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    • 5. 发明专利
    • Improvements in or relating to the manufacture of coating and plastic compositions
    • GB513891A
    • 1939-10-25
    • GB152938
    • 1938-01-17
    • DU PONTELLSWORTH KNOWLTON ELLINGBOEPAUL LAWRENCE SALZBERG
    • C08L15/02
    • 513,891. India-rubber compositions. DU PONT DE NEMOURS & CO., E. 1., ELLING- BOE, E. K., and SALZBERG, P. L. Jan. 17, 1938, No. 1529. [Class 70] Chlorinated rubber is stabilized by dissolving in a volatile solvent together with a non-volatile film-forming polymeric basic amino-nitrogencontaining substance and subsequently removing the solvent. The polymeric materials include generally macromolecular bodies, whether obtained directly by polymerization or by condensation and polymerization. Suitable materials are the polymeric amino-alcohol esters of x substitute of acrylic acids described in Specifications 475,131, and 475,132, [both in Group IV], and the resins obtained by condensing phenols or ureas, amines and forrraldehyde by treating polyvinyl - chloracetate with secondary aliphatic amines, by treating ketones with formaldehyde and aliphatic amines, by treating diarylquanidines with formaldehyde with or without amines, by treating epichlorhydrin with ammonia or amines and polymerizing in the presence of stannic chloride, by treating phenol-lignin with dimethylamine and formaldehyde, by treating polyvinyl ketones with ammonia or amines, by hydrogenating resins containing keto-groups in the presence of ammonia or amines, by treating proteins and aldehydes or ketones with amines and by treating triethanolamine with polycarboxylic acids.