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Curing agents for compounds

USP 10472494

 

What is claimed is:

1. An article, comprising a cured compound that, before curing, comprised: 

A) a fluoroelastomer comprising copolymerized units of: 

(1) one or more unsaturated fluorinated olefins, 

(2) one or more fluorovinyl ethers selected from the group consisting of perfluoro(alkyl vinyl) ethers, perfluoro(alkoxy vinyl) ethers, fluoro(alkyl vinyl) ethers, fluoro(alkoxy vinyl) ethers, and mixtures of these, and 

(3) one or more cure site monomer selected from the group consisting of nitrile-containing fluorinated olefins and nitrile-containing fluorinated vinyl ethers; and 

B) 0.1 to 10 weight percent of a curing agent of formula (I):

R₁N ═ CR₂R₃ (I) 

wherein: 

R₁ is H; 

R₂ is selected from the group consisting of NH₂, and NR₄R₅; 

R₃ is selected from the group consisting of SO₂H, NR₆R₇, 2-pyridine, and CH₂CONH₂;

R₄ is H; 

R₅ is selected from the group consisting of NH₂, and CN; 

R₆ is selected from the group consisting of H, CCONH₂; and 

R₇ is selected from the group consisting of COOC(CH₃)₃, NH₂, CH₂COOH, CNHNH₃⁺Cl⁻, p-phenylCN, COPh,

is selected from the group consisting of = 「からなる群から選択される」

マーカッシュと呼ばれる表現方法です。

化学系に限らず、機械分野などでも使われます。