Polycarbosilane Adhesion Promoters for Low Dielectric Constant Polymetric Materials

US06761975

The adhesion of low k poly(arylene ether) dielectric coating compositions is effectively enhanced by a polycarbosilane promoter additive or primer. A coating composition is prepared by (a) providing a poly(arylene ether) composition; and (b) adding to said composition a small effective adhesion promoting amount of certain polycarbosilanes. The adhesion enhanced coating compositions are cured by […]

High Pressure Gas Processing Configurations and Methods

US25211092

Contemplated plants comprise an acid gas removal unit (102) that receives a compressed gas from an injection gas compressor (107), wherein acid gas is removed from the compressed gas in the acid gas removal unit (102) at a pressure of about of above pipeline pressure.

Twin Reflux Process and Configurations for Improved Natural Gas Liquids Recovery

US07051553

A two-column NGL recovery plant includes an absorber (110) and a distillation colunm (140) in which the absorber (110) receives two cooled reflux streams, wherein one reflux stream (107) comprises a vapor portion of the NGL and wherein the other reflux stream (146) comprises a lean reflux provided by the overhead (144) of the distillation colunm (140). Contemplat configurations are especially advantageous in a upgrade of an existing […]

Catalysed Acylation of Alkylated Benzene Derivatives

US07087791

An ecofriendly process for acylation ofan alkylated benzene derivative has increased selectively towards para position and comprises a step of reacting the alkylated benzene derivative with an acylating agent in the presence of nitrobenzene, dichlorobenze, dimethylsulfolane, and/or benzotrile, and a crystalline alumino silicate catalyst having general formula M2/nO.Al2O3.xSiO2.wH2O, wherein M is an alkali cation, a […]

Process for Preparation of Ring-Substituted 8-Aminoquinoline Analogs as Antimalarial Agents

US06979740

The present invention is concerned with the development of novel 8-aminoquinoline analogs in the treatment and prevention of malaria and the said compound has broad spectrum of activity against the blood as well as tissue stages of the human malaria parasites makes these compounds very attractive in the cure and prevention of malaria caused by […]

Procedures for Obtaining Ribo-C-Nucleosides

US05907036

Novel procedures for obtaining ribo-C-nucleosides, including especially 2-ß-D-ribofuranosylthiazole-4-carboxylamide (tiazofirin) and 2-ß-D-ribofuranosylselenazole-4-carboxylamide (sylenazofurin) and synthesis intermediates thereof. The novel procedures involve introducing a cyano group at the 1′ position of a ribose, directly or indirectly converting the cyano group to HN=C–OR1 or thicarboxylamide wherein R1 is a lower alkyl, forming the group which substituted for the cyano group […]

New Polymeric Materials and Methods

WO06091894

Chimeric polymer compositions and methods are provided in which a plurality of carbohydrate moieties and amino acids form the backbone of a polymer. Most preferably, the polymer includes alternating saccharide and peptide portions to form the chimeric polymer.

Polycarbosilane Adhesion

US06761975 (1)

The adhesion of low k poly(arylene ether) dielectric coating compositions is effectively enhanced by a polycarbosilane promoter additive or primer. A coating composition is prepared by (a) providing a poly(arylene ether) composition; and (b) adding to said composition a small effective adhesion promoting amount of certain polycarbosilanes. The adhesion enhanced coating compositions are cured by […]

Low Dielectric Constant Organic Dielectrics Based on Cage-like Structures

US06509415

A low dielectric constant material has a first backbone with an aromatic moiety and a first reactive group, and a second backbone with an aromatic moiety and a second reactive group, wherein the first and second backbones are crosslinked via the first and second reactive groups in a crosslinking reaction without an additional crosslinker, and […]

Compositions and Methods for Thermosetting Molecules in Organic Compositions

US06469123

In a method of producing a low dielectric constant polymer, a thermosetting monomer is provided, wherein the thermosetting monomer has a cage compound or aryl core structure, and a plurality of arms that are covalently bound to the cage compound or core structure. In a subsequent step, the thermosetting monomer is incorporated into a polymer […]