Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Reexamination Certificate
2006-12-12
2006-12-12
Nutter, Nathan M. (Department: 1711)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
C525S240000
Reexamination Certificate
active
07148289
ABSTRACT:
A polypropylene composition is disclosed, having a sealing initiation temperature below 80° C., and containing less than 1% by weight of monomeric units derived from ethylene with respect to the total weight of the composition, and comprising:—from 35 to 68% by weight of a random copolymer of propylene (copolymer (A)) containing 16 to 30% by weight of monomeric units derived from I-butene and from 0 to 0.5% by weight of monomeric units derived from ethylene with respect to the total weight of copolymer (A), and—from 65 to 32% by weight of a random copolymer of propylene (copolymer (B)) containing 35 to 55% by weight of monomeric units derived from I-butene and from 0 to 1% by weight of monomeric units derived from ethylene with respect to the total weight of copolymer (B). Heat-sealable sheets containing a sealing layer of the above composition are also disclosed.
REFERENCES:
patent: 5496600 (1996-03-01), Peiffer et al.
patent: 6006913 (1999-12-01), Ludemann et al.
patent: 2004/0082723 (2004-04-01), Deblauwe et al.
patent: 2116989 (1983-10-01), None
Coppini Valerio
Cuypers Herve Joseph Gislain
Lhost Olivier
BP Belgium NV
Henes James R.
Nutter Nathan M.
LandOfFree
Propylene polymer based compounds and heat-sealable... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Propylene polymer based compounds and heat-sealable..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Propylene polymer based compounds and heat-sealable... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3709357