GB588018A - Compositions comprising unsaturated polymeric materials and alkane dithiols - Google Patents

Abstract

Compositions comprise an organic solvent soluble polymeric organic material having a plurality of ethylenic linkages but otherwise free of groups which are reactive with the thiol group (see Group IV) and a monomeric alkane dithiol. The invention also includes the insolubilisation of the composition by exposure to an oxygen-containing atmosphere. Included in the unsaturated polymeric materials are partially polymerised drying oils, e.g., heat-bodied linseed and chinawood oils. A drier used in the varnish art, e.g., iron linoleate or resinate, may be added. The compositions may be compounded with pigments, fillers, synthetic resins, gums, cellulose derivatives and waxes and used for coatings, moulding compositions, adhesives and for printing ink ingredients.ALSO:Compositions comprise an organic solvent-soluble polymeric organic material having a plurality of ethylenic linkages but otherwise free of groups which are reactive with the thiol group and a monomeric alkane dithiol. The invention also includes the insolubilisation of the composition by exposure to an oxygen-containing atmosphere. A drier used in the varnish art, e.g. iron linoleate or resinate, may be added to the composition. Polymeric poly-unsaturated materials specified are polymers of allene, vinylcyclohexene, cyclopentadiene, 1.2-bis(vinyloxy)ethane, divinylformal, divinyl acetal and divinyl sulphide, the reaction products of polyhydric alcohols with polycarboxylic acids, polyethers, polysulphides, polyamide-polyesters and polyacetals prepared from components at least one of which contains an olefinic bond, heat-bodied linseed and chinawood oil, polymers of butadiene-1.3, isoprene and dimethyl-2.3-butadiene-1.3 and copolymers of the latter with styrene, pinene, isobutylene, camphene, monovinyl acetylene, vinyl ethinyl alkyl carbinols, vinyl acetate and chloride, acrolein, methyl vinyl ketone, acrylic and methacrylic acids and their esters, amides, imides and nitriles, alpha-chloro-acrylic acid and its esters, furylacrylic acid and its esters and dimethyl fumarate. Naturally occurring unsaturated polymers, e.g. natural rubber and gutta percha may also be used. Suitable alkane dithiols are 1.2-ethane dithiol, 1.3-propane dithiol, 1.8-octane dithiol, 1.6-octane dithiol and 1.10-octadecane dithiol. The compositions may be compounded with pigments, fillers, synthetic resins, gums, cellulose derivatives and waxes and used for coatings, moulding compositions, adhesives and for printing ink ingredients. In examples, cellulose acetate methacrylate (preparation described) and 2-ethyl-hexane-dithiol-1.3 are insolubilized by heating 1.10-decane dithiol is used to insolubilize ethylene glycol maleate resin, a resinous mixed glyceride of coconut oil acids and maleic acid, a resinous mixed glyceride of phthalic anhydride and methacrylic acid and a copolymer of butadiene and methyl methacrylate; and ethane dithiol to insolubilize butadiene-styrene and butadiene-acrylonitrile copolymers, natural rubber and polyfluoroprene.ALSO:Compositions comprise an organic solvent soluble polymeric organic material having a plurality of ethylenic linkages but otherwise free of groups which are reactive with the thiol group (see Group IV) and a monomeric alkane dithiol. The invention adso includes the insolubilization of the composition by exposure to an oxygen-containing atmosphere. Included in the unsaturated polymeric materials are natural rubber, gutta percha, and synthetic rubbers, e.g., polymers of butadiene 1.3 isoprene and dimethyl-2.3-butadiene-1.3 and copolymers thereof with other unsaturated organic compounds. A drier used in the varnish art, e.g., iron linoleate or resinate, may be added. The compositions may be compounded with pigments, fillers, synthetic resins, gums, cellulose derivatives and waxes and used for coatings, moulding compositions, adhesives and for printing ink ingredients.