Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Reexamination Certificate
2007-06-19
2008-11-04
Woodward, Ana L (Department: 1796)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
C525S165000, C525S166000, C525S176000, C525S179000, C525S199000, C525S200000, C525S326200
Reexamination Certificate
active
07446148
ABSTRACT:
Extrusion processability of non-fluorinated melt-processable polymers is improved by introducing a fluoropolymer process aid by means whereby the weight average particle size of the fluoropolymer is greater than 2 microns as it reaches the extruder die entrance.
REFERENCES:
patent: 3125547 (1964-03-01), Blatz
patent: 3334157 (1967-08-01), Larsen
patent: 4035565 (1977-07-01), Apotheker et al.
patent: 4243770 (1981-01-01), Tatemoto et al.
patent: 4740341 (1988-04-01), Chu
patent: 4855360 (1989-08-01), Duchesne et al.
patent: 4904735 (1990-02-01), Chapman, Jr. et al.
patent: 5010130 (1991-04-01), Chapman, Jr. et al.
patent: 5013792 (1991-05-01), Chapman, Jr. et al.
patent: 5015693 (1991-05-01), Duchesne et al.
patent: 5081188 (1992-01-01), Kim
patent: 5132182 (1992-07-01), Grosse-Puppendahl et al.
patent: 5350817 (1994-09-01), Winter et al.
patent: 5459187 (1995-10-01), Taylor et al.
patent: 5550193 (1996-08-01), Chiu et al.
patent: 5587429 (1996-12-01), Priester
patent: 5707569 (1998-01-01), Priester et al.
patent: 5710217 (1998-01-01), Blong et al.
patent: 5718974 (1998-02-01), Kmiec
patent: 5830947 (1998-11-01), Blong et al.
patent: 5854352 (1998-12-01), Chisholm et al.
patent: 5955556 (1999-09-01), McCarthy et al.
patent: 5962140 (1999-10-01), Rajagopalan
patent: 6048937 (2000-04-01), Bauer et al.
patent: 6048939 (2000-04-01), Priester
patent: 6277919 (2001-08-01), Dillon et al.
patent: 6593400 (2003-07-01), Drummond
patent: 6696526 (2004-02-01), Kaulbach et al.
patent: 6780481 (2004-08-01), Lavallee et al.
patent: 2264463 (2000-09-01), None
patent: 0362868 (1990-11-01), None
patent: 1597179 (1981-09-01), None
patent: 2343896 (2000-05-01), None
patent: 2000026616 (2000-01-01), None
patent: WO 9945065 (1999-09-01), None
patent: WO 0142363 (2001-06-01), None
Dynamar™ Polymer Processing Additives Direct Addition During Resin Manufacture, Dyneon 2000, Dec. 2000, 98-0504-1088-9.
Dynamar™ Polymer Processing Additive Optical Microscopy Method for Dispersion Analysis in Polyolefins, Dyneon 1997, pp. 1-4, 98-0504-0270-4.
R. J. Athey, R. C. Thamm, R. D. Souffie, and G. R. Chapman, Viton® Free Flow—The Processing Behavior of Polyolefins Containing a Fluoroelastomer Additive, DuPont Dow Elastomers Technical Information, May 1992, pp. 1-7, H-284351.
Viton® Free Flow—Masterbatch, DuPont Dow Elastomers Technical Information, May 1992, H-28357-1.
G. R. Chapman, D. E. Priester, and R. D. Souffie, Viton® Free Flow—Advances in the Use of Fluoroelastomers as Process Aids for Polyolefins, DuPont Dow Elastomers Technical Information, May 1992, pp. 1-5, H-28437-1.
Viton® Free Flow—Mechanism, DuPont Dow Elastomers Technical Information, May 1991, H-28355.
D. E. Priester, Dr. K. M. Stika, G. R. Chapman, R. S. Mc Minn and Dr. P. Ferrandez, Quality Control Techniques for Processing Additives, Antec /93, pp. 2528-2533.
R. J. Athey, R. C. Thamm, R. D. Souffie, and G. R. Chapman, The Processing Behavior of Polyolefins Containing a Fluoroelastomer Additive, Antec '86, pp. 1149-1153.
Tone® Polymers P-767 and P-787 High Molecular Weight Caprolactone Poplymers, 1999 Union Carbide, Jul. 1999, UC-2032, pp. 1-16.
Derwent Abstract—German Patent Application DE 19549389, published Jul. 17, 1997.
Derwent Abstract—Japanese Patent Application Kokai 7290550, published Nov. 7, 1995.
K. Fronek, B. Johnson, T. Blong, J. Kunde, D. Duchesne, Tailoring Processing Additives for High Density Polyethylene Applications, Antec '90, 1172-1177.
K. P. Migler, C. Lavallee, M. P. Dillon and S. S. Woods, C. L. Gettinger, Visualizing the Elimination of Sharkskin Through Fluoropolymer Additives: Coating and polymer-polymer slippage, The Society of Rheology, Inc., Mar./Apr. 2001, 565-581, J. Rheol. 45(2).
Viton Fluorelastomer in Applications Regulated by the Food and Drug Administration, DuPont Dow Elastomers Technical Information, Oct. 1990, H-07906-1.
Derwent Abstract—Japanese Patent Application Kokoku 70030574B, published 1970.
Derwent Abstract—Japanese Patent Application Kokai 62064847A, published Mar. 23, 1987.
Chapman, Jr. George Richard
Oriani Steven Richard
DuPont Performance Elastomers LLC
Woodward Ana L
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