290 results about "Quaternary carbon" patented technology

An article of manufacture and method of making and implanting the article made of a polyolefin star or linear copolymer are disclosed in which the polyolefin copolymer is biostable and crack-resistant when implanted in vivo. The polyolefin copolymer is the reaction product of a rubbery component which when homopolymerized produces a polymer having a low level of hardness, and a hardening component which when homopolymerized produces a polymer having a high level of hardness. The polyolefin copolymer is elastomeric, has a hardness intermediate the low and high levels of hardness, and has a backbone in which the majority of polymer linkages along the copolymer chain are alternating quaternary and secondary carbon atoms.

The present invention has its object to provide a curable composition which has good curability and adhesiveness while containing an organotin-free catalyst. The present invention provides a one package curable composition which comprises (A) a polyoxyalkylene polymer having a silicon-containing group capable of crosslinking by forming a siloxane bond, (B) a (meth)acrylic ester polymer having a silicon-containing group capable of crosslinking by forming a siloxane bond and compatible with the component (A), and (C) (c1) a carboxylic acid of which the carbon atom adjacent to a carbonyl group is a quaternary carbon, and/or (c2) a metal carboxylate of which the carbon atom adjacent to a carbonyl group is a quaternary carbon.

Stable carbene ligands are provided having a carbene center flanked by a quaternary carbon and an amino group, and having utility in the preparation of various transition metal complexes.

Compounds that include diorgano groups having quaternary carbons and optionally urethane groups, urea groups, or combinations thereof (i.e., polyurethanes, polyureas, or polyurethane-ureas), as well as materials and methods for making such compounds.

A photosensitive composition including: a plurality of quantum dots, wherein the quantum dot includes an organic ligand with a hydrophobic moiety bound to a surface of the quantum dot; a binder; a photopolymerizable monomer having a carbon-carbon double bond; a photoinitiator; and a solvent, wherein the binder includes a multiple aromatic ring-containing polymer including a main chain including a carboxylic acid group and a backbone structure incorporated in the main chain, wherein the backbone structure includes a quaternary carbon atom, which is a part of a cyclic group, and two aromatic rings bound to the quaternary carbon atom, and wherein the plurality of quantum dots are dispersed in the binder.

This invention relates to an ion-conducting binder used for a membrane electrode assembly for polymer electrolyte fuel cells, the assembly consisting of a polymer electrolyte membrane and two gas diffusion electrodes stuck to the polymer electrolyte membrane with the membrane put between the electrodes, which binder comprises a block copolymer which comprises a polymer block (A) having as a main unit an aromatic vinyl compound unit whose α-carbon is quaternary carbon, and a flexible polymer block (B), and has ion-conducting groups on the polymer block (A), and a solution or suspension thereof, and a membrane electrode assembly and a polymer electrolyte fuel cell.

The ion-conducting binder, membrane electrode assembly and polymer electrolyte fuel cell of this invention are economical, mild to the environment and excellent in moldability and oxidation stability.

Provided is a nonaqueous electrolyte secondary battery using lithium-manganese composite oxide as positive electrode active material, having superior high-temperature charge storage characteristics and charge-discharge cycling characteristics and enhanced safety in the event of overcharging. A nonaqueous electrolyte secondary battery according to an aspect of the invention includes: a positive electrode plate provided with a positive electrode mixture containing positive electrode active material, a negative electrode plate, a nonaqueous electrolyte, and a pressure-sensitive safety mechanism that is actuated by rise in internal pressure. The positive electrode active material contains lithium-manganese composite oxide containing 10 to 61% by mass of the element manganese. The positive electrode mixture contains lithium carbonate or calcium carbonate, and lithium phosphate. The nonaqueous electrolyte contains an organic additive made of at least one selected from among biphenyl, a cycloalkyl benzene compound, and a compound having quaternary carbon adjacent to a benzene ring.

The invention discloses a chiral 1,2-diamine compound and a preparation method and application thereof. The molecular structure general formula of the chiral 1,2-diamine compound is shown as the general formula (I) in the specification. The preparation method of the chiral 1,2-diamine compound comprises the steps that an amine compound A and a nitroolefin compound B are added to a reaction system containing an n-heterocyclic carbine catalyst, an alkali reagent, a proton additive and a dewatering reagent for reacting and other steps. The chiral 1,2-diamine compound comprises chiral quaternary carbon atoms containing electrondrawing groups and amino groups, and can be widely used for synthesizing drug intermediates, especially heterocyclic ring structure compounds, and preparing functional materials. The preparation method is simple in process and low in requirement for reaction conditions, the reaction process is safe and controllable, the atom utilization rate and production efficiency are high, meanwhile, the enantioselectivity of products is efficiently guaranteed, and the environment pollution pressure of the methodology is low through the introduction of the small organic molecule asymmetric catalysis concept.

