- N-(1-HYDROXYETHYL)CARBOXAMIDE COMPOUND AND PROCESS FOR PRODUCING SAME
-
The present invention relates to an N-(1-hydroxyethyl)carboxamidecompound represented by formula(1) (in the formula, RA and RB represent independently from each other a hydrogen atom or an alkyl group having 1 to 4 carbon atoms except for a case where RA and RB represent a hydrogen atom at the same time) and a method for producing the same; a method for producing an N-(1-alkoxyethyl)carboxamide compound; a method for producing an N-vinyl carboxylic acid amide compound; and a method for producing an N-vinyl carboxylic acid amide (co)polymer. An N- (1-alkoxyethyl) carboxamide compound can be obtained by reacting N-(1-hydroxyethyl)carboxamide compound with alcohol in the presence of an acid catalyst, and an N-vinyl carboxylic acid amide compound, which is a monomer of the N-vinyl carboxylic acid amide (co)polymer, can be obtained by thermally decomposing or catalytically decomposing the N-(1-alkoxyethyl)carboxamide compound.
- -
-
Page/Page column 18-19
(2011/12/01)
-
- METHOD FOR PRODUCING N-METHYL-N-VINYLACETAMIDE HAVING IMPROVED STABILITY AND POLYMERIZABILITY
-
The present invention relates to a method for producing N-methyl-N-vinylacetamide, which comprises a step for controlling the N-1,3-butadienyl-N-methylacetamide content in N-methyl-N-vinylacetamide to 0.01-150 ppm. This method enables production of N-methyl-N-vinylacetamide having a stable quality, which can be controlled in stability and polymerizability as a monomer. N-methyl-N-vinylacetamide produced by the method enables production of an N-methyl-N-vinylacetamide polymer having stable physical properties such as a molecular weight.
- -
-
Page/Page column 10
(2010/11/03)
-
- Gas-phase vinylation of N-methylacetamide
-
Catalysts for selective gas-phase vinylation of N-methylacetamide with acetylene were studied. These catalysts were obtained by applying to wide-pore silica gel of the CdO-K2O-ZnO system or applying to commercial Al2O3 of the CdO-K2O and CdO-K2O-ZnO systems.
- Deryagina,Sukhomazova,Levanova,Arndt,Henkelmann,Trofimov
-
p. 940 - 946
(2007/10/03)
-
- Catalyst for production of tertiary N-alkenyl carboxylic acid amide, and process for production of tertiary N-alkenyl carboxylic acid amide using said catalyst
-
The present invention provides a catalyst which is an oxide comprising silicon and at least one element selected from the group consisting of alkali metals and alkaline earth metals and which is used for gas-phase intramolecular dehydration of a tertiary N-(2-hydroxyalkyl) carboxylic acid amide to synthesize a tertiary N-alkenyl carboxylic acid amide. This catalyst enables continuous and efficient production of a tertiary N-alkenyl carboxylic acid amide from a tertiary N-(2-hydroxyalkyl) carboxylic acid amide without using any auxiliary raw material, and consequently allows for simple and safe production of a tertiary N-alkenyl carboxylic acid amide without generating any by-product (waste product) derived from the auxiliary raw material.
- -
-
-
- Process for production of N-vinyl compound
-
The present invention provides a process for producing an N-vinyl compound, which comprises subjecting an N-(-alkoxyalkyl) compound to gas phase intramolecular alcohol elimination to convert said compound to an N-vinyl compound directly in one step, wherein a solid oxide containing phosphorus and an alkali metal and/or an alkaline earth metal is used as a catalyst. This process need not use any solvent or any auxiliary raw material and consequently can produce an N-vinyl compound simply and safely without generating any waste material derived from the auxiliary raw material.
- -
-
-
- Immobilization of an isethiacyanate of a cofactor on a polymer
-
A cofactor having an aromatic or benzylic amino group is converted into an isothiocyanate by reaction with a compound such as thiophosgene and the isothiocyanate of the cofactor is attached to a polymer which is preferably water-soluble. When the polymer has amino groups, a thiourea bridge is formed between the polymer and cofactor and a polymer having hydroxyl groups results in a thiocarbamate bridge. The polymer may be a copolymer of vinylamine or vinylmethylamine and vinylmethylacetamide, partially alkylamine-substituted α, β-poly-(2-hydroxyethyl)-D,L-aspartamide, polyethyleneimine or carbohydrate. The cofactor bound to a polymer and an enzyme are contained in microcapsules or in a membrane to form an enzyme reactor.
- -
-
-
- NEW SYNTHESIS OF SECONDARY CARBOXAMIDE BY USING 2-METHYL-2-OXAZILONE AS A BUILDING BLOCK
-
New method for the synthesis of secondary carboxamides of type, R2NHCOR1, which utilizes 2-methyl-2-oxazoline as a carboxamide building block and various halides, R2X, has been developed.
- Inaba, Masami,Moriwake, Toshio,Saito, Seiki
-
p. 3235 - 3238
(2007/10/02)
-
- Water-soluble fast polymeric black colorant, its preparation and use in dyes and inks
-
A family of polymeric black colorants is disclosed. The subject colorants are composed of an organic polymer backbone comprised of a plurality of aromatic rings from which depend via azo groups a plurality of chromophore units having the structure STR1 wherein M is hydrogen or preferably a cation. These polymeric colorants are water-soluble, and noncrystalline and form dyes and inks that are fast to paper stock.
- -
-
-
- Process for the preparation of N-vinyl-N-alkyl-carboxylic acid amides
-
N-Vinyl-N-alkyl-carboxylic acid amides are prepared, starting from N-ethyl-carboxylic acid amides, in a 3-stage process consisting of the following stages: (a) anodic alkoxylation of the N-ethyl-carboxylic acid amides to give N-α-alkoxyethyl-carboxylic acid amides; (b) alkylation of these N-α-alkoxyethyl-carboxylic acid amides with an alkyl halide or dialkyl sulfate in an alkaline medium to give N-α-alkoxyethyl-N-alkyl-carboxylic acid amides; and (c) splitting off of alcohol from the products of stage (b) by heating to temperatures between about 60° and about 350° C. Instead of stages (b) and (c), it is also possible to carry out the following stages after stage (a): (b1) splitting off of alcohol from the N-α-alkoxyethylcarboxylic acid amides obtained in stage (a) by heating to temperatures of about 60° to about 600° C., to give N-vinyl-carboxylic acid amides; and (c1) alkylation of these N-vinyl-carboxylic acid amides by reaction with an alkylating agent of the same type as in stage (b) in an alkaline medium. The N-vinyl-N-alkyl-carboxylic acid amides obtained by the process are valuable intermediate products, in particular for the manufacture of homopolymers and copolymers with interesting properties.
- -
-
-
