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Polyether and its production method

  • US 6,815,523 B2
  • Filed: 03/13/2003
  • Issued: 11/09/2004
  • Est. Priority Date: 03/15/2002
  • Status: Expired due to Fees
First Claim
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1. A polyether having a repeating unit of the following formula (1):

  • embedded imagewherein R1 to R3 independently represent a hydrogen atom, a halogen atom, or a substituent, or two of R1 to R3 may be mutually bonded to form a ring;

    R4 denotes hydrogen atom, an alkyl group with 1 to 10 carbons which may be substituted, a cycloalkyl group with 6 to 10 carbons which may be substituted, an aromatic ring with 6 to 14 carbons which may be substituted, a trialkylsilyl group which may be substituted, or a hydroxyalkyl; and

    Ar represents a divalent aromatic group.

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