Aromatic polyester

Details Aromatic polyester Aromatic polyester

2005-05-10

2005-05-10

Acquah, Samuel A. (Department: 1711)

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

C528S190000, C528S193000, C528S194000, C528S198000, C528S199000, C528S206000, C528S212000, C525S437000, C525S444000, C524S442000, C524S720000

Reexamination Certificate

active

06890988

ABSTRACT:
The present invention provides an aromatic polyester which is obtained by condensation polymerization reaction of terephthalic acid, 2,6-naphthalenedicarboxylic acid and acylated product obtained by acylation of parahydroxybenzoic acid and hydroquinone with fatty acid anhydride, wherein said aromatic polyester satisfy the following conditions (A) to (D), and the acylation and/or the condensation polymerization reaction are conducted in the presence of heterocyclic organic compound containing at least two nitrogen atoms:(A): Number of moles of a monomer unit derived from parahydroxybenzoic acid (UNIT (1)) is 54-62 moles per 100 moles of UNIT (1), a monomer unit derived from hydroquinone (UNIT (2)), a monomer unit derived from terephthalic acid (UNIT (3)) and a monomer unit derived from 2,6-naphthalenedicarboxylic acid (UNIT (4)) in total;(B): Number of moles of UNIT (2) is 19-23 moles per 100 moles of UNIT (1), UNIT (2), UNIT (3) and UNIT (4) in total;(C): The molar ratio of UNIT (3) and UNIT (4), which is represented by the following formula (I) is 0.23-0.35:in-line-formulae description="In-line Formulae" end="lead"?[(3)]/{[(3)]+[(4)]}  (I)in-line-formulae description="In-line Formulae" end="tail"? wherein [(3)] and [(4)] represent number of moles of respective UNIT (3) and UNIT (4);(D): Total number of moles of UNIT (3) and UNIT (4) is 0.95-1.05 moles per one mole of UNIT (2).

REFERENCES:
patent: 5710237 (1998-01-01), Waggoner et al.
patent: 5969083 (1999-10-01), Long et al.
patent: 6121369 (2000-09-01), Stack et al.
patent: 20020055607 (2002-05-01), Okamoto et al.
patent: WO 9745469 (1997-12-01), None

Affiliated with

Also associated with

Rating

Aromatic polyester does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Aromatic polyester, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Aromatic polyester will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3437375