Appeal No. 2000-0019
Application 08/977,451
REPRESENTATIVE CLAIM
Claim 1, which is illustrative of the subject matter on appeal, reads as follows:
1. Polyolefin composition comprising (percentages by weight):
1) from 1% to 40% of hollow microspheres;
2) from 60% to 99% of a polyolefin composition comprising (percentages by
weight):
a) from 25% to 95% of polypropylene homopolymer, polyethylene
homopolymer, or a propylene/ethylene, propylene/C4-C10 a – olefin, or
propylene/ethylene/C4-C10 a – olefin crystalline random copolymer, or mixtures
thereof;
b) from 0% to 70% of an ethylene-propylene or ethylene/C4-C10 a – olefin
elastomeric copolymer, optionally containing minor quantities of a diene;
c) from 0.5% to 10% of polypropylene or polyethylene modified with polar
groups in quantities ranging from 0.1 to 10%;
d) from 0% to 10% of titanium dioxide;
said polyolefin composition 2) having MFR (ASTM D-1238, condition L)
from 2 to 150 g/10 min., and being in powder form with not more than 3% of the
granules having a diameter greater than 600 micrometers, and wherein said
microspheres have not been treated with a polyolefin chain degradation agent
prior to contact with said polyolefin composition.
THE REFERENCES
In rejecting the appealed claims under 35 U.S.C. §103(a) as obvious, the
Examiner relies on the following references:
Coleman-Kammula et al. (Coleman) 0,473,215 A1 Mar. 4, 1992
(European Patent Application)
Marzola et al. (Marzola)2 0,603,906A1 Jun. 29, 1994
(European Patent Application)
2 This reference has Roberto Marzola as an inventor in common with the present patent application.
2
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