Fluoropolymers
Assignee3M Innovative Properties Company
InventorsWerner M. A. Grootaert, William D. Coggio, Klaus Hintzer, Robert E. Kolb, Gernot Löhr
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Abstract
Curable fluoroelastomer compositions having improved compression set after curing are provided, as well as compositions that are of relatively high purity. These compositions include a hydrogen-containing fluoroelastomer having interpolymerized units derived from a cure-site monomer, a curative (optionally with a co-agent), and an organo-onium. When the fluoroelastomer contains units derived from vinylidene fluoride, the composition is essentially free from an inorganic acid acceptor. Methods of improving the compression of cured fluoroelastomer and cured fluoroelastomers having improved compression set are also provided.
Claims11
A curable fluoropolymer composition comprising:
- a) hydrogen-containing fluoroelastomer having units of a cure-site monomer;
- b) a peroxide curative;
- c) optionally, a co-agent for the curative;
- and
- d) a non-fluorine-containing organo-onium compound.
A curable fluoropolymer composition comprising:
- a) a high purity, hydrogen-containing fluoroelastomer having units of a cure-site monomer;
- b) a peroxide curative;
- c) optionally, a co-agent for the curative;
- and
- d) a non-fluorine-containing organo-onium compound.
Dependencies are inferred from the claim text.