30 results about "Cyclodecane" patented technology

The compound of the invention, having an average isocyanate functionality of greater than 2, results from the reaction of a (poly)isocyanate having an average functionality of greater than 2, with the compound X comprising a function B(H)n or B'(H)n' where n is equal to 1 or 2, n' is equal to 1, 2 or 3, H is a labile hydrogen and B denotes O, S, N, N being a primary or secondary nitrogen, -C(=O)-O, -C(=O)-N, or else the groups O=P(O)2; O=P(O)OR1; O=P(O)3; O=P(O)2 OR1; O=P(O)-OR1, R1 denoting an alkyl or aralkyl radical, and B' denotes -SiR2R3R4, R2, R3 and R4 representing oxygen, an alkyl radical bearing a function that is reacted with the (poly)isocyanate, or an aralkyl, aryl, -O-alkyl or -O-aralkyl radical, X being, in addition, a cycloaliphatic, aromatic or heterocyclic compound or a particle of a crosslinked polymer; and with the proviso that, when B denotes a secondary nitrogen and X is a cycloaliphatic compound, X is then a compound having at least two rings; the reaction being carried out with a compound X / [compound X + (poly)isocyanate] weight ratio of at most 50%. The invention also relates to a composition of the hardener type which comprises at least one compound of the above type. The compound or the composition of the invention can be used in the preparation of a coating of the paint or varnish type.

A method of preparing thermoplastic polyester elastomer membrane with high binding strength includes the following steps: (a) Adding a reaction solvent to TPEE powder or granules to prepare a solvent mixture. (b) Adding a modifier to the solvent mixture, and mixing uniformly to prepare a first mixture, the modifier including at least one of o-xylylenediamine, m-xylylenediamine, alpha,alpha′-diamino-p-xylene, 2,3,5,6-Tetrachloro-p-xylene-alpha,alpha′-diamine, and 1,3,5,7-Tetraazatricyclodecane. (c) Adding an initiator to the first mixture, and mixing uniformly to prepare a second mixture. (d) Obtaining a finished product by passing the second mixture through an injection laminating process.

A method for producing adamantane by performing an isomerization reaction in two stages using endo-tetrahydrodicyclopentadiene and / or exo-tetrahydrodicyclopentadiene as a starting material, wherein in a first-stage isomerization reaction from endo-tetrahydrodicyclopentadiene (tricyclo[5.2.1.02,6]decane) to exo-tetrahydrodicyclopentadiene (tricyclo[5.2.1.02,6]decane), an HF catalyst alone or two catalysts of an HF catalyst and a BF3 catalyst are used in the absence of a solvent; and in a second-stage isomerization reaction from exo-tetrahydrodicyclopentadiene (tricyclo[5.2.1.02,6]decane) to adamantane (tricyclo[3.3.1.13,7]decane), an HF catalyst and a BF3 catalyst are used in the absence of a solvent.

Novel compounds each having a 3,4-epoxytricyclo[5.2.1.0<2,6>]- decane skeleton and a polymerizable unsaturated bond; a process for the production thereof; and a copolymer composed of (A) units derived from a monomer having an alkali-soluble group, (B) units derived from an epoxy-containing polymerizable unsaturated compound and, if necessary, (C) units derived from an epoxy-free polymerizable unsaturated compound such as N-substituted maleimide, characterized in that the units (B) account for 40 to 90 wt% of the whole of the units of the copolymer and the units derived from a specific monomer having a 3,4-epoxy- tricyclo[5.2.1.0<2,6>]decane skeleton account for at least 30 wt% of the whole of the units (B). The copolymer can give film excellent in heat resistance and so on and the resin compositions containing the copolymer are extremely excellent in storage stability, while the copolymer is easy of synthesis.

The present invention provides a cleanser composition which is used for removing fixing agents and protecting films used in processes for polishing optical articles such as lenses and has high cleansing powers against the fixing agents and the protecting films without using halogen-based solvents, fluorine-based solvents and aromatic solvents against which affections are feared. This cleanser composition is characterized by comprising 75 to 25 wt. % of an alkylene glycol alkyl ether such as dipropylene glycol monomethyl ether or dipropylene glycol dimethyl ether and 25 to 75 wt. % of a 10 to 15C cycloparaffin such as cyclodecane, cycloundecane or cyclododecane.

The invention discloses a synthesizing method of vildagliptin, and belongs to the field of medicine intermediate synthesis. The method includes the steps of conducting an imidization with 3-amino-1-adamantanol and monohydrated glyoxylic acid as the raw materials to obtain (3-hydroxyl adamantly imino)acetic acid, conducting acylation condensation on the (3-hydroxyl adamantly imino)acetic acid and (S)-pyrrolidine-2-formonitrile under the catalysis of electron-withdrawing phenylboric acid to obtain (2S)-1-[[(3-hydroxyl tricyclic[3,3,1,1[3,7]]decane-1-yl)imino]acetyl]pyrrolidine-2-formonitrile, and then conducting hydrazine hydrate reduction to obtain vildagliptin. A one-pot method is adopted, operation is simple, impurities are few, the product is easy to purify, the purifying steps are reduced, cost is reduced, and the method is suitable for industrial production.

A method for the synthesis of diazabicyclo[6.2.0]decane compounds is provided. The synthesis proceeds by stereoselective synthesis of a chiral lactone followed by azetidine formation via a series of chemoselective reactions. Bicyclization results with the formation of diazobicyclo[6.2.0]decane related compounds.

Tricyclodecane dimethanol-based compositions are provided which contain specific amounts of components and allow for improved fluidity and optical properties of products made therewith.

The present invention provides a tricyclodecane dimethanol-based composition, which contains a specific amount of components and can make a product prepared therefrom have improved fluidity and optical properties.