摘要:
Amorphous hydrofluoroolefin telomers are prepared by a free-radical polymerization process conducted at high temperature and pressure in the presence of non-monomeric chain transfer agent.
摘要:
Fluoroelastomer compositions comprising fluoroelastomers having copolymerized units of a nitrile-containing cure site monomer are cured with certain hydrazide curatives. The hydrazide is of the general formula R1(C(O))nNHNHR2, wherein n is 1 or 2; R1 is NH2, NHNH2, NHR3, NR32, NHNHC(O)NH2, NHNHC(O)NHNH2, NHNHR2, or NHC(O)NHNH2; R2 is H, alkyl, aryl, heterocycle, CO2R3, C(O)R3, CH2R4, or C(O)R4; R3 is alkyl, aryl, heterocycle, or CH2R4; and R4 is a fluoroalkyl group.
摘要翻译:包含具有含腈固化部位单体的共聚单元的含氟弹性体的含氟弹性体组合物用某些酰肼固化剂固化。 酰肼为通式R 1(C(O))nNHNHR 2,其中n为1或2; R1是NH2,NHNH2,NHR3,NR32,NHNHC(O)NH2,NHNHC(O)NHNH2,NHNHR2或NHC(O)NHNH2; R 2是H,烷基,芳基,杂环,CO 2 R 3,C(O)R 3,CH 2 R 4或C(O) R3是烷基,芳基,杂环或CH2R4; R4为氟代烷基。
摘要:
This invention relates to ionomers and to ionically conductive compositions formed therefrom. The ionomers comprise polymerized units of monomers A and monomers B, wherein monomers A are perfluoro dioxole or perfluoro dioxolane monomers, and the monomers B are functionalized perfluoro olefins having fluoroalkyl sulfonyl, fluoroalkyl sulfonate or fluoroalkyl sulfonic acid pendant groups, CF2═CF(O)[CF2]nSO2X. The ionically conductive compositions of the invention are useful in fuel cells, electrolysis cells, ion exchange membranes, sensors, electrochemical capacitors, and modified electrodes.
摘要:
This invention relates to certain photocrosslinkable fluoropolymers, processes for crosslinking the fluoropolymers using UV radiation, and the photocrosslinked fluoropolymers produced.
摘要:
There is provided a transparent composite conductor. The composite conductor has a first layer that includes a transparent conductive material and a second layer that includes a fluorinated acid polymer.
摘要:
The present invention is drawn to liquid perfluoro-n-alkanes that are highly transparent to UV wavelengths ranging from about 150 nm to 165 nm, and to the method by which high transparency may be obtained. The liquid perfluoro-n-alkanes of the invention are useful in optical couplants, optical cements, optical elements, optical inspection media for semiconductor wafers and devices, and immersion photolithography at 157 nm exposure wavelength.
摘要:
This invention concerns radiation durable organic compositions which are well-suited for use in 157 nm lithography by virtue of their high transparency and excellent radiation durability, and to a process for the preparation thereof.
摘要:
The present invention relates to in situ polymerization of fluoropolymer into porous substrates, to improve resistance to wear, tear and creep, decay, and degradation by wetting, staining and warping, and to improve durability while maintaining the appearance of the substrate.
摘要:
Disclosed is a liquid/gelatinous composition of matter comprising: (a) a solvent or a mixture of solvents selected from the group consisting of: (i) a CnF2n+2−xHx compound, wherein n is an integer from 6 to 15 and x is an integer from 1 to 3; and (ii) a Cn′F2n′−x′Hx′ compound, wherein n′ is an integer from 7 to 15 and x′ is an integer from 1 to 3; and (b) one or more amorphous fluoropolymers selected from the group consisting of: (i) poly(HFP/TFE); (ii) iodine ended poly(TFE/PMVE); (iii) poly(TFE/PMVE/PEVE); (iv) poly(TFE/PDD); (v) poly(TFE/perfluorovinylether); (vi) poly(CF2═CF(CF2)2OCF═CF2/TFE); and wherein the amorphous fluoropolymer has no detectable Tm (