Basf Aktiengesellschaft

Wolfgang Schenk

Erhard Seiler

Gerhard Fahrbach

Franz Schmidt

Heinz Leitner

Alfred Oftring

Johannes P Dix

Hans-Uwe Schenck

Werner Streit

Hans J Wolf

Matthias Kummer

Joachim Stedefeder

Wilfried Kothe

Karl H Popp

Textile materials are pretreated in aqueous media by alkaline scouring and/or bleaching using an assistant comprising a compound of the general formula I ##STR1## where R is C.sub.6 -C.sub.10 -alkyl, X is H, Na, K or NR.sup.1 R.sup.2 R.sup.3 R.sup.4, and R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are each H, C.sub.1 -C.sub.4 -alkyl or --CH.sub.2 --CH.sub.2 --OH.

Pretreatment of textile materials: alkaline scour or bleach with

A method of processing regenerated liquors of polyacrylate, polyvinyl alcohol and carboxymethylcellulose (CMC) sizes for reuse, wherein the impurities are substantially removed, without noticeably changing the properties of the size, by constantly aerating the liquor and separating off the precipitate thereby formed.

Purification of regenerated sizing liquors

A process for sizing staple fiber yarns by applying an aqueous sizing liquor which contains an alkaline earth metal salt of a copolymer containing from 90 to 30% by weight of acrylic acid and/or methacrylic acid and from 10 to 70% by weight of acrylonitrile and/or methacrylonitrile, which copolymer has a viscosity of from 50 to 1,000 cp in 15% strength aqueous solution at 85.degree. C., and drying the treated yarns. The sized films obtained are moisture-insensitive and have good heat stability.

Water-soluble alkaline earth metal salts of polymers of acrylic acid,

Fabrics of which the warp is sized with water-soluble polymers of acrylic acid and/or their alkali metal salts or ammonium salts, are desized by treating the sized fabric with from 30 to 300 percent by weight of water, based on the dry weight of the fabric, and separating the resulting size solution from the fabric. The recovered size solution can be directly re-used for sizing.

Recovery of sizes

Impact-resistant thermoplastic molding compositions containing from 70 to 98 percent by weight of a polyoxymethylene and from 30 to 2 percent by weight of a block copolymer of the general formula A -- B -- A, wherein A is a polyalkylene oxide block and B is a diene polymer block.

Thermoplastic molding compositions of high impact resistance

Thermoplastic molding compositions based on polyoxymethylene and containing, to improve the impact resistance, a block copolymer of a diene polymer block B and at least one poly(alkylmethacrylate) block A.

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Plankstadt, Germany

Wolfgang Schenk