Crystallizable propylene copolymers

Details Crystallizable propylene copolymers Crystallizable propylene copolymers

2011-01-11

2011-01-11

Choi, Ling-Siu (Department: 1796)

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

Reexamination Certificate

active

07868104

ABSTRACT:
A propylene copolymer is described comprising at least 70 mol % of units derived from propylene, up to 30 mol % of units derived from a combination of ethylene, at least one alpha-olefin having from 4 to 10 carbon atoms, such that the molar ratio of ethylene-derived units to said alpha-olefin-derived units in said combination is from about 1:9 to about 9:1, and from 0 to about 3 mol % of units derived from a copolymerizable diene. The copolymer has isotactically arranged propylene derived sequences, an overall heat of fusion as determined by differential scanning calorimetry (DSC) of less than 65 J/g, a second melting point as determined by DSC of less than 100° C., less than one 1,3 insertion error per 1000 carbon atoms and a weight average molecular weight as determined by gel permeation chromatography (GPC) of from about 100,000 to about 500,000.

REFERENCES:
patent: 5346925 (1994-09-01), Sugano et al.
patent: 5504172 (1996-04-01), Imuta et al.
patent: 5936053 (1999-08-01), Fukuoka et al.
patent: 5989725 (1999-11-01), Bullard et al.
patent: 6388040 (2002-05-01), Fujita et al.
patent: 6525157 (2003-02-01), Cozewith et al.
patent: 6552149 (2003-04-01), Alastalo et al.
patent: 6627723 (2003-09-01), Karandinos et al.
patent: 2003/0083515 (2003-05-01), Rodriguez
patent: 1 514 896 (2005-03-01), None
patent: 1 614 699 (2006-11-01), None
patent: 70028 (1986-12-01), None
patent: 09012635 (1997-01-01), None
patent: WO 2006/009951 (2006-01-01), None
patent: WO 2006/010139 (2006-01-01), None
R. Quijada et al., “Synthesis and properties coming from the copolymerization of propene with α-olefins using different metallocene catalysts,” Polymer, 2005, vol. 46, pp. 1567-1574.

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