e.g. polyvinyl chloride, after chlorinated polyvinyl chloride, copolymers of vinyl chloride with vinyl acetate, acrylonitrile, maleic anhydride, or styrene, chlorinated polyethylene, brominated polyisobutylene and polychloroprene or copolymers thereof, comprises a mixture of (1) a glycidyl ether with a 1,2-epoxy equivalency greater than one and (2) a carboxylic acid salt of strontium or cadmium.  Examples of (1) are the diglycidyl ethers of ethylene, propylene, trimethylene, butylene, diethylene, triethylene and dipropylene glycols and glycerol, the polyglycidol ethers of glycerol, diglycerol, erythritol, pentaglycerol, pentaerythritol, mannitol, sorbitol, polyallyl and polyvinyl alcohols, and dihydric phenols such as resorcinol, catechol, hydroquinone, bis-(4-hydroxyphenyl) - 2,2 - propane, - 1,1 - ethane, - 1,1 - isobutane, - 2,2 - butane, 4,41 - dihydroxy benzophenone, bis - (4 - hydroxy - 2-methylphenyl) - 2,2 - ropane, bis - (4-hydroxy - 2 - tertiary butyl phenyl) - 2,2 - propane, bis - (2 - dihydroxynaphthyl) - methane, and 1,5-dihydroxy naphthalene; examples describe their preparation by the reaction of glycerol, pentaerythritol, rescorcinol, and bisphenol with epichlorhydrin. Component (2) may be a cadmium or strontium salt of acetic, hexanoic, octanoic, lauric, palmitic, stearic, crotonic, oleic, linoleic, linolenic, benzoic, toluic, naphthenic, phthalic, adipic, maleic, chlorostearic, bromopalmitic, salicyclic, anthranilic or tryptophan acids.  The compositions, which may include dioctyl phthalate, tricresyl phosphate, chlorinated diphenyl, dibutyl sebacate, dyes, pigments or fillers, are prepared by hot milling and rolling into a sheet which is moulded at 160 DEG  C. or by mixing in a solution and evaporating the solvent.  Specifications 628,622 and 655,590 are referred to.ALSO:A heat and light stabilizer for halogen-containing organic substances with a M.W. above 2000 e.g. halogenated fats, train oils, mineral waxes or high-boiling hydrocarbons comprises a mixture of (1) a glycidyl ether with a 1, 2-epoxy equivalency of greater than one and (2) a carboxylic acid salt of strontium or cadmium.  Examples of (1) are the glycidyl ethers of ethylene, propylene, trimethylene, butylene, diethylene, triethylene and dipropylene glycols and glycerol, the polyglycidyl ethers of glycerol, diglycerol, erythritol, pentaglycerol, pentaerythritol, mannitol, sorbitol, polyallyl and polyvinyl alcohols, and of dihydric phenols such as resorcinol, catechol, hydroquinone, bis-(4-hydroxyphenyl)-2, 2-propane, 1, 1-isobutane and 2, 2-butane, 4, 41-dihydroxy benzophenone, bis-(4-hydroxy-2-methyl phenyl)-2, 2-propane, bis-(4-hydroxy-2-tertiarybutyl phenyl)-2, 2-propane, bis-(2-d hydroxynaphthyl)-mehtane, or 1, 5-dihydroxy naphthalene. Component (2) may be a cadmium or strontium salt of acetic, hexanoic, octanoic, lauric, palmitic, stearic, crotonic, oleic, linoleic, linolenic, benzoic, toluic, naphthenic, phthalic, adipic, maleic, chlorostearic, bromopalmitic, salicylic, anthranilic, or tryptophan acid.  The stabilized compositions may also include dioctyl phthalate, tricresyl phosphate chlorinated diphenyl, dibutyl sebacate, dyes, pigments and fillers. Specifications 628,622 and 655,590 are referred to.