Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Reexamination Certificate
2006-05-09
2006-05-09
Cheung, William K. (Department: 1713)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
C526S348200, C526S348500, C526S348600, C526S348400
Reexamination Certificate
active
07041765
ABSTRACT:
Films with excellent machine direction (MD) tear properties comprise at least one layer made from a polymer comprising:(A) at least 50 weight percent (wt%) propylene; and(B) at least 5 wt % ethylene and/or one or more unsaturated comonomers. Representative of component (B) unsatuarated comonomers are the C4-20α-olefins, C4-20dienes, styrenic compounds, and the like. Preferably, the film has at least one of a (i) haze value of less than about 10, (ii) 45 degree gloss of greater than about 65, and (iii) dart value of greater than about 100 g/mil. In one preferred embodiment, the layer comprises a compolymer characterized as having at least one of the following properties: (i)13C NMR peaks corresponding to a regio-error at about 14.6 and about 15.7 ppm, the peaks of about equal intensity, (ii) a B-value greater than about 1.4 when the comonomer content, i.e., the units derived from ethylene and/or the unsaturated comonomer(s), of the copolymer is at least about 3 wt %, (iii) a skewness index, Six, greater than about −1.20, (iv) a DSC curve with a Tmethat remains essentially the same and a Tmaxthat decreases as the amount of comonomer, i.e., the units derived from ethylene and/or the unsaturated comonomer(s), in the copolymer is increased, and (v) an X-ray diffraction pattern that reports more gamma-forn crystals than a comparable copolymer prepared with a Ziegler-Natta (Z-N) catalyst.
REFERENCES:
patent: 3520861 (1970-07-01), Thomson et al.
patent: 4076698 (1978-02-01), Anderson et al.
patent: 4542199 (1985-09-01), Kaminsky et al.
patent: 4543399 (1985-09-01), Jenkins, III et al.
patent: 4544762 (1985-10-01), Kaminsky et al.
patent: 4588790 (1986-05-01), Jenkins, III et al.
patent: 4599392 (1986-07-01), McKinney et al.
patent: 4874880 (1989-10-01), Miya et al.
patent: 4960878 (1990-10-01), Crapo et al.
patent: 4988781 (1991-01-01), McKinney et al.
patent: 5015749 (1991-05-01), Schmidt et al.
patent: 5028670 (1991-07-01), Chinh et al.
patent: 5032562 (1991-07-01), Lo et al.
patent: 5041583 (1991-08-01), Sangokoya
patent: 5041584 (1991-08-01), Crapo et al.
patent: 5041585 (1991-08-01), Deavenport et al.
patent: 5044438 (1991-09-01), Young
patent: 5057475 (1991-10-01), Canich et al.
patent: 5064802 (1991-11-01), Stevens et al.
patent: 5093415 (1992-03-01), Brady, III et al.
patent: 5096867 (1992-03-01), Canich
patent: 5106804 (1992-04-01), Bailly et al.
patent: 5132380 (1992-07-01), Stevens et al.
patent: 5134209 (1992-07-01), Job et al.
patent: 5153157 (1992-10-01), Hlatky et al.
patent: 5198401 (1993-03-01), Turner et al.
patent: 5218071 (1993-06-01), Tsutsui et al.
patent: 5272236 (1993-12-01), Lai et al.
patent: 5278272 (1994-01-01), Lai et al.
patent: 5296433 (1994-03-01), Siedle et al.
patent: 5324800 (1994-06-01), Welborn, Jr. et al.
patent: 5350723 (1994-09-01), Neithamer et al.
patent: 5352749 (1994-10-01), DeChellis et al.
patent: 5384373 (1995-01-01), McKinney et al.
patent: 5405922 (1995-04-01), DeChellis et al.
patent: 5408017 (1995-04-01), Turner et al.
patent: 5427991 (1995-06-01), Turner
patent: 5436304 (1995-07-01), Griffin et al.
patent: 5453471 (1995-09-01), Bernier et al.
patent: 5461123 (1995-10-01), Song et al.
patent: 5462999 (1995-10-01), Griffin et al.
patent: 5473028 (1995-12-01), Nowlin et al.
patent: 5504049 (1996-04-01), Crowther et al.
patent: 5504172 (1996-04-01), Imuta et al.
patent: 5541270 (1996-07-01), Chinh et al.
patent: 5556238 (1996-09-01), Chinh
patent: 5556928 (1996-09-01), Devore et al.
patent: 5599761 (1997-02-01), Turner
patent: 5608019 (1997-03-01), Cheruvu et al.
patent: 5616661 (1997-04-01), Eisinger et al.
patent: 5616664 (1997-04-01), Timmers et al.
patent: 5621127 (1997-04-01), Langhauser et al.
patent: 5625087 (1997-04-01), Devore et al.
patent: 5637660 (1997-06-01), Nagy et al.
patent: 5685128 (1997-11-01), Chum et al.
patent: 5703187 (1997-12-01), Timmers
patent: 5703257 (1997-12-01), Rosen et al.
patent: 5710224 (1998-01-01), Alt et al.
patent: 5721185 (1998-02-01), LaPointe et al.
patent: 5728855 (1998-03-01), Smith et al.
patent: 5731253 (1998-03-01), Sangokoya
patent: 5767208 (1998-06-01), Turner et al.
patent: 5874505 (1999-02-01), Saito et al.
patent: 5883188 (1999-03-01), Hwang et al.
