Macrocyclic oligomers containing spiro(bis)indane moietes

Details Macrocyclic oligomers containing spiro(bis)indane moietes Macrocyclic oligomers containing spiro(bis)indane moietes

1988-01-20

1990-12-25

Foelak, Morton

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From carboxylic acid or derivative thereof

528185, 528190, 528195, 528298, 548110, 556419, C08G 6300, C08G 6942, C07D23100, C07F 704

Patent

active

049804537

ABSTRACT:
Macrocyclic oligomers, including polycarbonates, polyesters, polyamides, polyimides, polyetherketones and polyethersulfones, are conveniently prepared from various spiro(bis)indane compounds, especially the 6,6'-difunctional 3,3',3'-tetramethylspiro(bis)indanes. The macrocyclic oligomers may be conveniently converted to linear polymers.

REFERENCES:
patent: 3725070 (1973-04-01), Hamb et al.
patent: 3856752 (1974-12-01), Bateman et al.
patent: 4734482 (1988-03-01), Tamai et al.
patent: 4736016 (1988-04-01), Brunette et al.
patent: 4757132 (1988-07-01), Brunelle et al.
patent: 4789725 (1988-12-01), Guggenheim et al.
patent: 4795680 (1989-01-01), Rich et al.
patent: 4826916 (1989-05-01), Policastro et al.
patent: 4837298 (1989-06-01), Cella et al.
patent: 4864034 (1989-09-01), Cella et al.

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