Bromierte Diphenylether ? eine entscheidende Zwischenstufe auf dem Weg zu synthetischen Schmierstoffen
摘要:
The described synthesis of synthetic lubricants based on polyphenyl ethers requires an analytical characterization of the isomerization step, which is important to the process optimization. The separation of the intermediates succeeds with gas chromatography; the isomers are determined using a retention index system. The obtained results are compared with the composition of the final product, which was investigated by HPLC analysis.
Composition for film formation and material for insulating film formation
申请人:JSR CORPORATION
公开号:US20020172652A1
公开(公告)日:2002-11-21
A composition for film formation capable of forming a coating film excellent in low dielectric constant characteristics, cracking resistance, modulus of elasticity, and adhesion to substrates and useful as an interlayer insulating film material in semiconductor devices, etc. The composition for film formation contains (A) at least one member selected from an aromatic polyarylene and an aromatic poly (arylene ether), (B) a polyvinylsiloxane, and (C) an organic solvent.
A polyamide resin having double bonds in its main chain is prepared by reacting a bis-alkenoic amide with an aromatic dihalide. These starting materials are stable, easy to handle and inexpensive.
A process for manufacturing an aromatic polyester resin represented by the general formula:
[-O-Ar¹-O--Ar²--]n
wherein Ar¹ and Ar² represent a bivalent aromatic residue and n is an integer of 10 to 100,
comprising a reaction of an aromatic diol represented by the general formula:
HO-Ar¹-OH
with a bivalent dibromide represented by the general formula:
Br-Ar²-Br
and carbon monoxide in the presence of a palladium catalyst and an organic base in an organic solvent.
Diyne-containing (co) polymer, processes for producing the same, and cured film
申请人:JSR Corporation
公开号:EP1099719A1
公开(公告)日:2001-05-16
A diyne-containing (co)polymer which is soluble in organic solvents, has excellent processability, and gives a cured coating film excellent in heat resistance, solvent resistance, low-dielectric characteristics, and mechanical strength; processes for producing the same; and a cured film.
The diyne-containing (co)polymer contains at least 10 mol% repeating units represented by the following formula (1) and has a weight-average molecular weight of from 500 to 1,000,000:
wherein Y represents a specific bivalent organic group; Ar represents a bivalent organic group; and n represents 0 or 1.