Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Reexamination Certificate
2005-09-20
2005-09-20
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...
C526S351000, C526S352000, C525S055000
Reexamination Certificate
active
06946535
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-form 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: 6207756 (2001-03-01), Datta et al.
patent: 6245856 (2001-06-01), Kaufman et al.
patent: 6268438 (2001-07-01), Ellul et al.
patent: 6268444 (2001-07-01), Klosin et al.
patent: 6288171 (2001-09-01), Finerman et al.
patent: 6303719 (2001-10-01), Murray et al.
patent: 6326433 (2001-12-01), Wang et al.
patent: 6342565 (2002-01-01), Cheng et al.
patent: 6444302 (2002-09-01), Srinivas et al.
patent: 6500563 (2002-12-01), Datta et al.
patent: 6515155 (2003-02-01), Klosin et al.
patent: 6525157 (2003-02-01), Cozewith 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: 6750284 (2004-06-01), Dharmarajan 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: 2003/0130430 (2003-07-01), Cozewith et al.
patent: 2004/0116609 (2004-06-01), Datta et al.
patent: 0 277 003 (1988-08-01), None
patent: 0229476 (1991-10-01), None
patent: 0 468 537 (1992-01-01), None
patent: 0 468 651 (1992-01-01), None
patent: 0 514 828 (1992-11-01), None
patent: 0 515 203 (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
Bosnyak Clive
Chum Pak-Wing S.
Karande Seema
Tau Li-Min
Cheung William K.
Dow Global Technologies Inc.
Whyte Hirschboeck Dudek SC
LandOfFree
Films comprising isotactic propylene copolymers does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Films comprising isotactic propylene copolymers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Films comprising isotactic propylene copolymers will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3389094