Abstract: Provided is a method of manufacturing a perhalogenated elastomer comprising using an onium compound to coagulate a latex comprising polymer particles, the polymer particles consisting essentially of interpolymerized units of one or more perhalogenated comonomer(s) and at least one cure site monomer, wherein the coagulation is performed essentially free of metal ions and metal salts. Also provided is an elastomeric composition comprising a curable perhalogenated elastomer comprising interpolymerized units derived from a nitrogen-containing cure site monomer and coagulated with an onium compound, wherein the elastomer is capable of curing without adding further components and wherein the composition is essentially free of metal ions and metal salts. Also provided are fluoropolymer articles and methods of making fluoropolymer compositions and articles.
Type:
Grant
Filed:
December 29, 2004
Date of Patent:
December 4, 2007
Assignee:
3M Innovative Properties Company
Inventors:
Guy Van Gool, Alain Verschuere, Werner M. A. Grootaert
Abstract: A fluoropolymer having pendant amidoxime groups, pendant amidrazone groups, or combinations thereof is provided. Also provided are methods of making such fluoropolymers, and compositions and articles containing such fluoropolymers.
Type:
Grant
Filed:
December 21, 2004
Date of Patent:
November 27, 2007
Assignee:
3M Innovative Properties Company
Inventors:
Werner M. A. Grootaert, Klaus Hintzer, Kai Helmut Lochhaas, Franz Maerz
Abstract: Solid phase extraction articles, well-less filtration devices, and methods of manufacturing the articles and devices are disclosed. Methods of extracting analytes from samples using the articles and devices are also disclosed. The articles, devices and methods include a solid phase extraction medium (SPE medium) that incorporates thermoplastic material, e.g., in the form of thermoplastic particles enmeshed within a fibril matrix.
Abstract: A catalyst is preparable from a first component represented by R?C(CF2R)O?Q+ and a second component (NCCFR?)bZ. The catalyst may be combined with a fluoropolymer having nitrogen-containing cure-sites to form a curable composition that is useful for preparing fluoroelastomer compositions.
Type:
Grant
Filed:
August 25, 2005
Date of Patent:
November 13, 2007
Assignee:
3M Innovative Properties Company
Inventors:
Werner M. A. Grootaert, Miguel A. Guerra