ethers (Total 14698 Patents Found)

The invention relates to thermoplastic compositions made up of: A. Polyphenylene ethers, in an amount of 15-95 wt. parts; B. Styrene resins, in an amount of 0 to 70 wt. parts; C. E-SBR rubbers, in an amount of 3-15 wt. parts; D. styrene-butadiene polymers prepared by emulsion polymerization (wit...
The invention relates to thermoplastic compositions comprising mixtures of (A) 100 parts by wt. polyphenylene ethers; (B) 2-40 parts by wt. polyoctenylene; and (C) the following additives in amounts given as wt. % of the overall molding or forming composition: up to 50 wt. % reinforcing and fill...
Imidazoquinoline and tetrahydroimidazoquinoline compounds that contain ether and urea functionality at the 1-position are useful as immune response modifiers. The compounds and compositions of the invention can induce the biosynthesis of various cytokines and are useful in the treatment of a variety of conditions inclu...
Compositions of matter, and breaking water-in-oil petroleum emulsions therewith, which compositions comprise a substantially water-insoluble, at least partially oil-soluble product formed by the reaction of (A) a polyoxyalkylene alcohol in which the oxyalkylene groups consist essentially of a member from the group cons...
A multistage process for producing isoalkyl ethers from lower aliphatic oxygenate feedstock, such as methanol. Feedstock is catalytically converted in a primary catalyst stage at elevated temperature in contact with zeolite catalyst to predominantly C 2 -C 7 lower olefins comprising isobutylene and isoamylene, by-pro...
Described is the novel compound genus defined according to the structure: ##STR1## wherein R 1 is selected from the group consisting of methyl and isopropyl alcohol and wherein the dashed lines represents a carbon-carbon double bond and each of the other of the dashed lines represent carbon-carbon single bonds useful ...
A method for preparing an advanced epoxy cationic resin from an epoxy-based resin containing oxirane groups by converting at least some of the oxirane groups to cationic groups, wherein the improvement is using as the epoxy-based resin an advanced epoxy resin obtained by reacting in the presence of a suitable catalyst ...
Described herein is the synthesis of alkylated and semi-synthetic glycosaminoglycosan ethers, referred to herein as “SAGEs.” The synthesis of sulfated alkylated SAGEs is also described. The compounds described herein are useful in a number of applications including wound healing, drug delivery, and the treatment of...
The present invention provides aqueous compositions comprising β-hydroxy propyl gamma-polyoxyalkylene ether functional resins chosen from (poly)oxyalkylene ether β-hydroxy propyl (meth)acrylates, maleates and itaconates, water soluble copolymers thereof, and mixtures thereof. The water soluble copolymers are comb pol...
Certain cyclopropyl oxime ethers substituted by aryl and heterocyclic moieties possess broad spectrum fungicidal and insecticidal properties. These compounds are disclosed along with compositions containing these compounds and methods for controlling fungi and insects by the use of a fungitoxic or insecticidal amount o...
A single-stage method for producing α-hydroxy ethers by oxidizing olefinic substrates with organic hydroperoxides and opening the resultant oxirane ring by means of monovalent or polyvalent alcohols wherein a molybdenum compound in combination with a compound selected from the group consisting of boron trifluoride, al...
O-Benzyloxime ethers of the formula I ##STR1## where 5 x is substituted or unsubstituted CH 2 , NOalkyl Y is O, S, NR 5 R 1 , R 2 , R 5 are H, alkyl Z 1 , Z 2 are H, halogen, methyl, methoxy, cyano R 3 , R 4 are hydrogen, cyano, substituted or unsubstituted alkyl, alkenyl, cycloalkyl, cyclo...
A process for making and purifying dipropylene glycol tert-butyl ethers (DPTB). DPTB is made by reacting dipropylene glycol with isobutylene in the presence of an acidic catalyst. Extractive distillation of the product mixture using a glycol extracting agent, preferably dipropylene glycol, allows removal of di-tert-but...
A process for the purification of cold-water soluble cellulose ethers containing alkali metal halides consisting essentially of suspending a cold-water-soluble cellulose ether crude reaction product containing 25% by weight or more of alkali metal halides, based on the dry weight, in an aqueous solution containing from...
The present invention relates to a solid, acid catalyst for the preparation of polytetrahydrofuran, polytetrahydrofuran copolymers, diesters or monoesters of these polymers by polymerization of tetrahydrofuran in the presence of at least one telogen and/or comonomer, which has a BET surface area of at least 160 m 2 /g ...
The present invention relates to a method for refining polyoxymethylene dialkyl ethers by catalytic hydrogenation using a fixed bed, wherein, using a fixed bed reactor for refining by hydrogenation, an equilibrium system containing polyoxymethylene dialkyl ethers products is refined by catalytic hydrogenation, so as to...