Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Reexamination Certificate
2007-03-19
2010-02-16
Choi, Ling-Siu (Department: 1796)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From carboxylic acid or derivative thereof
C528S302000, C252S299010, C252S299670
Reexamination Certificate
active
07662907
ABSTRACT:
The present invention relates to all-aromatic polyesters, a method for preparing the same, and a polyester composition containing the same. The present method is carried out in two stages of first carrying out a prepolymerization to obtain a prepolymer having a specific particle size distribution, then carrying out a solid polymerization.The present method can control the quality of polyester effectively and produce all-aromatic polyester exhibiting excellent flowability, high heat resistance, and high solder heat resistance.
REFERENCES:
patent: 4748229 (1988-05-01), Hisgen et al.
patent: 5399656 (1995-03-01), Nitta et al.
patent: 6274242 (2001-08-01), Onodera et al.
Chen Chih Fu
Hwang Kuen Yuan
Liau Jia Sheng
Tu An Pang
Birch Stewart Kolasch & Birch, LLP.
Chang Chun Plastics Co. Ltd
Choi Ling-Siu
Tischler Frances
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