Abstract:
The novel blend comprises:(A) from 1 to 99% by weight of at least one thermotropic-liquid-crystalline polyester and/or polyesteramide and(B) from 1 to 99% by weight of at least one sulfoxide group-containing polymer,in each case based on the total weight .SIGMA.�(A)+(B)!. Component (B) is a linear and/or branched polymer having a mean molecular weight M.sub.w in the range from 4,000 to 200,000 comprising recurring units of the formula �--F--S).sub.c --(F--SO).sub.d --!, where F, independently of one another, are simple or para-, meta- or ortho-linked arylene systems having 6 to 18 carbon atoms, preferably phenylene, naphthylene or biphenylene, where the sum c+d is 1, with the proviso that d is always .gtoreq.0.70. Component (A) is a thermotropic liquid-crystalline polymer having a mean molecular weight M.sub.w in the range from 10,000 to 200,000 g/mol and a transition temperature of >250.degree. C., and/or an amorphous thermotropic liquid-crystalline polymer having a mean molecular weight M.sub.w of from 10,000 to 200,000 g/mol and a glass transition temperature of >160.degree. C.
Abstract:
Binary and tertiary mixtures comprise (A) from 33 to 99% by weight of at least one polyarylene sulfone, (B) from 1 to 67% by weight of at least one polyarylene sulfoxide and/or (C) from 1 to 67% by weight of a polyarylene sulfide, where the sum of the components (A), (B) and (C) is always 100%. These mixtures can be processed to give homogeneous shaped parts, which are converted by the processing procedure into homogeneous polymer masses and only have the glass transition temperature of the polyarylene sulfone.
Abstract:
An abrasion-resistant fluoropolymer mixture comprising (A) from 75 to 99% by weight of a fluorocarbon polymer (B) from 1 to 25% by weight of an oxidized polyarylene sulfide and, based on the sum (A)+(B), (C) from 0 to 15% by weight of a filler, is used for the production of feed pipes for Bowden cables which are pressure-resistant and abrasion-resistant.
Abstract:
Molding composition based on fluoropolymers and process for producing foam material therefrom The invention relates to a molding composition based on fluoropolymers which additionally contain from 1 to 50% by weight of at least one polymer containing sulfoxide groups. The polymer containing sulfoxide groups comprises, in particular, polyarylene sulfoxide units of the formula: --(--C.sub.6 H.sub.4 --SO--)--.
Abstract:
In the process for the surface oxidation of polyarylene thioethers, the surface of the material to be oxidized is brought into contact with an ozone-containing gas or a liquid. The materials prepared by the process can be used in aircraft construction, automobile construction and chemical apparatus construction.