Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Patent
1989-01-11
1989-11-07
Foelak, Morton
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
528222, 528223, 528224, 528225, 525242, 525280, 525309, C08G 200, C08G 400
Patent
active
048793663
ABSTRACT:
Aromatic oligomers, in particular arylene ketone and arylene sulfone oligomers, are prepared by reacting an appropriate monomer system in the presence of free Lewis acid and a complex between a Lewis acid, for example, aluminum trichloride, and a Lewis base, for example, N,N-dimethylformamide, and, optionally, a diluent, such as methylene chloride. The process is particularly advantageous for the preparation of substantially or all paralinked arylene ether ketone oligomers as the presence of the Lewis acid/Lewis base complex markedly reduces alkylation and ensures the substantial absence of ortho substitution. The monomer system can be, for example, a self-reacting monomer such as p-phenoxy-benzoyl chloride or a two-monomer system such as 1,4-diphenoxybenzene and terephthaloyl chloride.
REFERENCES:
patent: 3065205 (1962-11-01), Bonner, Jr.
patent: 3385825 (1968-05-01), Goodman et al.
patent: 3441538 (1969-04-01), Marks
patent: 3442857 (1969-05-01), Thornton
patent: 3516966 (1970-06-01), Berr
patent: 3524833 (1970-08-01), Darms
patent: 3767620 (1971-11-01), Angelo et al.
patent: 3791890 (1974-02-01), Gander et al.
patent: 3953400 (1976-04-01), Dahl
patent: 3956240 (1976-05-01), Dahl et al.
patent: 4008203 (1977-02-01), Jones
patent: 4052365 (1977-10-01), Jones
patent: 4229564 (1980-10-01), Dahl
patent: 4247682 (1981-01-01), Dahl
patent: 4356292 (1982-10-01), Sankaran et al.
patent: 4356298 (1982-10-01), Marvel et al.
patent: 4361693 (1982-11-01), Jansons
patent: 4396755 (1983-08-01), Roses
patent: 4398020 (1983-08-01), Rose
patent: 4721771 (1988-01-01), Jansons et al.
Gors Heinrich C.
Jansons Viktors
Burkard Herbert G.
Chao Yuan
Foelak Morton
Moore M. L.
Raychem Corporation
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