Copolyesters containing naphthalene and the preparation thereof

Details Copolyesters containing naphthalene and the preparation thereof Copolyesters containing naphthalene and the preparation thereof

1995-07-11

1997-09-02

Mosley, Terressa

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525436, 525437, 528176, 528190, 528191, 528194, 528195, C08G 6300

Patent

active

056632380

ABSTRACT:
The present invention relates to a random copolyester containing naphthalene ring structure, in particular to a random copolyester containing a first repeating unit which is the same as that of polyalkylene naphthalate, such as polyethylene naphthalate (PEN) and polybutylene naphthalate (PBN), and a second repeating unit which is similar to the first repeating unit except that an aryl ether linkage is incorporated thereto. The present copolyester can be prepared from a dihydroxyethoxy compound and bis(hydroxyalkyl)naphthalate via a direct melt polycondensation in the presence of a metallic catalyst.

REFERENCES:
patent: 3935166 (1976-01-01), Kanai et al.
patent: 4059546 (1977-11-01), Knopka

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