Rohm Gmbh

Zimmer Aktiengesellschaft

Roehm Gmbh Chemische Fabrik

Lurgi Zimmer Aktiengesellschaft

Rohm Gmbh Chemische Fabrik

Ronm Gmbh

Werner Ude

Joachim Knebel

Guenter Schroeder

Siegmund Besecke

Helmut Schwind

Wolfgang Janas

Dietmar Wandel

Winfried Wunderlich

Achim Riemann

Werner Mrose

Joachim Cziollek

Manfred Krieg

Peter J Arndt

Klaus Langerbeins

Volker Kerscher

Thomas Kehr

Norbert Rau

Gunter Schroder

Alexander Klein

Klaus Gottmann

Bernd Kretschmann

Ingo Cordes

Joachim Vetter

Peter-Joseph Arndt

Guenther Schroeder

Hermann Siegert

Sigmund Besecke

HMLS-fibers made of polyester and a spin-stretch process for its production

The present invention relates to a method for the manufacture of synthetic fibers from a melt mixture of fiber forming matrix polymers, wherein at least one second amorphous additive polymer, which is immiscible with the fiber forming matrix polymer, is added to the fiber forming matrix polymers in a quantity of 0.05-5 wt % (with reference to the total weight of fiber forming matrix polymer and the additive copolymer). The additive polymer is obtained by multiple initiation. Furthermore, the present invention also relates to the synthetic fibers produced by the method.

Method for the manufacture of synthetic fibers from a melt mixture based on fiber forming polymers

High strength polyester fibers comprising from 0.1 to 2.0 by weight of an incompatible, thermoplastic amorphous, polymeric additive.

High-strength polyester threads and method for producing the same

Polyester-staple fibres and method for the production thereof

The invention relates to a method of obtaining water-free 2-trimethylammoniumethyl methacrylate chloride (TMAC) characterized in that an aqueous TMAC solution is subjected to the following operations:

Method of obtaining water-free 2-trimethylammoniumethyl methacrylate

Described is a process for producing (meth)acrylates with Formula (I) ##STR1## with R.sub.1 is H or CH.sub.3, and A and B are each independently unbranched or branched alkylene groups with 2 to 5 C atoms, comprising the step of reacting a (meth)acrylate of the Formula (II), ##STR2## wherein R.sub.2 is alkyl especially with 1 to 4 C atoms and R.sub.1 is as defined above, with an alcohol of the Formula (III) ##STR3## wherein A and B are as defined above in the presence of an alkali earth catalyst or alkaline earth metal catalyst or a mixture thereof.

Process for the production of terminally nitrogen heterocycle

Rigid foamed polymethacrylimide synthetic resin containing from 0.1 to 10 percent by weight of electrically conductive particles such as conductive carbon black exhibit improved properties when used in rapidly flowing streams of gases, are particularly suitable for use as a core material in laminates for aircraft construction, and are prepared by heating a copolymer of methacrylic acid and methyacrylonitrile containing a blowing agent and conductive particles.

Hard foam cores for laminates

What are disclosed are aromatic polyethers which are resistant to high temperature, having a reduced viscosity greater than 0.25 dl/g and a repeating structural unit

Temperature resistant aromatic polyethers

A method for making aromatic bisphenols such as 9,9-bis-(4-hydroxyphenyl)fluorene by reacting an aromatic ketone, for example a diaryl ketone or diaryl diketone, with a phenol in the present of an insoluble strongly acidic cationic ion exchange resin as an acidic condensation catalyst, which latter may be used in the presence of a co-catalyst containing sulfur.

Method for making aromatic bisphenols

High-temperature-resistant, thermoplastically processable polyarylene ethers with repeating structural units of the general formula ##STR1## wherein A represents 4,4'- or 4,4'-benzophenone units of the formula ##STR2## with z being 0 or 1, B represents 9,9-bis(4'-phenyl)fluorene units of the formula ##STR3## and C represents 2,2-bis(4-phenyl)propane units of the formula ##STR4## which are linked to one another in etherlike fashion through oxygen atoms, the composition of the polyarylene ethers being determined by m and n, the molar ratio of which ranges from 30:70 to 90:10, and wherein the sequence of the segments containing B or C may be random.

Thermoplastic polyarylene ethers

A process for the preparation of (meth)acrylamidomethylphosphonic acid diesters of formula I:

Method of preparing N-methylphosphonic acid diesters of acrylic and

Methods for making tertiary phosphine oxides from the corresponding tertiary phosphine sulfides by reacting the latter with sulfuric acid and/or organic sulfonic acids at temperatures from 70.degree. C. to 200.degree. C.

Methods for making tertiary phosphine oxides

Branched phosphorus-containing polyarylene ethers comprising repeating units of the structure ##STR1## wherein q and z are 0 or 1; and

Phosphorus-containing polyarylene ethers

Compounds of the formula ##STR1## wherein R is lower alkyl or aryl, Y is oxygen or sulfur, m is 0 or 1, Ar is arylene, and X is halogen, methyl, or aryloxy, or polymers containing repeating units of this kind are prepared from a compound R--P(Y).sub.r Cl.sub.2, where r is 0 or 1 but is never greater than m, by reaction with one or two molar parts of a compound H--ArX in the presence of a Friedel-Crafts catalyst.

Method for making aromatic phosphorus compounds

A method for making resinous phosphorus-containing polyarylene ethers of the structure ##STR1## wherein R taken alone is hydrogen or R  R taken together are a covalent single bond, oxygen, sulfur, or a sulfonyl, carbonyl, methylene or isopropylidene bridge;

Growing community of inventors

Darmstadt, Germany

Werner Ude