摘要:
A method for removing oxides of nitrogen from gases and liquids by contacting a NO.sub.x containing gas or liquid with a polyarylene thioether filter material and a solid oxidizing agent having an electron potential greater than 0.96 V, wherein the solid oxidizing agent oxidizes NO into NO.sub.2 which is removed by the polyarylene thioether filter material.
摘要:
A foamed polyarylene sulfide according to the invention has a density which is reduced by at least 50% compared with the theoretical density of nonfoamed material, and is expediently produced by subjecting a polyarylene sulfoxide as such or a mixture of one or more polyarylene sulfides with a polyarylene sulfoxide to heat treatment. The temperature of the heat treatment is in the range from 250.degree. to 400.degree. C.
摘要:
A foamed polyarylene sulfide according to the invention has a density which is reduced by at least 50% compared with the theoretical density of nonfoamed material, and is expediently produced by subjecting a polyarylene sulfoxide as such or a mixture of one or more polyarylene sulfides with a polyarylene sulfoxide to heat treatment. The temperature of the heat treatment is in the range from 250.degree. to 400.degree. C.
摘要:
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.
摘要:
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--)--.
摘要:
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.
摘要:
The invention relates to a sensor comprising a piezoelectric crystal with a polyarylene thioether-containing coating, the coating containing at least one polyarylene system having repeating units of the formula I, —[(Ar1)n—X]m—[(Ar2)i—Y]j—[(Ar3)k—Z]l—[(Ar4)o—W]p— (I) which contain at least one thioether group, in which Ar1, Ar2, Ar3 and Ar4 are identical or different aryl systems having from 6 to 18 carbon atoms, W, X, Y and Z are identical or different linking groups, selected from the group comprising —SO2—, —S—, —SO—, —O—, —CO—, —CO2—, alkylene or alkylidene having from 1 to 6 carbon atoms and —NR1—, where R1 is an alkyl or alkylide group having from 1 to 6 carbon atoms and at least one linking group must be —S—, n, m, i, j, k, l, o, p are, equal or different, integers zero, 1, 2, 3 or 4, their sum having to be at least 2, and to the use thereof.
摘要翻译:本发明涉及包含具有聚亚芳基硫醚的涂层的压电晶体的传感器,该涂层含有至少一个具有式I重复单元的聚亚芳基体系,其含有至少一个硫醚基团,其中Ar 1,Ar 2,Ar 3和Ar 4 是具有6至18个碳原子的相同或不同的芳基系统,W,X,Y和Z是相同或不同的连接基团,选自-SO 2 - , - S - , - SO - , - O - 具有1至6个碳原子的-CO-,-CO 2 - ,亚烷基或亚烷基和-NR 1 - ,其中R 1是具有1至6个碳原子和至少一个连接基团的烷基或亚烷基基团必须是-S-,n ,m,i,j,k,l,o,p等于或不同,整数0,1,2,3或4,它们的和必须至少为2,并且与其使用有关。
摘要:
Polyarylene ethers are employed as filter material for removing NO.sub.2 from gases and liquids. In the presence of an oxidizing agent having a redox potential of at least 0.96 V SHE, NO can also be removed. The filter material is used to produce NO.sub.2 -free gases, for example in the medical sector.
摘要:
A molding composition or mixture comprising a polyamide and at least one polymer containing sulfoxide groups serves for the production of a foam material by the action of heat. The foam material is used for moldings and heat-resistant insulation layers.
摘要:
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: —(—C6H4—SO—)—.