Rhone-poulenc-textile

Paul Couchoud

Yves Vaginay

Edouard Grimaud

The present invention relates to flameproof textile articles and to processes for obtaining the same. The textile articles consist or consist essentially of halogen-containing modacrylic polymers containing on their surface about 0.2% to 2% by weight of silica relative to the weight of the articles. They are obtained by treatment with an emulsion of a hydrogenopolysiloxane compound in the presence of a curing catalyst, followed by a heat treatment at a temperature which can vary between about 100.degree. and 160.degree. C. They are of great value in certain flameproof textile applications such as household furnishings and garments.

Flameproof textile articles based on halogen-containing modacrylic

Flame-resistant copolyesters are disclosed consisting or consisting essentially of from 85 to 99.5% of repeating units of the formula --CO--R--CO--O--R.sub.1 --O-- in which R is a divalent aromatic radical and R.sub.1 is a divalent aliphatic, cycloalkane radical or a mixture of two or several of these radicals; and least 0.5% of units of the formula: ##STR1## in which Me represents a metal such as Na, K, Ca or Zn, and Z represents a paraphenylene group or a divalent aliphatic grouping which contains from 1 to 18 carbon atoms, and may comprise heteroatoms, and is optionally branched, the branch being an aliphatic radical which may be halogenated, and comprises from 1 to 6 carbon atoms; and from 0 to 14.5% of units produced from a brominated compound of the formula: ##STR2## in which R.sub.5 is zero or represents a grouping: ##STR3## and A and A' represent either --CO--OX groups, where X=H or a lower alkyl group, or --X'OH groups, where X'=a--OCH.sub.2 --CH.sub.2 --.sub.n group, and n=1 to 10. These copolyesters may advantageously be used for producing textile threads, fibers and films.

Flame-resistant copolyesters containing phosphonic groups

The present invention relates to copolyesters having high flame resistance, and comprising essentially 85% to 99.5% of repeating units of the formula --CO--R--CO--O--R.sub.1 --O--, in which R is an aromatic radical, and R.sub.1 is a divalent aliphatic, cycloaliphatic or cyclanic radical, or a mixture of two or more of these radicals;

Copolyesters prepared from phosphorus compounds which can be shaped and

New compounds are disclosed for obtaining novel polymeric flameproofing agents. The former are diphenols of the general formula: ##STR1## where n=0 or 2. The latter are aromatic polyphenylphosphonates having recurring units of the general formula: ##STR2## in which n equals 0 or 2, and are obtained by reacting (I) with phenylphosphonyl chloride. The latter are especially useful for the flameproofing of polyester and finished or shaped articles based on polyester.

Compounds for obtaining polymeric flameproofing agents and the process

New compounds are disclosed for obtaining novel polymeric flameproofing agents. The former are diphenols of the general formula: ##STR1## where n = 0 or 2. The latter are aromatic polyphenylphosphonates having recurring units of the general formula: ##STR2## in which n equals 0 or 2, and are obtained by reacting (I) with phenylphosphonyl chloride. The latter are especially useful for the flameproofing of polyester and finished or shaped articles based on polyester.

Aromatic polyphenyl phosphonates

The present invention relates to shaped polyester articles which have good flame resistance. These articles comprise a polymethylene copolyester containing 60 to 95 mol % of terephthalate units and 5 to 40 mol % of isophthalate units and they contain 2 to 40% by weight of a phosphorus and/or halogen compound. They are employed in the textile industry and, in particular, in the furniture industry as well as in plastic films and materials for the building industry.

Shaped polyester articles having good flame resistance and process for

The invention relates to shaped structures, e.g., filaments, fibers or films based on poly(vinylidene fluoride) possessing good dyeing affinity for acid and metal-containing dyestuffs and comprising a fiber and filament forming mixture of poly(vinylidene fluoride) and a copolymer containing 80-95% by weight of methyl methacrylate and 5-20% by weight of a compound which contains a quaternary ammonium group and is copolymerizable with methyl methacrylate. The filaments and fibers according to the invention can advantageously be used in the textile field.

Shaped articles made from a mixture of polyvinylidene fluoride and a

Non-inflammable filaments having good physical characteristics are disclosed, wherein the filaments have a chlorine content of 25-40% by weight and a sticking temperature of at least 215.degree.C, and a shrinkage of less than 32% when subjected to steam at 130.degree.C in the free or unrestrained state. The filaments are formed by spinning a mixture of incompatible polymers, one polymer, used in an amount of 50-99% by weight, containing 79.5 to 58 weight percent of acrylonitrile units, 20-40 weight percent of vinylidene chloride units and 0.5 to 2 weight percent of a comonomer which enhances dyeability, and the other copolymer, used in an amount of from 1-50 weight percent, containing from 20-50 percent by weight of acrylonitrile units and 50-80 percent of vinylidene chloride units. The filaments may be used in textile applications, such as for clothing, furniture upholstery, and the like.

Non-inflammable filaments comprising acrylonitrile/vinylidene chloride

The invention relates to threads, fibers or films comprising polyvinylidene fluoride, with good dye affinity for plastosoluble and cationic dyestuffs. More particularly, the invention relates to threads, fibers or films formed of a mixture of vinylidene fluoride homopolymer and of a copolymer containing at least 60% by weight of methyl methacrylate units and 5 to 40% by weight of units of at least one acid ethylenic comonomer, copolymerizable with methyl methacrylate. The threads and fibers in accordance with the invention can be used in particular in the field of textiles.

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Dardilly, France

Paul Couchoud