Patent GB-1045246-A (GB)
Title: Stabiliser compositions for chlorine-containing polymers
Inventor: PENNECK RICHARD JOHN
IPC: C08K5/10
Filed: 1964-04-25
Abstract: Chlorine-containing polymers are stabilized with a composition comprising metal salts of monoesters of a ,b -ethylenically unsaturated dicarboxylic acids in which the metals are zinc and at least two different metals selected from lithium, sodium or potassium, strontium, calcium and magnesium.  The compositions may also comprise epoxy compounds, polyhydric compounds, sulphur compounds, phosphites, benzophenones, benzotriazoles, pigments, fillers and lubricants.  The polymer may be a polymer of vinyl chloride, vinylidene chloride or a dichloroethylene, or a copolymer of such monomers with vinyl esters, vinyl ethers and acrylic, methacrylic, fumaric and maleic esters.  Many suitable stabilizer components are specified and examples describe compositions comprising vinyl chloride/vinyl acetate copolymers, vinyl chloride/dioctyl fumarate copolymers and (1) calcium, magnesium and zinc 2-ethylhexyl maleates; calcium, magnesium and zinc 2-ethylhexyl maleates, 2,2-dimethyl-1,3-propanediol, dilauryl thio dipropionate and (2 and 3) epoxy resins and (4) isooctyl epoxytallate; calcium, magnesium and zinc 2-ethylhexyl maleates, dilauryl thiodipropionate, epoxidized soya bean oil and (5) glyceryl monoricinoleate, (6) pentaerythritol, (7) sorbitan monostearate and (8) polyoxyethylene sorbitan monooleate; (9) strontium, magnesium and zinc 2-ethylhexyl maleates together with (10) epoxidized soya bean oil, (11) dimethyl butanediol and dilauryl thiodipropionate and (12) dimethyl propanediol, dilauryl thiodipropionate and epoxidized soya bean oil; (13) strontium butyl itaconate, magnesium and zinc 2-ethylhexyl maleates, glyceryl monoacetate, epoxidized soya bean oil and dilauryl thiodipropionate; calcium, magnesium and zinc 2-ethylhexyl maleates and (14) epoxidized soya bean oil, dilauryl thiodipropionate and 1,4-dihydroxymethyl cyclohexane, (17) dimethyl propanediol, dilauryl thio dipropionate and glycidyl methacrylate/acrylonitrile copolymer and (23) epoxidized linseed oil, dilauryl thiodipropionate and 2,2,4,4-tetramethyl-1,3-cyclobutane-diol; (15) strontium, sodium, magnesium and zinc 2-ethylhexyl maleates, dimethyl propanediol, dilauryl thio dipropionate and 3,4 - epoxy - 6 - methylcyclohexylmethyl 3,4 - epoxy - 6 - methyl cyclohexane carboxylate; (24) calcium n-decyl maleate, (25) calcium n-octyl maleate and (26) calcium n-heptyl maleate together with magnesium and zinc 2-ethylhexyl maleates, epoxidized linseed oil, dilauryl thiodipropionate and dimethyl propanediol; compositions comprising polyvinyl chloride, calcium n-heptyl maleate, zinc and magnesium 2-ethylhexyl maleates, dimethyl propanediol, epoxidized linseed oil and (18) dibenzyl sulphide, (19) dithiodipropionic acid, (20) S-benzyl thioglycollic acid, (21) bis-(n-dodecyloxyethyl) sulphide and (22) dibenzoyl disulphide; and (27) as (19) with diglycidyl ether of bisphenol A replacing epoxidized linseed oil; and compositions comprising vinyl chloride/vinyl alkyl ether copolymers and (16 and 28) calcium n-heptyl maleate, zinc and magnesium 2-ethylhexyl maleates, dimethyl propanediol, dilauryl thio dipropionate and epoxidized linseed oil.