Thermoplastic polymer, process for producing the same, and...

Details Thermoplastic polymer, process for producing the same, and... Thermoplastic polymer, process for producing the same, and...

2008-03-25

2008-03-25

Pezzuto, Helen L (Department: 1796)

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S317100, C526S318400, C526S328500, C526S329600

Reexamination Certificate

active

10947536

ABSTRACT:
A thermoplastic polymer containing glutaric anhydride units of the following general formula (1) and having an absorbance at a wavelength of 280 nm of at most 0.5 (the absorbance is a value of the polymer film having a thickness of 100 μm, measured with a UV-visible spectrophotometer) and a glass transition temperature of not lower than 130° C. has high-level colorless transparency and good heat resistance, moldability and dwell stability.wherein R1and R2are the same or different and each represents a hydrogen atom or an alkyl group having from 1 to 5 carbon atoms.

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