Novel iodine-containing compound, preparation thereof and block copolymer comprising the same
AssigneeDaikin Industries, Ltd.
InventorsMasayoshi Tatemoto, Yuji Yutani, Koji Fujiwara
Life of this patent
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Abstract
An iodine-containing compound consisting of at least two repeating units selected from the formulae: --(CH.sub.2 CF.sub.2 CF.sub.2 O).sub.a -- --(CHClCF.sub.2 CF.sub.2 O).sub.b -- --(CCl.sub.2 CF.sub.2 CF.sub.2 O).sub.c -- --(CHFCF.sub.2 CF.sub.2 O).sub.d -- --(CFClCF.sub.2 CF.sub.2 O).sub.e -- --(CF.sub.2 CF.sub.2 CF.sub.2 O).sub.f -- wherein a, b, c, d, e and f are each 0 or a positive integer and satisfy the following equations: 2.ltoreq.a+b+c+d+e+f.ltoreq.200 and 1.ltoreq.a+c+d+f and an iodine atom at at least one end of a molecule, which can provide a block copolymer which is useful as a grease.
Claims6
An iodine-containing compound consisting of at least two repeating units selected from the formulae:
- --(CH.sub.2 CF.sub.2 CF.sub.2 O).sub.a --
- --(CHClCF.sub.2 CF.sub.2 O).sub.b --
- --(CCl.sub.2 CF.sub.2 CF.sub.2 O).sub.c --
- --(CHFCF.sub.2 CF.sub.2 O).sub.d --
- --(CFClCF.sub.2 CF.sub.2 O).sub.e --
- --(CF.sub.2 CF.sub.2 CF.sub.2 O).sub.f --
- wherein a, b, c, d, e and f are each 0 or a positive integer and satisfy the following equations:
- 2 .ltoreq.a+b+c+d+e+f.ltoreq.200 and
- 1.ltoreq.a+c+d+f
- and an iodine atom at at least one end of a molecule.
A process for preparing an iodine-containing compound consisting of at least two repeating units selected from the formulae:
- --(CH.sub.2 CF.sub.2 CF .sub.2 O).sub.a --
- --(CHClCF.sub.2 CF.sub.2 O).sub.b --
- --(CCl.sub.2 CF.sub.2 CF.sub.2 O).sub.c --
- --(CHFCFhdCF.sub.2 O).sub.d --
- --(CFClCF.sub.2 CF.sub.2 O).sub.e --
- --(CF.sub.2 CF.sub.2 CF.sub.2 O).sub.f --
- wherein a, b, c, d, e and f are each ) a positive integer and satisfy the following equations:
- 2.ltoreq.a+b+c+d+e+f.ltoreq.200 and
- 1.ltoreq.a+c+d+f
- and an iodine atom at at least one end of a molecule, which comprises reacting a metal salt of a mono- or di-carboxylic acid comprising at least two repeating units selected from the formulae:
- --(CH.sub.2 CF.sub.2 CF.sub.2 O).sub.a --
- --(CHClCF.sub.2 CF.sub.2 O).sub.b --
- --(CCl.sub.2 CF.sub.2 CF.sub.2 O).sub.c --
- --(CHFCF.sub.2 CF.sub.2 O).sub.d --
- --(CFClCF.sub.2 CF.sub.2 O).sub.e --
- --(CF.sub.2 CF.sub.2 CF.sub.2 O).sub.f --
- wherein a, b, c, d, e and f are the same as defined above and iodine at a temperature of from 150.degree. to 250 .degree. C.
Dependencies are inferred from the claim text.