Soft homogeneous isotactic polypropylene compositions

Details Soft homogeneous isotactic polypropylene compositions Soft homogeneous isotactic polypropylene compositions

2008-04-03

2010-12-28

Nutter, Nathan M (Department: 1765)

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

07858701

ABSTRACT:
The present invention also discloses a homogeneous blend composition comprising; a) from 1% to 99% by weight of the blend of a first polymer component comprising a copolymer of 5% to 35% by weight of the first polymer component consisting predominantly of alpha olefin derived units and 65% to 95% by weight of the first polymer component of propylene derived units having a crystallinity of 0.1% to about 25% from isotactic polypropylene sequences, a melting point of from 45° C. to 105° C., and wherein the Melt Flow Rate (MFR @ 230° C.) of the first polymer component is between 300 g/10 min to 5000 g/10 min. b) from 1% to 99% by weight of the blend of a second polymer component comprising isotactic polypropylene and random copolymers of isotactic propylene, wherein the percentage of the copolymerized alpha-olefin in the copolymer is between 0.0% and 9% by weight of the second polymer component and wherein the second polymer component has a melting point greater than about 110° C., wherein the first polymer component has less than 1000 ppm of reaction products arising from the chemical reaction of a molecular degradation agent.

REFERENCES:
patent: 3439088 (1969-04-01), Edman
patent: 3818105 (1974-06-01), Coopersmith et al.
patent: 3882197 (1975-05-01), Fritz et al.
patent: 4178272 (1979-12-01), Meyer, Jr. et al.
patent: 4461872 (1984-07-01), Su
patent: 4645792 (1987-02-01), Chatterjee
patent: 4749736 (1988-06-01), Khanna et al.
patent: 5057455 (1991-10-01), Foo et al.
patent: 5057475 (1991-10-01), Canich et al.
patent: 5153157 (1992-10-01), Hlatky et al.
patent: 5171908 (1992-12-01), Rudnick
patent: 5198401 (1993-03-01), Turner et al.
patent: 5290886 (1994-03-01), Ellul
patent: 5397832 (1995-03-01), Ellul
patent: 5594080 (1997-01-01), Waymouth et al.
patent: 5783531 (1998-07-01), Andrew et al.
patent: 6197285 (2001-03-01), Kowalik et al.
patent: 6342565 (2002-01-01), Cheng et al.
patent: 6500563 (2002-12-01), Datta et al.
patent: 6635715 (2003-10-01), Datta et al.
patent: 6642316 (2003-11-01), Datta et al.
patent: 6747114 (2004-06-01), Karandinos et al.
patent: 6867260 (2005-03-01), Datta et al.
patent: 6921794 (2005-07-01), Cozewith et al.
patent: 6927258 (2005-08-01), Datta et al.
patent: 6982310 (2006-01-01), Datta et al.
patent: 6992158 (2006-01-01), Datta et al.
patent: 6992159 (2006-01-01), Datta et al.
patent: 7019081 (2006-03-01), Datta et al.
patent: 7026405 (2006-04-01), Cozewith et al.
patent: 7049372 (2006-05-01), Datta et al.
patent: 7053164 (2006-05-01), Datta et al.
patent: 7084218 (2006-08-01), Datta et al.
patent: 7105603 (2006-09-01), Dharmarajan et al.
patent: 2004/0087751 (2004-05-01), Tau et al.
patent: 2004/0157999 (2004-08-01), Agarwal et al.
patent: 2004/0249046 (2004-12-01), Abhari et al.
patent: 2005/0043470 (2005-02-01), Stevens et al.
patent: 2005/0054781 (2005-03-01), Dharmarajan et al.
patent: 2005/0106978 (2005-05-01), Cheng et al.
patent: 2006/0025531 (2006-02-01), Datta et al.
patent: 2006/0135699 (2006-06-01), Li et al.
patent: 2006/0172647 (2006-08-01), Mehta et al.
patent: 2006/0293453 (2006-12-01), Jiang et al.
patent: 2007/0015877 (2007-01-01), Burkhardt et al.
patent: 2007/0240605 (2007-10-01), Iyer et al.
patent: 0 082 726 (1983-06-01), None
patent: 03/025036 (2003-03-01), None
patent: 03/025037 (2003-03-01), None
patent: 03/025038 (2003-03-01), None
patent: 03/025084 (2003-03-01), None
patent: WO 2006/065663 (2006-06-01), None
patent: WO 2006/113132 (2006-10-01), None
Randall, J. C., “A Review of High Resolution Liquid 13 Carbon Nuclear Magnetic Resonance Characterizations of Ethylene-Based Polymers” Polymer Reviews, 1989, C29, (2&3) pp. 285-297.
Bourland, L. “Low MW Polypropylene: Heterogeneous Nucleant for Pet Resin” Polymer Preprints-American Chemical Society, Division of Polymer Chemistry, 1987, vol. 28(2), pp. 385-387.
Bourland, L. “Ultra-high-flow PP speeds up PET crystallization” Plastics Engineering, 1987 vol. 43(7), pp. 39-41.
Janimak, J. et al. “Crystallization behavior of low molecular mass isotactic poly(propylene) fractions”, Polymer Bulletin, 1989, vol. 22(1), pp. 95-101.
Lowrey, R.D., “Hydrocarbon Resins” Kirk-Othmer Encyclopedia Chemical Technology, 4Th Ed. 1995, Chapter 13, pp. 717-743.
Pospisil, L. et al. “Activated heterogeneous nucleation of isotactic polypropylene” Journal of Materials Science Letters, 1990, vol. 9(4), pp. 495-496.
Sun, T. et al., “Effect of short Chain Branching on the Coil Dimensions of Polyolefins in Dilute Solution” Macromolecules, 2001, vol. 34, No. 19, pp. 6812-6820.

Affiliated with

Also associated with

Rating

Soft homogeneous isotactic polypropylene compositions does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Soft homogeneous isotactic polypropylene compositions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Soft homogeneous isotactic polypropylene compositions will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4225807