Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Reexamination Certificate
2011-05-17
2011-05-17
Boykin, Terressa M (Department: 1765)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
C524S343000, C526S285000, C528S198000
Reexamination Certificate
active
07943722
ABSTRACT:
Provided is a flame-retardant polyarylate resin and a composition thereof, and more particularly, a polyarylate resin prepared by co-polymerizing 4,4′-dihydroxyphenylacetylene (DHPA), phthaloyl chloride (PC) and bishydroxyphenol (BHP) and a composition of the polyarylate resin. The polyarylate resin has lower heat release capacity than a conventional resin or a resin containing a halogen-based flame-retardant, is environmentally friendly, does not produce toxic materials, and has more excellent flame-retardancy than a conventional halogen-based flame-retardant and a flame-retardant resin. In addition, the polyarylate resin has excellent processibility and compatibility due to high solubility in a commonly used industrial solvent and has excellent thermal stability due to a high molecular weight.
REFERENCES:
Ellzey, Kenneth A. et al.: “Deoxybenzoin-Based Polyarylates as Halogen-Free Fire-Resistant Polymers”,Macromolecules, 2006, 39, pp. 3553-3558.
Walters, Richard N. et al.: “Molar Group Contributions to Polymer Flammability”,Journal of Applied Polymer Science, vol. 87, 2003, pp. 548-563.
Boykin Terressa M
Frommer & Lawrence & Haug LLP
Korea Research Institute of Chemical Technology
Santucci Ronald R.
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