The present invention provides a non-aqueous electrolyte secondary cell that has good high-temperature cycle characteristics and good high-temperature standing resistance, and that is highly safe enough to prevent overcharge. The non-aqueous electrolyte secondary cell of the invention utilizes a non-aqueous electrolyte that includes a vinylene carbonate derivative, a cyclic sulfite derivative, and both/either of a phenylcycloalkane derivative and/or an alkylbenzene derivative having a quaternary carbon directly bonded to a benzene ring.

A non-aqueous electrolyte secondary cell superior in safety against overcharge and in high-temperature cycle characteristic is provided. The non-aqueous electrolyte secondary cell includes a positive electrode, a negative electrode, a non-aqueous electrolyte, and a pressure sensitive safety mechanism that is actuated upon increase in the cell internal pressure. The positive electrode contains lithium carbonate at 0.5 to 1.5 mass %. The non-aqueous electrolyte contains a cycloalkyl benzene compound and/or a compound having a benzene ring and a quaternary carbon adjacent to the benzene ring, the compound or compounds being contained at 0.5 to 2 mass % in total.

The nonaqueous electrolyte used in the nonaqueous electrolyte battery of the invention is characterized in that it contains vinylene carbonate (VC) and lithium borofluoride (LiBF₄) and further contains at least one derivative selected from among cycloalkylbenzene derivatives or from among alkylbenzene derivatives having a quaternary carbon atom directly bound to the benzene ring and having no primary or secondary alkyl group directly bound to the benzene ring. The use of such nonaqueous electrolyte makes the storage characteristics of the nonaqueous electrolyte battery at high temperature improve remarkably even when the content of LiBF₄ is reduced, while preventing diminution of battery capacity at the same time.

A fluid for traction drives for automobiles which comprises (A) a hydrocarbon compound having two bridged rings selected from bicyclo[2.2.1]heptane ring, bicyclo[3.2.1]octane ring, bicyclo[3.3.0]octane ring and bicyclo[2.2.2]octane ring and (B) a hydrocarbon compound having at least one structure selected from quaternary carbon atom and ring structures and having a kinematic viscosity at 40° C. of 10 mm²/s or smaller, and has a viscosity at −40° C. of 40,000 Pa·s or smaller and a flash point of 140° C. or higher, is provided. This fluid exhibits a great traction coefficient at high temperatures and very small viscosity at low temperatures. A fluid for traction drives which comprises a specific bicyclo[2,2,1]heptane derivative having 14 to 17 carbon atoms and having a viscosity index of 0 or greater is also provided. This fluid exhibits improved viscosity-temperature characteristics, decreased viscosity and improved fluidity at low temperatures.

A resin mold for molding a curable resin, which has been made by molding a resin composition comprising an alicyclic structure-containing polymer and a nitrogen-containing organic compound (X) having at least one nitrogen atom which is bonded to at least one tertiary or quaternary carbon atom. A curable resin is molded and cured using a combined mold which is a combination of two resin molds (A) and (B), wherein at least one (A) of the two resin molds is made by molding a resin composition comprising an alicyclic structure-containing polymer and the nitrogen-containing organic compound (X). Preferably, the two molds (A) and (B) are made by molding resin compositions comprising an alicyclic structure-containing polymer and different amounts of the nitrogen-containing organic compound (X).

The present invention provides novel photoresist compositions that comprise a resin binder, a photoacid generator compound and an added amine component. In a first aspect, the added amine preferably is 1) non-aromatic 2) has from about 9 to about 16 carbon atoms, 3) contains no primary or secondary amine groups, and/or 4) contains no multiple tertiary amine groups where two tertiary groups are separated by a linkage of optionally substituted ethylene. In a related aspect, the added amine is a non-aromatic amine that comprises either 1) a tertiary nitrogen alicyclic ring member, and preferably is at junction position between a bicyclic or other multi-ring ring system; or 2) a tertiary nitrogen that is not a ring member, and is substituted by at least two tertiary or quaternary carbon radicals.