Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Reexamination Certificate
2011-08-30
2011-08-30
Cain, Edward (Department: 1762)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
C523S124000, C523S125000, C523S126000, C523S127000
Reexamination Certificate
active
08008373
ABSTRACT:
A biodegradable thermoplastic polymer masterbatch composition comprising a blend of at least one biodegradable thermoplastic polymer containing high loading of a particulate filler uniformly dispersed therein. The amount of the biodegradable thermoplastic polymer is generally from about 25% to about 50% by weight and the amount of the filler is from about 75% to about 50% by weight, based upon the total amount of one biodegradable polymer and the at least one filler. The uniform dispersion of the fillers is desirably obtained by adding small particles of the filler to a melt of the biodegradable polymer and blending using high shear equipment with special screw geometry. The masterbatch composition is then physically blended with additional biodegradable thermoplastic polymer and extrusion processed into final articles such as blown and cast films, molded products, and the like. The masterbatch multi-stage approach of the present invention results in a product that has improved physical properties and lower costs over that of a one step blend of the same amount of a biodegradable thermoplastic polymer and a filler that is subsequently heat formed into a final product.
REFERENCES:
patent: 2629649 (1953-02-01), Wachter et al.
patent: 2711360 (1955-06-01), Wachter et al.
patent: 2717843 (1955-09-01), Wachter et al.
patent: 2739871 (1956-03-01), Senkus
patent: 2829080 (1958-04-01), Fessler et al.
patent: 2986447 (1961-05-01), Raifsnider
patent: 3080211 (1963-03-01), Fessler et al.
patent: 3110684 (1963-11-01), Miller
patent: 3304267 (1967-02-01), Miller
patent: 3398095 (1968-08-01), Judd
patent: 3433577 (1969-03-01), Shick
patent: 3626083 (1971-12-01), Minter
patent: 3785975 (1974-01-01), Humphrey
patent: 3967926 (1976-07-01), Rozenfeld et al.
patent: 4051066 (1977-09-01), Miksic et al.
patent: 4098720 (1978-07-01), Hwa
patent: 4217216 (1980-08-01), Lipinski
patent: 4626283 (1986-12-01), Martins et al.
patent: 4782106 (1988-11-01), Fricke et al.
patent: 4891404 (1990-01-01), Narayan et al.
patent: 4944916 (1990-07-01), Franey
patent: 4973446 (1990-11-01), Bernhard et al.
patent: 4973448 (1990-11-01), Carlson et al.
patent: 4983661 (1991-01-01), Ali et al.
patent: 5037708 (1991-08-01), Davitz
patent: 5053482 (1991-10-01), Tietz
patent: 5097004 (1992-03-01), Gallagher et al.
patent: 5097005 (1992-03-01), Tietz
patent: 5139700 (1992-08-01), Miksic et al.
patent: 5154886 (1992-10-01), Franey et al.
patent: 5171308 (1992-12-01), Gallagher et al.
patent: 5180762 (1993-01-01), Canova
patent: 5209869 (1993-05-01), Miksic et al.
patent: 5219646 (1993-06-01), Gallagher et al.
patent: 5264030 (1993-11-01), Tanabe et al.
patent: 5292783 (1994-03-01), Buchanan et al.
patent: 5320778 (1994-06-01), Miksic et al.
patent: 5324448 (1994-06-01), Mayeaux
patent: 5344589 (1994-09-01), Miksic et al.
patent: 5446079 (1995-08-01), Buchanan et al.
patent: 5462983 (1995-10-01), Bloembergen et al.
patent: 5500465 (1996-03-01), Krishnan et al.
patent: 5559171 (1996-09-01), Buchanan et al.
patent: 5580911 (1996-12-01), Buchanan et al.
patent: 5593624 (1997-01-01), Lewis
patent: 5599858 (1997-02-01), Buchanan et al.
patent: 5715945 (1998-02-01), Chandler
patent: 5801224 (1998-09-01), Narayan et al.
patent: 5817195 (1998-10-01), Davitz
patent: 5817721 (1998-10-01), Warzelhan et al.
patent: 5855975 (1999-01-01), Miksic et al.
patent: 5863991 (1999-01-01), Warzelhan et al.
patent: 5871668 (1999-02-01), Heimann et al.
patent: 5880078 (1999-03-01), Bevilacqua, Jr. et al.
patent: 5882441 (1999-03-01), Davitz
patent: 5883199 (1999-03-01), McCarthy et al.
patent: 5900322 (1999-05-01), Buchanan et al.
patent: 5906783 (1999-05-01), Narayan et al.
patent: 5916372 (1999-06-01), Bevilacqua, Jr. et al.
patent: 5928796 (1999-07-01), Heimann et al.
patent: 5938976 (1999-08-01), Heimann et al.
patent: 5958115 (1999-09-01), Böttcher et al.
patent: 5969089 (1999-10-01), Narayan
patent: 5981619 (1999-11-01), Shikinami et al.
patent: 5983598 (1999-11-01), Quinones
patent: 6010984 (2000-01-01), Heimann et al.
patent: 6010985 (2000-01-01), Heimann et al.
patent: 6017857 (2000-01-01), Heimann et al.
patent: 6028160 (2000-02-01), Chandler et al.
patent: 6054512 (2000-04-01), Nelson et al.
patent: 6080334 (2000-06-01), Heimann et al.
patent: 6139652 (2000-10-01), Carrano et al.
patent: 6156929 (2000-12-01), Chandler et al.
patent: 6165284 (2000-12-01), Shubkin
patent: 6190779 (2001-02-01), Heimann et al.
patent: 6201034 (2001-03-01), Warzelhan et al.
patent: 6224957 (2001-05-01), Crook et al.
patent: 6242371 (2001-06-01), Quinones
patent: 6316392 (2001-11-01), Heimann et al.
patent: 6321907 (2001-11-01), Honstrater
patent: 6331509 (2001-12-01), Heimann et al.
patent: 6414108 (2002-07-01), Warzelhan et al.
patent: 7256223 (2007-08-01), Mohanty et al.
patent: 2003/0031583 (2003-02-01), Reinhard
patent: 2003/0220436 (2003-11-01), Gencer
patent: 2004/0063837 (2004-04-01), Kubik et al.
patent: 2004/0069972 (2004-04-01), Kubik et al.
patent: 2004/0248486 (2004-12-01), Hodson
patent: 2005/0182196 (2005-08-01), Khemani et al.
patent: 0 366 305 (1990-05-01), None
patent: 1 389 630 (2004-02-01), None
patent: 48857 (1989-07-01), None
patent: 02/27069 (2002-04-01), None
patent: 03/060197 (2003-07-01), None
patent: 03/062313 (2003-07-01), None
patent: 03/062346 (2003-07-01), None
BASF, Product Information, Apr. 2007, Version 1.0, Ecoflex® Batch AB—Antiblocking agents for Eccoflex® F BX 7011—the biodegradable Polyester for compostable film.
Balakrishnan Sunder
Gencer Mehmet A.
Kubik Donald A.
Narayan Ramani
Cain Edward
Hudak, Shunk & Farine Co. LPA
Northern Technologies International Corp.
LandOfFree
Biodegradable polymer masterbatch, and a composition derived... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Biodegradable polymer masterbatch, and a composition derived..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Biodegradable polymer masterbatch, and a composition derived... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2665126