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
2003-04-11
2008-12-02
Choi, Ling-Siu (Department: 1796)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
C525S301000, C525S386000, C525S263000
Reexamination Certificate
active
07459503
ABSTRACT:
The present invention relates to a method for producing a modified propylene-based polymer containing modifying a propylene-based polymer by a radical initiator and an organic acid, a modified propylene-based polymer obtained by the method, and an adhesive composition containing the modified propylene-based polymer. The propylene-based polymer is a propylene homopolymer satisfying the conditions of (a) mmmm=20 to 60 mol %, (b) [rrrr/(1-mmmm)]≦0.1, (c) rmrm>2.5 mol %, (d) mmxrr/(mr)2≦2.0, and (e) the weight ratio (W25) of components eluted at 25° C. or lower in a temperature programmed chromatography is 20 to 100% by weight, or a propylene copolymer satisfying the condition of (h) the stereoregularity index (P) obtained by13C-NMR measurement is 55 to 90 mol %.The modified propylene-based polymer of the invention can make a polyolefin, etc. more adhesive, stronger, or flexible, to be useful for a high-adhesive sealant or an polyolefin with increased compatibility to an inorganic filler, etc., particularly as a resin for a hot-melt adhesive.
REFERENCES:
patent: 3616047 (1971-10-01), Kehe
patent: 4159287 (1979-06-01), Ames
patent: 5698637 (1997-12-01), Aarila
patent: 5998547 (1999-12-01), Hohner
patent: 6262182 (2001-07-01), Eagan et al.
patent: 6310134 (2001-10-01), Templeton et al.
patent: 196 48 895 (1998-05-01), None
patent: 0 612 773 (1994-08-01), None
patent: 0 903 356 (1999-03-01), None
patent: 1 095 951 (2001-05-01), None
patent: 55-050007 (1980-04-01), None
patent: 59-217709 (1984-12-01), None
patent: 3-168206 (1991-07-01), None
patent: 10-1513 (1998-01-01), None
patent: 2000-169528 (2000-06-01), None
patent: 2000-234004 (2000-08-01), None
patent: WO 00/00558 (2000-01-01), None
Database WPI, AN 1989-297896, XP-002332430, JP 01-221475, Sep. 4, 1989.
Aburatani Ryo
Fujimura Takenori
Kanamaru Masami
Minami Yutaka
Tatsumi Tomio
Choi Ling-Siu
Idemitsu Kosan Co. Ltd.
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
LandOfFree
Process for production of modified propylene polymers and... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for production of modified propylene polymers and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for production of modified propylene polymers and... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4022342