L''Agriculture des Pays D?velopp?s 1800 ? nos jours

Compositions comprise a vinyl chloride polymer and 5 to 150 parts by weight per 100 parts of polymer of a polyallyl ester of a glycol bis-carboxylate ester HO2CRCO.OZO.OCRCO2H where R is the residue of an internal anhydride of a saturated aliphatic or monobenzenoid di- or tri-carboxylic acid and Z is the residue of a glycol of formula HOZOH, wherein the hydroxyl groups are separated by a chain of 2 to 6 atoms. The polymer may be polyvinyl chloride or a copolymer of vinyl chloride with up to 20% by weight of vinylidene chloride, vinylidene fluoride, vinyl acetate, styrene, methyl methacrylate or acrylonitrile. The esters may be derived from ethylene, trimethylene, 1,4-butylene, 1,6-hexylene and diethylene glycols, and succinic, glutaric, phthalic, trimellitic and hemimellitic anhydrides. The compositions may also comprise other plasticizers, e.g. dioctyl and di-(1,3,5-trimethylhexyl) phthalates; stabilizers, e.g. organo tin esters, phosphite esters, metal salts and phenols; and pigments and fillers. The compositions may be moulded, applied to substrates to form curable coating, or used as adhesives in which case minor proportions of radical polymerization catalysts, e.g. organic peroxides and azo compounds, may be present. Examples describe compositions comprising polyvinyl chloride, basic lead carbonate and (1) diallyl diethylene glycol bisphthalate and calcium stearate; (2) and (3) dioctyl phthalate, diallyl diethylene glycol bis-phthalate and t-butyl perbenzoate; (4) and (5) di-C7- 9 alkyl phthalates, diallyl diethylene glycol bis-trimellitate and t-butyl perbenzoate; (6) di-C7- 9 alkyl phthalates, diallyl diethylene glycol bis-trimellitate and dicumyl peroxide; and (7) di-C7- 9 alkyl phthalates, tetra-allyl diethylene glycol bis-trimellitate and t-butyl perbenzoate.ALSO:Substrates may be coated with compositions comprising a vinyl chloride polymer and 5 to 150 parts by weight per 100 parts of polymer of a polyallyl ester of a glycol bis carboxylate ester HO2CRCO.OZO.OCRCO2H where R is the residue of an internal anhydride of a saturated aliphatic or monobenzenoid di or tricarboxylic acid and Z is the residue of a glycol HOZOH wherein the hydroxyl groups are separated by a chain of 2 to 6 atoms, and the coatings cured by heating. The substrate may be a metal, e.g. steel, stainless steel, copper, tin, brass, aluminium or zinc, optionally pretreated with a phosphate or the like; thermoplastic polymers, e.g. nylon, polyester or polyvinyl chloride; cotton; wood; or glass. The nylon may be in the form of a woven fabric. The polymer may be polyvinyl chloride or a copolymer of vinyl chloride with up to 20 weight per cent of vinylidene chloride, vinylidene fluoride, vinyl acetate, styrene, methyl methacrylate or acrylonitrile. The esters may be derived from ethylene, trimethylene, 1, 4-butylene, 1, 6-hexylene and diethylene glycols, and succinic, glutaric, phthalic, trimellitic and hemimellitic anhydrides. The compositions may also comprise plasticizers, stabilizers, pigments, fillers and volatile solvents. In examples (2 and 3) mild steel strips are coated with compositions comprising polyvinyl chloride, dioctyl phthalate, diallyl diethylene glycol bis phthalate, basic lead carbonate and t butyl perbenzoate; nylon fabric is coated with compositions comprising polyvinyl chloride, C7-9 alkyl phthalates, diallyl diethylene glycol bis trimellitate, basic lead carbonate and (4 and 5) t. butyl perbenzoate and (6) dicumyl peroxide; and (7) polyethylene terephthalate fabric is coated with a composition comprising polyvinyl chloride, C7-9 alkyl phthalates, tetra allyl diethylene glycol bis trimellitate.