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
2005-05-03
2005-05-03
Teskin, Fred (Department: 1713)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
C525S074000, C525S078000, C525S080000, C525S301000, C525S302000, C525S322000, C524S582000, C156S327000
Reexamination Certificate
active
06887943
ABSTRACT:
This invention provides a graft modified polypropylene polymer which does not contain halogens, is excellent in certain properties such as solubility and can add good adhesiveness and coating ability to crystalline propylene polymer base materials, and a composition containing the same; and in particular, it provides a propylene polymer which contains a propylene polymer main chain having a stereo-block structure containing an isotactic block and a side chain containing a carboxylic acid group, an acid anhydride group or a carboxylic acid ester group, wherein when it is dissolved in toluene to a concentration of 10% by weight at 25° C., the insoluble matter is 1% by weight or less based on the total polymer, and a composition containing the same.
REFERENCES:
patent: 3853969 (1974-12-01), Kontos
patent: 4335225 (1982-06-01), Collete et al.
patent: 4522982 (1985-06-01), Ewen
patent: 5665820 (1997-09-01), Leistner et al.
patent: 5695838 (1997-12-01), Tanaka et al.
patent: 6548603 (2003-04-01), Saton et al.
patent: 0 537 130 (1993-04-01), None
patent: 0 636 653 (1995-02-01), None
Burlant et al, Block and Graft Copolymers, Reinhold Publishing, N.Y., 1960, pp. 153-154.*
Buscio et al, New Evidence on the Nature of the Active Sites in Heterogeneous Ziegler-Natta Catalysts for Propene Polymerization, Macromolecules 1997, 30, 4786-4790.*
G. W. Coates, “Precise Control of Polyolefin Stereochemistry Using Single-Site Metal Catalysts” Chem. Rev., vol. 100, 2000, pp. 1223-1226.
J. A. Ewen, “Mechanisms of Stereochemical Control in Propylene Polymerizations with Soluble Group 4B Metallocene/Methylalumoxane Catalysts,” J. Am. Chem. Soc., vol. 106, 1984, pp. 6355-6364.
J. W. Collette et al., “Elastomeric Polypropylenes from Alumina-Supported Tetraalkyl Group IVB Catalysts”, MACROMOLECULES, vol. 22, No. 10, 1989, pp. 3851-3858.
Derwent Publications, AN 2002-164097, XP-002261223, WO 01/85815, Nov. 15, 2001.
Derwent Publications, AN 1996-439604, XP-002261224, JP 08-217835, Aug. 27, 1996.
Uozumi et al, “Isospecific Propylene Polymerization Using the [ArN(CH2)3NAr]TiCl2/Al(Bu)3/Ph3CH(C6F5)4Catalyst System in the Presence of Cyclohexene”, Macromol. Chem. Phys. 2001, 202, No. 17, pp. 3279-3283.
U.S. Appl. No. 10/284,241, filed Oct. 31, 2002, Onoe et al.
U.S. Appl. No. 10/650,676, filed Aug. 29, 2003, Shimizu et al.
Ashihara Teruaki
Hata Kazuyuki
Onoe Masato
Sato Naomasa
Shimizu Fumihiko
Mitsubishi Chemical Corporation
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Teskin Fred
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