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    • 10. 发明授权
    • Dye-bath treatment for polymeric articles
    • 聚合物文章的阴道治疗
    • US3502422A
    • 1970-03-24
    • US3502422D
    • 1966-02-17
    • UNIROYAL INC
    • MILLER ROBERTFARBER MILTONSHICHMAN DANIEL
    • C08L23/02C08L67/02D06P1/642D06P1/651D06P1/653D06P1/673D06P3/52D06P3/79D06P3/82D06P3/02D06P5/00
    • C08L23/10C08K5/09C08L23/02C08L39/00C08L39/08C08L67/02C08L2203/12C08L2205/16D06P1/6422D06P1/65125D06P1/65156D06P1/653D06P1/67316D06P3/521D06P3/791C08L2666/02C08L2666/04
    • 1,175,419. Dyeing modified polyolefins and polyesters. UNIROYAL Inc. 10 Feb., 1967 [17 Feb., 1966], No. 6481/67. Heading D1B Shaped articles of a minor proportion of a thermoplastic nitrogen containing basic dye receptor polymer and a major proportion of an inherently undyeable polyolefin or polyester are dyed by immersing the article in an aqueous dyebath containing an anionic dye and an acid, the amount of acid used being sufficient to cause at least a five-fold increase in dye uptake compared to when acid is absent and sufficient to obtain at least 55 % dyebath exhaustion, the acid being i) an aliphatic carboxylic acid having at least three carbon atoms, ii) an α-halo substituted aliphatic carboxylic acid, iii) a non-oxidising inorganic acid, iv) a compound which hydrolyses to an acid in water, v) acetic acid present in amounts of at least 400% o.w.f., vi) benzene sulphonic acid and vii) phenol. Preferably the article contains 0.5 to 10% of the thermoplastic nitrogen containing basic dye receptor polymer and the latter includes polyhexamethylene adipamide, polyhexamethylene sebacamide, polypyrrolidinone, polycaprolactam, polyenantholactam and copolymers of these, polyurethanes, polymer, polyvinylcarbazole, aniline-formaldehyde resins and polymers containing 2-vinylpyridine or 2- methyl-5-vinyl pyridine units. Polyolefins and polyesters used include polyethylene, polypropylene, poly(3-methyl-butene-1), poly(4- methyl-1-pentene) and their copolymers, polyethylene terephthalate, polyethylene terephthalate isophthalate, and poly(1,4-cyclohexylene-dimethylene terephthalate). Acid compounds used include nitrons, sulphurons, hydrochloric, propionic, hexanoic, glycolic, cyclohexylacttic, chloroacetic, dichloroacetic and α-bromopropionic acids and compounds which hydrolyse to give acids are aliphatic carboxylic acid alkyl esters, benzyl chloride, allyl bromide and p-nitrochlorobenzene.