Abstract:
The present invention provides a polychlorotrifluoroethylene film having ultraviolet shielding ability, moisture resistance and small absolute values of thermal deformation rates. The present invention is a polychlorotrifluoroethylene film having an ultraviolet shield rate of not lower than 70%, a water vapor transmission rate of not higher than 1.00 g/m2·day and absolute values of thermal deformation rates after 30 minutes-heating at 150° C. of not higher than 5.0%.
Abstract translation:本发明提供具有紫外线屏蔽能力,耐湿性和热变形率绝对值小的聚氯三氟乙烯膜。 本发明是紫外线屏蔽率不低于70%,水蒸气透过率不高于1.00g / m 2·天的聚氯三氟乙烯膜和在150℃加热30分钟后的热变形率的绝对值 不高于5.0%。
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:
A blend of an E/X/Y copolymer, where E is ethylene, X is a vinyl ester, and Y is carbon monoxide or sulfur dioxide, with a polymer of vinyl halide or vinylidene halide is foamed and cured by dispersing in the blend a blowing agent and sulfur or a sulfur-releasing agent and heating the blend containing those additives at 100.degree.-180.degree. C. for a sufficient time to produce curing and foaming. This process can be run either continuously or batchwise in conventional equipment under conventional conditions in the presence of air. Plasticizers and other materials which often interfere with peroxide cures can be present in the process of this invention. The foamed and cured products have excellent physical properties and ozone resistance.
Abstract translation:E / X / Y共聚物的共混物,其中E是乙烯,X是乙烯基酯,Y是一氧化碳或二氧化硫,与乙烯基卤化物或亚乙烯基卤化物的聚合物发泡并通过在共混物a中分散而固化 发泡剂和硫或脱硫剂,并将含有这些添加剂的共混物在100-180℃下加热足够的时间以产生固化和发泡。 这种方法可以在常规设备中在常规条件下在空气存在下连续运行或分批运行。 常常干扰过氧化物固化的增塑剂和其它材料可以存在于本发明的方法中。 发泡和固化产品具有优异的物理性能和耐臭氧性。
Abstract:
The subject invention is a foamable composition based on a blend of a carbon monoxide- or sulfur dioxide-containing ethylene copolymer and a vinyl or vinylidene halide polymer, and the closed-cell foamed article produced therefrom.
Abstract:
The residual vinyl halide content of vinyl halide polymer is reduced by radiofrequency dielectric heating of a water-containing layer of particulate polymer over which is disposed a layer of material through which vinyl chloride can pass but which restricts the passage of water e.g. perforated plastic sheet.
Abstract:
The present invention relates to a method for coating fluoropolymers with a coating substance, by atom transfer radical polymerisation and subsequent processing whereas a fluoropolymer is contacted with a reaction mixture comprising at least one ligand selected from the group consisting of multichained and polycyclic amines, at least one metal salt wherein the metal is in a first oxidation state, at least one solvent, and the organic coating substance in monomer form.
Abstract:
A method of synthesizing a polymer membrane is described in which a polyvinylidene compound or an ethylene compound is blended with a solvent. The blend is applied on a supporting material, such as the outside of a hollow braid or the inside of a porous tube. Subsequently, the blend is cooled to thereby induce polymer membrane formation on the supporting material.