Melt-stable polyester resins and molded articles thereof

Details Melt-stable polyester resins and molded articles thereof Melt-stable polyester resins and molded articles thereof

1991-06-27

1993-01-26

Kight, III, John

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528176, 528272, C08G 6300, C08G 6302

Patent

active

051823594

ABSTRACT:
Moldable polyester resins having high melt-phase stability and which form substantially no thermal decomposition products during melt-phase processing have a carboxyl end group concentration of no greater than 40 milliequivalent/kg, and are the reaction product of (a) an aromatic dicarboxylic acid or its ester-forming derivative, (b) an aliphatic dihydroxy compound having 2 to 8 carbon atoms, and (c) an ester-forming comonomer having the general formula (I):

REFERENCES:
patent: 4877922 (1989-10-01), Sasaki et al.
patent: 4968777 (1990-11-01), Nakane et al.
patent: 4968778 (1990-11-01), Still et al.
patent: 5021545 (1991-06-01), Nakane et al.
CA 104(10): 69941r Taira, Kazuo et al., "Plastic containers", Japan.
CA 72(12):56641p Nakayama, Yozo; et al., "Polyester with good dyeability".

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