Ultraviolet radiation absorbents for thermoplastic polymers...

Details Ultraviolet radiation absorbents for thermoplastic polymers... Ultraviolet radiation absorbents for thermoplastic polymers...

2006-06-06

2006-06-06

Saeed, Kamal A. (Department: 1626)

Organic compounds -- part of the class 532-570 series

Organic compounds

Chalcogen in the nitrogen containing substituent

C524S090000

Reexamination Certificate

active

07057037

ABSTRACT:
An ultraviolet radiation absorbent for thermoplastic polymer materials such as polyethylene terephthalate or polycarbonate contains cyclic imino ester compound of a specified structure in an amount of over 99.5 weight % and less than 100 weight %, having the melt beginning temperature obtained by melting point measurement in differential thermal analysis within the range of 300–310° C. and/or the weight loss beginning temperature obtained by thermogravimetric measurement within the range of 270–305° C.

REFERENCES:
patent: 4446262 (1984-05-01), Okumura et al.
patent: 6809133 (2004-10-01), Osaki et al.

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