The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 24, 2013
Filed:
Oct. 10, 2008
Klaus Hintzer, Kasti, DE;
Kai H. Lochhaas, Neuoetting, DE;
Michael Jürgens, Neuoetting, DE;
Harald Kaspar, Burgkirchen, DE;
Tilman C. Zipplies, Burghausen, DE;
André Streiter, Mühldorf am Inn, DE;
Klaus Hintzer, Kasti, DE;
Kai H. Lochhaas, Neuoetting, DE;
Michael Jürgens, Neuoetting, DE;
Harald Kaspar, Burgkirchen, DE;
Tilman C. Zipplies, Burghausen, DE;
André Streiter, Mühldorf am Inn, DE;
3M Innovative Properties Company, Saint Paul, MN (US);
Abstract
There is provided a fluoroelastomer characterized by containing one type or more types of fluorinated emulsifiers represented by the formula: F—(CF)t-[O(CF)n]m-O—(CHF)o-(CF)p-X where m=0 to 3; n=1 to 5; o=0 to 1; p=1 to 3; t=1 to 10; and where when t=2 than o≠0; and further where X is selected from a group consisting of a carboxyl acid group and a salt of a carboxylic acid group. A method for preparing fluoroelastomers by using such fluorinated emulsifiers in emulsion polymerization of fluoromonomers and articles containing such fluoroelastomers are also provided. A fluorinated elastomer dispersion including an aqueous mixture of a crosslinkable fluorinated elastomer and such fluorinated emulsifiers are also provided. The fluoroelastomers created with such fluorinated emulsifiers are essentially free of cations other than NHand Hand have a low glass transition temperature.