Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...
Reexamination Certificate
2011-06-28
2011-06-28
Jagannathan, Vasu (Department: 1764)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
C521S079000, C521S080000, C521S050000, C521S082000, C521S145000, C525S199000, C525S200000, C524S451000, C524S544000, C524S545000, C524S546000
Reexamination Certificate
active
07968613
ABSTRACT:
The present invention relates generally to the use of talc as a chemical foaming agent in perfluoropolymers to form foamable and foamed compositions. For example, in one aspect, a foamable composition is disclosed, which comprises (i) one or more base perfluoropolymers comprising at least 50 percent by weight of the composition, and (ii) talc blended with the one or more base perfluoropolymers, where the talc comprises 3 percent to about 15 percent by weight of the composition. Each of the perfluoropolymers is selected from the group consisting of tetrafluoroethylene/perfluoromethylvinyl ether copolymer (MFA), hexafluoropropylene/tetrafluoroethylene copolymer (FEP) and perfluoroalkoxy (PFA) and any blend thereof, where hydrogen-containing fluoropolymers are absent from the composition. The one or more base perfluoropolymers are melt-processable at one or more elevated processing temperatures of at least about 600° F. at which the talc functions as a chemical foaming agent for extrusion or mold processing of the composition into a foamed article having uniform cell structures.
REFERENCES:
patent: 3624250 (1971-11-01), Carlson
patent: 4029868 (1977-06-01), Carlson
patent: 4331619 (1982-05-01), Chung et al.
patent: 4394460 (1983-07-01), Chung et al.
patent: 4513129 (1985-04-01), Nakagawa et al.
patent: 4524194 (1985-06-01), Dumoulin
patent: 4711811 (1987-12-01), Randa
patent: 4739024 (1988-04-01), Moggi et al.
patent: 4982009 (1991-01-01), Hung
patent: 5310838 (1994-05-01), Hung et al.
patent: 5677404 (1997-10-01), Blair
patent: 5688885 (1997-11-01), Blair
patent: 5703185 (1997-12-01), Blair
patent: 5883197 (1999-03-01), Barbieri et al.
patent: 5912278 (1999-06-01), Venkataraman
patent: 5959022 (1999-09-01), Lin et al.
patent: 6064008 (2000-05-01), Craton
patent: 6139957 (2000-10-01), Craton
patent: 6231919 (2001-05-01), Craton
patent: 6232357 (2001-05-01), Barbieri et al.
patent: 6395795 (2002-05-01), Hrivnak
patent: 6506809 (2003-01-01), Hrivnak
patent: 6512013 (2003-01-01), Hrivnak
patent: 6573303 (2003-06-01), Liu et al.
patent: 6812314 (2004-11-01), Lunardi et al.
patent: 6946495 (2005-09-01), Zwynenburg et al.
patent: 7172719 (2007-02-01), Jackson et al.
patent: 7202418 (2007-04-01), Glew
patent: 7439297 (2008-10-01), Abusleme et al.
patent: 7465879 (2008-12-01), Glew
patent: 7473849 (2009-01-01), Glew
patent: 7473850 (2009-01-01), Glew
patent: 2005/0107517 (2005-05-01), Abusleme et al.
patent: 2005/0165165 (2005-07-01), Zwynenburg et al.
patent: 2005/0199415 (2005-09-01), Glew
patent: 2006/0237217 (2006-10-01), Glew
patent: 2006/0237218 (2006-10-01), Glew
patent: 2006/0237219 (2006-10-01), Glew
patent: 2007/0102188 (2007-05-01), Glew
patent: 2007/0203281 (2007-08-01), Alric et al.
patent: 2007/0209825 (2007-09-01), Glew
patent: 2008/0264670 (2008-10-01), Glew
patent: 2008/0283271 (2008-11-01), Kenny et al.
patent: 2009/0018225 (2009-01-01), Gemmel et al.
patent: 2009/0048359 (2009-02-01), Glew
patent: 2009/0069480 (2009-03-01), Zangara et al.
patent: 2010/0072644 (2010-03-01), Glew
patent: 2010/0151243 (2010-06-01), Glew
patent: 2010/0206609 (2010-08-01), Glew
patent: 2010/0243291 (2010-09-01), Glew
patent: 1520880 (2005-04-01), None
patent: 2008-060119 (2009-12-01), None
patent: 07-026050 (1995-01-01), None
patent: 07-026950 (1995-01-01), None
patent: 08-012796 (1996-01-01), None
patent: 09-055120 (1997-02-01), None
patent: 19-126631 (2007-05-01), None
patent: 10-0129862 (1998-04-01), None
patent: 10-01529862 (1998-04-01), None
patent: 10-2007-0004583 (2007-01-01), None
patent: 97/15623 (1997-05-01), None
patent: 97-15623 (1997-05-01), None
patent: 03-000792 (2003-01-01), None
patent: 2009/019209 (2009-02-01), None
patent: 2009/020554 (2009-02-01), None
patent: 2009/020555 (2009-02-01), None
patent: 2009020554 (2009-02-01), None
patent: 2009020555 (2009-02-01), None
Mineral Data Publishing, 2001, Talc.
AClyn flyer, Honeywell, 2003.
Glew, Charles A., The Preliminary Amendment to the title “Compositions, additives, and compounds for melt processable, foamable, and cellular fluoroploymers”, U.S. Appl. No. 12/590,471, filed Nov. 9, 2009, Preliminary Amendment filed Jan. 22, 2010 with the EFS ID No. 6861435, all pages, not published.
Horst Ulrich Reimer, “DuPont fluoropolymers for electrical insulation”, (press release) Mar. 2008, FLP-Wire-Apr. 2008, Dusseldorf, Germany.
Dupont, “DuPont (tm) Teflon (R) TE9810 Fluoropolymer Resin” Product Information Brochure, (Jul. 2007) RWJ36 Printed in U S.A., DuPont Fluoroproducts, P.O. Box 80713, Wilmington, DE 19880.
Dupont, “DuPont (tm) Teflon (R) TE9811 Fluoropolymer Resin” Product Information Brochure, (Jul. 2007) RWJ36 Printed in U.S.A., DuPont Fluoroproducts, P.O. Box 80713, Wilmington, DE 19880.
International Search Report for International Application No. PCT/EP2008/060119 by Authorized Officer Udo Puttins, completed Dec. 16, 2008 and mailed Dec. 29, 2008.
PCT Written Opinion of the International Searching Authority (PCT Rule 43bis.1) on Application No. PCT/EP2008/060119 by Authorized Officer Udo Puttins.
PCT International Preliminary Report on Patentability (Chapter I of the Patent Cooperation Treaty) (PCT Rule 44bis) on Application No. PCT/EP2008/060119 by Authorized Officer Yolaine Cussac, and dated Feb. 9, 2010.
Boyle Kenneth R.
Glew Charles A.
Hrivnak Jeffrey A
Kent Bradley Lane
Cable Components Group LLC
Jagannathan Vasu
Krylova Irina
Mollaaghababa Reza
Nutter & McClennen & Fish LLP
LandOfFree
Compositions for compounding, extrusion and melt processing... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Compositions for compounding, extrusion and melt processing..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Compositions for compounding, extrusion and melt processing... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2658379