Chemische Werke Huls Aktiengesellschaft

Chemische Werke Huels Aktiengesellschaft

Jorn Ruter

Roland Feinauer

Karl-Heinz Magosch

Klaus Burzin

Heinz Scholten

Hanns-Jorg Bax

Karl Heinz Magosch

A method for the uniform blending of additives into thermoplastic synthetic resins. A solution or finely divided dispersion of the additive is produced in a polymerizable cyclic ester of the general formula: ##STR1## wherein R represents respectively hydrogen or an alkyl group of 1-18 carbon atoms,

Process for uniformly blending additives into thermoplastic synthetic

Transparent, high molecular-weight copolyamides having high glass transition temperatures, based on:

Transparent copolyamides and their application to transparent, impact

Powder coating compositions, for coating metallic surfaces at high temperatures, comprising saturated, high-molecular thermoplastic copolyesters obtained by the condensation of terephthalic acid and other dicarboxylic acids with 1,4-butanediol and, optionally, other diols, and conventional auxiliary agents and additives.

Powder coating compositions

Textile fibers and articles having increased dye affinity are prepared by spinning a mixture of 85-97% by weight of poly(ethylene terephthalate) or poly(1,4-cyclohexylenedimethylene terephthalate) and 3-15% by weight of poly(ethylene dodecanedioate) and aftertreating the spun threads in a conventional spun threads in a conventional way.

Polyester threads and fibers having increased dye affinity

A process for the production of pol-(butylene terephthalate) of sufficiently high molecular weight for subsequent extrusion processing without the need of a solid phase post-condensation and at polycondensation pressures greater than now in general use. Polycondensation is carried out in the presence of small amounts of copolymers of an .alpha.-olefin or styrene with free or esterified maleic acid or anhydride.

Process for production of saturated, high-molecular weight polyesters

A process for the production of cyclic esters of undecanedioic acid with aliphatic diols comprising thermolyzing the corresponding linear polyesters derived from said acid and said diols under reduced pressure at temperatures of 200.degree.-300.degree. C in the presence of organotin and phosphonate catalysts, wherein the organotin catalyst is of the formula ##STR1## wherein R.sub.1 and R.sub.2 are alkyl of 1-18 carbon atoms, or aryl or aralkyl each of 6-36 carbon atoms, and the phosphonate is O,O-dialkyl-(3,5-di-tert-butyl-4-hydroxybenzyl)-phosphonate, the alkyl groups of which each contain 2-18 carbon atoms.

Process for the production of cyclic esters of undecanedioic acid

An improvement in the process of melt spinning ethylene terephthalate polyester to produce textile fibers with decreased pilling in the threads, fibers or fabrics made therefrom. The ethylene terephthalate is melt polymerized in the presence of a condensation catalyst to a final temperature of about 250.degree.-300.degree. C and a final pressure of less than 10 mm mercury to form an anhydrous melt. A vinyl copolymer having more than two carboxyl and/or hydroxyl groups is added to the melt polymerization at a concentration of about 0.005 to 2.0 percent referred to the dicarboxylic acid component. Melt spinning of the modified polyester is then carried out. The vinyl copolymer has the following general formula- ##STR1## where N IS AN INTEGER FROM 10 TO 10,000;

Low pilling polyester fibers and process for their manufacture

A powdery coating composition suitable for coating metallic surfaces at high temperatures, comprising powdery particles of a saturated, high-molecular weight thermoplastic polyester having an RSV value of about 0.4-1.2 dl./g. having homogeneously dispersed throughout said particles about 0.1-5% by weight, based on the weight of the polyester, of a flow agent of the formula ##STR1## wherein N IS AN INTEGER OF 0-6;

Powdery coating composition

Method for producing pilling-resistant fiber products of polyesters containing 0.05 - 5.0 molar percent, based on the acid component, of dicarboxylic acid groups which contain acetal groups and/or of a diol which contains acetal groups, wherein threads and fibers produced from such polyesters, as well as woven fabrics and knits made therefrom, are treated with aqueous acids.

Process for the preparation of pilling-resistant fiber products from

An improvement in the process of melt spinning ethylene terephthalate polyester to produce textile fibers with decreased pilling in the threads, fibers or fabrics made therefrom. The ethylene terephthalate is melt polymerized in the presence of a condensation catalyst to a final temperature of about 250.degree.- 300.degree.C and a final pressure of less than 10 mm mercury to form an anhydrous melt. A substituted cyclobutanedimethanol, preferably 2,4-diphenyl-cyclobutanedimethanol-1,3, is added to the melt-polymerization at a concentration of about 0.05 - 5 mole percent of the substituted cyclobutanedimethanol component. Melt spinning of the modified polyester is carried out and the fibers are irradiated with high energy light.

Method for preparing low pilling effect polyester fiber products

An improvement in the process of melt spinning ethylene terephthalate polyester to produce textile fibers with decreased pilling in the threads, fibers or fabrics made therefrom. The ethylene terephthalate is melt polymerized in the presence of a condensation catalyst to a final temperature of about 250.degree.C - 300.degree.C and a final pressure of less than 10 mm mercury to form an anhydrous melt. A substituted cyclobutanedecarboxylic acid, preferably .alpha.-truxillic acid, is added to the melt-polymerization at a concentration of about 0.05-5 molepercent of the acid component. Melt spinning of the modified polyester is carried out and the fibers are irradiated with high energy light.

Growing community of inventors

Marl, Germany

Jorn Ruter