Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...
Reexamination Certificate
2007-10-09
2007-10-09
Zemel, Irina S (Department: 1711)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
C521S050000, C521S082000, C521S092000, C521S142000, C521S146000
Reexamination Certificate
active
10488298
ABSTRACT:
Expandable vinylaromatic polymers which comprise: a) a matrix obtained by polymerizing 50-100% by weight of one or more vinylaromatic monomers and 0.50% by weight of a copolymerizable monomer; b) 1-10% by weight, calculated with respect to the polymer (a), of an expanding agent englobed in the polymeric matrix; c) 0.05-25% by weight, calculated with respect to the polymer (a), of an inorganic filler homogeneously distributed in the polymeric matrix with a substantially spherical granulometry, an average diameter ranging from 0.01 to 100 μm, a refraction index higher than 1.6 and a white index, as defined in “Colour Index” (third edition published by the Society of Dyers and Colourists, 1982), equal to or lower than 22.
REFERENCES:
patent: 3072581 (1963-01-01), Platzer
patent: 5935645 (1999-08-01), Anfuso et al.
patent: 6147130 (2000-11-01), Anfuso et al.
patent: 11 279319 (1999-10-01), None
patent: 11-279319 (1999-10-01), None
patent: 200 017096 (2000-01-01), None
patent: 2002194129 (2002-07-01), None
T. Whelan, Polymer Tchnology Dictionary, Chapman $ Hall, 1994, p. 141.
Casalini Alessandro
Frigerio Gilberto
Ghidoni Dario
Lanfredi Roberto
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Polimeri Europa S.p.A.
Zemel Irina S
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