Verfahren zur Verminderung des thermoplastischen Flusses von textilen Gebilden aus Polymerisaten bzw. Mischpolymerisaten von Vinylhalogeniden und/oder Vinylidenhalogeniden

摘要

Non-elastic halogen-containing polymers are converted into elastic halogen-containing polymers by reaction with a N,N1 dimethylol compound of the formula: wherein R, R1, R11 and R111 are the same or different and may be hydrogen or aliphatic, aromatic, araliphatic cycloaliphatic or heterocyclic radicals or in formula I, III, and IV R and R1 may be joined to form a ring as also may R11 and R111 in formula III; and n is O or an integer from 1 to 18 and m is an integer from 2 to 8. Specified polymers are polyvinyl and polyvinylidene chlorides, copolymers of vinyl chloride with vinyl acetate or vinylidene chloride, and chlorosulphonated polyethylene or polypropylene. The specified compounds can be used concurrently with sulphur and/or organic sulphur compounds together with vulcanisation accelerators such as amines, preferably polyamines, or their reaction products with ketones or aldehydes or reaction products of nitroso compounds with substances which contain at least one active H atom or methylene group. Other N, N1 dimethylol compounds may also be present. Reaction may be effected in the presence of fillers, dyestuffs, pigments, plasticisers and stabilisers e.g. various forms of carbon black, silica, titania, alumina, zirconia, chalk, mica, iron oxide, textile or glass fibres, and asbestos, Treatment is preferably effected by dispensing the polymer in a plasticiser, mixing in the treating agent, fillers and other additives and heating to effect cross-linking after shaping. It is also possible to treat shaped articles with a solution of the treating agent and then to heat the article. In Example 8 a chlorosulphonated polyethylene composition containing a cross-linking agent of the invention is cross-linked in situ on a fabric previously coated with a poly-2 -chlorobutadiene composition cross-linked with a similar agent to give an unreleasable bond between the two polymers. Optional ingredients incorporated in the specific examples of polymer compositions treated with a variety of the specified N-N1 -dimethylol compounds are, besides those mentioned above:- dioctyl phthalate, glycol dicaproate, dibutyl tin dilaurate and maleate, paraffin wax, cadmium barium laurate, epoxidised soya oil, benzene-sulphohydrazide, piperidine salt of pentamethylene dithiocarbamic acid, dioctyl adipate, cadmium selenide, barium sulphate, silicone oil, hydrazine, benzine-naphthenic oil, xylene, butyl acetate, methyl ethyl ketone, ethyl acetate, chlorinated rubber, magnesium oxide, graphite, tricresyl phosphate and 2,4-hydroxybenzophenone.