patent: 5883204 (1999-03-01), Spencer et al.
patent: 5907021 (1999-05-01), Turner et al.
patent: 5919983 (1999-07-01), Rosen et al.
patent: 5962714 (1999-10-01), McCullough et al.
patent: 5965677 (1999-10-01), Stephan et al.
patent: 5965756 (1999-10-01), McAdon et al.
patent: 5972822 (1999-10-01), Timmers et al.
patent: 5977251 (1999-11-01), Kao et al.
patent: 5998039 (1999-12-01), Tanizaki et al.
patent: 6013819 (2000-01-01), Stevens et al.
patent: 6015868 (2000-01-01), Nickias et al.
patent: 6034021 (2000-03-01), Wilson et al.
patent: 6034240 (2000-03-01), La Pointe
patent: 6043363 (2000-03-01), LaPointe et al.
patent: 6074977 (2000-06-01), Rosen et al.
patent: 6103657 (2000-08-01), Murray
patent: 6150297 (2000-11-01), Campbell, Jr. et al.
patent: 6268444 (2001-07-01), Klosin et al.
patent: 6303719 (2001-10-01), Murray et al.
patent: 6515155 (2003-02-01), Klosin et al.
patent: 6642316 (2003-11-01), Datta et al.
patent: 2002/0062011 (2002-05-01), Campbell, Jr. et al.
patent: 2002/0137845 (2002-09-01), Boussie et al.
patent: 2002/0142912 (2002-10-01), Boussie et al.
patent: 2002/0147288 (2002-10-01), Boussie et al.
patent: 2002/0156279 (2002-10-01), Boussie et al.
patent: 2002/0165329 (2002-11-01), Klosin et al.
patent: 2002/0173419 (2002-11-01), Boussie et al.
patent: 2002/0177711 (2002-11-01), LaPointe et al.
patent: 2003/0004286 (2003-01-01), Klosin et al.
patent: 0229476 (1986-11-01), None
patent: 0 277 003 (1988-08-01), None
patent: 0 468 537 (1992-01-01), None
patent: 0 468 651 (1992-01-01), None
patent: 0 515 203 (1992-02-01), None
patent: 0 514 828 (1992-11-01), None
patent: 0 515 203 (1992-11-01), None
patent: 0 593 083 (1994-04-01), None
patent: 0 628 343 (1994-12-01), None
patent: 0 659 773 (1995-06-01), None
patent: 0 663 422 (1995-07-01), None
patent: 0 676 421 (1995-10-01), None
patent: 0 683 176 (1995-11-01), None
patent: 0 692 500 (1996-01-01), None
patent: 0 697 420 (1996-02-01), None
patent: 0 699 213 (1996-03-01), None
patent: 0 716 121 (1996-06-01), None
patent: 0 721 798 (1996-07-01), None
patent: 0 728 150 (1996-08-01), None
patent: 0 728 151 (1996-08-01), None
patent: 0 728 771 (1996-08-01), None
patent: 0 728 772 (1996-08-01), None
patent: 0 735 058 (1996-10-01), None
patent: 0 748 846 (1996-12-01), None
patent: 0 721 798 (1997-01-01), None
patent: 0 748 846 (1997-02-01), None
patent: 0 780 404 (1997-06-01), None
patent: 0 780 404 (1997-12-01), None
patent: 0 949 278 (1999-10-01), None
patent: 0 949 279 (1999-10-01), None
patent: 0 949 278 (2000-09-01), None
patent: 0 949 279 (2000-09-01), None
patent: 1 063 244 (2000-12-01), None
patent: 88/05792 (1988-08-01), None
patent: 88/05793 (1988-08-01), None
patent: 90/01521 (1990-02-01), None
patent: 90/07526 (1990-07-01), None
patent: 93/11171 (1993-06-01), None
patent: 93/18106 (1993-09-01), None
patent: 93/19104 (1993-09-01), None
patent: 93/21238 (1993-10-01), None
patent: 93/21238 (1993-10-01), None
patent: 93/21242 (1993-10-01), None
patent: 93/25590 (1993-12-01), None
patent: 94/00500 (1994-01-01), None
patent: 94/03506 (1994-02-01), None
patent: 94/25495 (1994-11-01), None
patent: 94/25497 (1994-11-01), None
patent: 94/26793 (1994-11-01), None
patent: 94/28032 (1994-12-01), None
patent: 94/29032 (1994-12-01), None
patent: 95/00526 (1995-01-01), None
patent: 95/07942 (1995-03-01), None
patent: 95/13305 (1995-05-01), None
patent: 95/13306 (1995-05-01), None
patent: 96/00244 (1996-01-01), None
patent: 96/13530 (1996-05-01), None
patent: 96/23010 (1996-08-01), None
patent: 97/22635 (1997-06-01), None
patent: 97/25355 (1997-07-01), None
patent: 97/42241 (1997-11-01), None
patent: 98/41529 (1998-09-01), None
patent: 98/50392 (1998-11-01), None
patent: 99/14250 (1999-03-01), None
patent: 00/01745 (2000-09-01), None
News Release, Japan Polychem Launches WINTEC Metallocene-Based PP Random Copolymer, Oct. 25, 2001, http://www.m-kagaku.co.jp/english/rel/2001/102501
Bosnyak Clive
Chum Pak-Wing S.
Karande Seema
Tau Li-Min
Cheung William K.
Dow Global Technologies Inc.
Whyte Hirschboeck Dudek SC
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