Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...
Reexamination Certificate
2011-04-05
2011-04-05
Zemel, Irina S (Department: 1765)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
C521S134000, C521S138000, C521S139000, C521S182000, C521S097000, C524S513000, C525S177000, C525S437000, C525S444000, C525S445000
Reexamination Certificate
active
07919539
ABSTRACT:
A masterbatch composition comprising an aromatic polyester resin, a polyolefin and a polyfunctional compound selected from the dianhydrides of tetracarboxylic aromatic and/or aliphatic acids and the polyepoxidic compounds, wherein the polyester resin and the polyfunctional compounds are omogeneously dispersed as solids in a matrix formed by the polyolefin, as domains of average particle size less than 800μ. The masterbatch is prepared by milling polyester resins and polyolefin granules to obtain powders having average particle size of less than 200μ, and the powders are therafter homogeneously mixed.
REFERENCES:
patent: 5288764 (1994-02-01), Rotter et al.
patent: 5801206 (1998-09-01), Khemani et al.
patent: 2613577 (2010-03-01), None
patent: WO 97/11126 (1997-03-01), None
Josif Albert
Modiano & Associati
O'Byrne Daniel
Point Plastic S.R.L.
Zemel Irina S
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