Abstract:
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.
Abstract:
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.
Abstract:
This invention relates to a process for the synthesis of diacyl peroxide by contacting acyl halide and peroxide complex in compatible aprotic solvent substantially free of compounds oxidizable by the peroxide complex or the reaction products of organic acyl halide with peroxide complex and the initiation of polymerization with diacyl peroxide in the aprotic solvent.
Abstract:
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.
Abstract:
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 (
Abstract:
A process for the faster manufacturing of hydrocarbon, fluorocarbon and chlorocarbon acyl peroxides is disclosed wherein a hydroxide, a peroxide and an acyl halide are reacted under continuous vigorous agitation conditions so as to bring the reaction to substantial completion is less than one minute.
Abstract:
Disclosed herein are novel amorphous tetrafluoroethylene-hexafluoropropylene (TFE-HFP) copolymers, which are more random than previous amorphous TFE-HFP copolymers, as well as a novel high productivity continuous process for making these polymers. The polymers are particularly useful in the form of coatings, films and encapsulants.
Abstract:
An electrode (31c) for fuel cell comprises: a catalyst carrier (110) that is an electrically-conductive carrier (130) with a catalyst (120) supported thereon; a first electrolyte resin (141); and a second electrolyte resin (142). The first electrolyte resin has oxygen permeability of less than 2.2×10−14 mol/(m s Pa) in an environment having temperature of 80 degrees Celsius and relative humidity of 50%. The second electrolyte resin has oxygen permeability of not less than 2.2×10−14 mol/(m s Pa) in the environment having temperature of 80 degrees Celsius and relative humidity of 50%.
Abstract:
The present invention is drawn to the use of alkanes that are highly transparent to UV wavelengths ranging from about 170 nm to 260 nm in optical couplants, optical cements, optical elements, optical inspection media for semiconductor wafers and devices, and immersion photolithography, particularly at 193 and 248 nm exposure wavelength.