摘要:
Provided are a vinyl ether polymer which can exert temperature responsiveness even in the case of being supported on a highly hydrophobic fibrous substrate, an agent for controlling hydrophilicity and hydrophobicity containing the polymer, a method for controlling hydrophilicity and the hydrophobicity using the polymer, and a polymer-substrate composite having the polymer supported on a substrate. A star-shaped vinyl ether polymer which includes a central core and an arm portion bonded to the central core and in which the arm portion includes a repeating unit derived from a vinyl ether monomer and a structure represented by the following Formula (1) is included in the molecule: €ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ-Y-Ar 1 -N=N-Ar 2 €ƒ€ƒ€ƒ€ƒ€ƒ(1) i in which Y represents an ether bond, a thioether bond, a group -NH-, or a group -OR 1 -* (R 1 represents an alkylene group, * represents a position bonded to Ar 1 in Formula (1)), Ar 1 represents a substituted or unsubstituted divalent aromatic hydrocarbon group, and Ar 2 represents a substituted or unsubstituted monovalent aromatic hydrocarbon group].
摘要:
[Object] To provide a method of producing a homopolymer or random copolymer of hydroxyl group-containing vinyl ether simply and conveniently as well as efficiently. [Means for solving problem] A method of producing a homopolymer or random copolymer of hydroxyl group-containing vinyl ether according to the present invention comprises the step of polymerizing a monomer component comprising at least one hydroxyl group-containing vinyl ether using an oil-soluble radical polymerization initiator in the absence or presence of a solvent.
摘要:
There are provided an etching mask which has a superior thermal imprinting characteristic and also a good anti-etching characteristic, a base material with the etching mask, a microfabricated product to which those etching mask and base material are applied, and a production method of the microfabricated product. The etching mask formed of a thermoplastic resin containing at least one kind of skeleton expressed by a chemical formula (1) or a chemical formula (2) in a main chain (R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 in the formulae (1), (2) can be different or same one another, each of which is a hydrogen atom, a deuterium atom, a hydrocarbon group having a carbon number of 1 to 15, a halogen atom, or a substituent group containing a hetero atom like oxygen or sulfur, and may form a ring structure one another. m and n are integers equal to or greater than 0).
摘要:
A novel soluble polyimide resin which is highly soluble in a solvent, has high transparency and hence is useful particularly in the fields of electronics and optoelectronics, and has good moldability; a process for preparing the same; and a composition comprising a solution of the soluble polyimide resin. The polyimide resin comprises 2,5 (or 6)-bis(aminomethyl)bicyclo[2.2.1]heptane as the whole or a part of the diamine units and has a transmittance of at least 60 % in the wavelength region longer than 400 nm in the ultraviolet/visible light absorption spectrum as measured in the form of a 10 mu m-thick film.
摘要:
Provided are an apparatus and method for continuously producing a cyclic carbonate which are easily scaled up without requiring a large-sized reactor or excessive ancillary facilities even in the case of producing a cyclic carbonate by using an immobilized catalyst as a catalyst on an industrial scale, are able to produce a cyclic carbonate without impairing the expected catalytic efficiency and catalyst lifetime, are economical, and exhibit excellent industrial productivity. The apparatus includes an adiabatic reactor to be filled with a heterogeneous catalyst for reacting an epoxide with carbon dioxide, a circulation path for returning at least a portion of a fluid mixture in a liquid form flowed out through a reactor outlet into the reactor, a carbon dioxide supply means for continuously supplying carbon dioxide in a liquid form or a supercritical state into the circulation path, and an epoxide supply means for continuously supplying an epoxide in a liquid or solution form into the circulation path.
摘要:
Provided are: a method for easily producing a heterogeneous catalyst having excellent catalytic activity at a low cost, said heterogeneous catalyst being used for the purpose of synthesizing a cyclic carbonate by subjecting to a reaction an epoxide and carbon dioxide; a catalyst which is obtained by this production method; and a method for synthesizing a cyclic carbonate with use of this catalyst. A method for producing a catalyst that is used for the purpose of synthesizing a cyclic carbonate by subjecting to a reaction an epoxide with carbon dioxide, said method comprising the following steps (a) and (b): (a) a step of obtaining a catalyst precursor having a haloalkyl group or a haloaryl group, by subjecting to a reaction a silane compound having a haloalkyl group or a haloaryl group and a silica gel having an average pore diameter of from 3.5 to 50 nm, and (b) a step of obtaining a catalyst for cyclic carbonate synthesis, by subjecting to a reaction the catalyst precursor obtained in step (a) and a tertiary phosphine, in which the molar ratio of the halogen content to the phosphorus content, namely [halogen]/[phosphorus] is from 0.8 to 1.6.
摘要:
The present invention provides a method for easily and inexpensively producing a heterogeneous catalyst used to synthesize a cyclic carbonate by reacting an epoxide with carbon dioxide and having excellent catalyst activity; a catalyst obtained using said manufacturing method; and a method for synthesizing a cyclic carbonate using said catalyst. A method for producing a catalyst that is used for the purpose of synthesizing a cyclic carbonate by subjecting to a reaction an epoxide with carbon dioxide, said method comprising the following steps (a) and (b): (a) a step of obtaining a catalyst precursor having a haloalkyl group or a haloaryl group by reacting a silane compound with a silica gel in the presence of xylene, the silane compound having a haloalkyl group or a haloaryl group and (b) a step of obtaining a catalyst for synthesizing a cyclic carbonate by reacting the catalyst precursor obtained in step (a) with a tertiary phosphine.
摘要:
A method for producing poly(dimethyl vinylphosphonate) from a monomer component mainly containing dimethyl vinylphosphonate by anionic polymerization in the presence of an anionic polymerization initiator, the method being characterized in that an aliphatic ether is used as a polymerization solvent, and a method for producing poly (vinylphosphonic acid) characterized in that the poly(dimethyl vinylphosphonate) obtained by the former method is hydrolyzed in the presence of an acid are provided. The methods make it possible to easily produce a poly(dimethyl vinylphosphonate) which has a high molecular weight and in which the molecular weight is controlled, and make it possible to produce a poly (vinylphosphonic acid) which has a high molecular weight and in which the molecular weight is controlled corresponding to the poly(dimethyl vinylphosphonate).