3m Innovative Properties Company

Tamon Aoki

Yuta Suzuki

Klaus Hintzer

Tatsuo Fukushi

Florian D Jochum

Allen M Sohlo

Tilman C Zipplies

Miguel Antonio Guerra

Kai Helmut Lochhaas

Peter J Scott

Michael H Mitchell

Noriyuki Usami

Karl D Weilandt

Steffen Vowinkel

Qilin Chan

The composition includes a curable fluoropolymer having nitrogen-containing cure sites and a curative including an organo onium cation and an anion represented by Formula (I) or Formula (II). The composition is free of metal cations or has not more than 20 parts per million metal cations and free of silicon dioxide or has less than 0.5 percent by weight silicon dioxide, based on the total weight of the composition. In some cases, the composition consists of the curable fluoropolymer and the curative. Shaped articles including the composition, a fluoroelastomer prepared by curing the composition, a method of making a fluoroelastomer article, and a process for making the composition are also described.

Composition including curable fluoropolymer and curative and methods of making and using them

Described herein is a latex blend comprising (i) an amorphous perfluoropolymer and (ii) an aqueous dispersion of semi crystalline fluoropolymer particles, wherein the particles comprise a TFE homopolymer or a TFE copolymer comprising no more than 1 wt % of a second fluorinated monomer, wherein the semi crystalline fluoropolymer particles (a) have an MFI (372° C. with 2.16 kg) of less than 50 g/10 min or (b) are not melt processible and have an SSG of less than 2.190, wherein the semi crystalline fluoropolymer particles have an average diameter greater than 100 nm.

Latex blends of amorphous perfluorinated polymers and articles derived therefrom

A composition includes an amorphous fluoropolymer having at least one of: a segment represented by formula I: &#x2014;CF(R)&#x2014;(CX)&#x2014;(CXCXR)&#x2014;O&#x2014;R&#x2033;O&#x2014;(CXR'CX)&#x2014;(CX)&#x2014;CF(R&#x2032;)&#x2014; (I); or a terminal segment represented by formula III: R&#x2014;CF(I)&#x2014;(CX)&#x2014;(CXCXR)&#x2014;O&#x2014;R&#x2033;O&#x2014;(CXR&#x2032;CX)&#x2014;(CX)&#x2014;CF(R&#x2032;)&#x2014; (III), and fluoroplastic particles having a mean particle size of less than 500 nanometers. Each X is independently F, H, or Cl; Rand R&#x2032;are each independently F or a monovalent perfluoroalkyl having 1 to 3 carbon atoms; R is F or a partially fluorinated or perfluorinated alkyl having 1 to 3 carbon atoms; R&#x2033;is a divalent fluoroalkylene having 1 to 8 carbon atoms or a divalent fluorinated alkylene ether having 1 to 20 carbon atoms and at least one ether linkage; k is 0 or 1; and n, m, p, and q are each independently an integer from 0 to 5, with the proviso that when k is 0, n+m is at least 1 and p+q is at least 1. A method of making the composition is also provided.

Composition including amorphous fluoropolymer and fluoroplastic particles and methods of making the same

Described herein is a curable composition comprising: (a) a perfluoroelastomer gum having a carboxylic acid integrated absorbance ratio of at least 0.015; and (b) a compound comprising at least one oxazole moiety, and cured articles thereof.

Perfluoroelastomeric compositions comprising oxazoles

Growing community of inventors

Tokyo, Japan

Tamon Aoki