1-Butene polymer and molded product consisting of the polymer

Details 1-Butene polymer and molded product consisting of the polymer 1-Butene polymer and molded product consisting of the polymer

2005-08-16

2005-08-16

Lu, Caixia (Department: 1713)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S160000, C526S165000, C526S164000

Reexamination Certificate

active

06930160

ABSTRACT:
1-butene based polymer satisfying following requirements (1″) to (4″) provides formed product having low stickiness, superior flexibility and transparency.(1″) Crystalline resin having melting point (Tm−P), not observed or in the range of 0 to 100° C., wherein said melting point defined as the peak top of the peak observed in the highest temperature zone of the melting heat absorption curve obtained by heating a sample of said polymer at a rate of 10° C./minute using Differential Scanning Calorimeter (DSC), after melting said sample in advance at 190° for 5 minutes under nitrogen atmosphere, followed by cooling it to −10° C. at a rate of 5° C./minutes, and keeping it at −10° C. for 5 minutes.(2″) Stereoregularity index {(mmmm)/(mmrr+rmmr)} is at most 20.(3″) Molecular weight distribution (Mw/Mn) measured by Gel Permeation Chromatography (GPC) method is at most 4.0.(4″) Weight average molecular weight (Mw) measured by GPC method is in the range of 10,000 to 1,000,000.

REFERENCES:
patent: 721954 (1996-07-01), None
patent: 818458 (1998-01-01), None
patent: 62-119213 (1987-05-01), None
patent: 8-225605 (1996-09-01), None
patent: WO 92/05208 (1992-04-01), None
Longo et al., “13C-Enriched End Groups of Isotactic Polypropylene and Poly(1-butene) Prepared in the Presence of Ethylenediindenyldimethyltitanium and Methylalumoxane”, Macromolecules 1987, 20, 1015-1018.

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