Inventa Ag Fur Forschung Und Patentverwertung Zurich

Inventa Ag Fur Forschung Und Patentverwertung

Wolfgang Griehl

Eduard Schmid

Marcel Capaul

Peter Schaefer

Max Maschek

Peter Meier

Filaments of a copolyamide which is derived from at least three polyamide-forming, unbranched, saturated, randomly distributed monomer components, having an average amide group frequency of one --CONH-- to 6.4 to 7.4 --CH.sub.2 -- and in which each of said monomer components is present in an amount of 10 to 60 mol %, based on the number of moles of all said components, and the sum of the mole % amounts of all monomer components is 100, said copolyamide having a melting point of less than 155.degree. C. A method of making such filaments is also disclosed.

Process for ternary polyamide filaments

Polyamides are described which are useful for injection molding and which are produced by the polycondensation of (a) a diaminodicyclohexane or a diaminodicyclohexylalkane, (b) a polyamide-forming aromatic dicarboxylic acid, and (c) an aliphatic dicarboxylic acid-diamine mixture or salt thereof.

Method for the manufacture of glass clear transparent polyamide

Polyamides are described which are useful for injection molding and which are produced by the polycondensation of (a) a diaminodicyclohexane or a diaminodicyclohexylalkane, (b) a polyamide-forming aromatic dicarboxylic acid of more than 9 carbon atoms, and (c) an .omega.-amino-acid, a lactam of more than 9 carbon atoms, or an aliphatic dicarboxylic acid-diamine mixture or salt thereof.

Injection moldable glass clear transparent polyamide

Ternary polyamide filaments

The present invention provides for a novel fiber-reinforced cement-like material which is characterized by having short polyvinyl alcohol fibers in an amount of at least 2 volume % based on the total volume of said material. These fibers have an elongation at break of between about 4 and 8% and a modulus of more than 130 g/dtex. A process for the preparation of said material is also disclosed.

Fiber-reinforced cement-like material

A process is disclosed for treating polyester material with at least one N-glycidylimide compound which results in reducing the terminal carboxyl group content of the polyester material.

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Chur, Switzerland

Wolfgang Griehl