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Chirally nematic polyesters

  • US 6,291,629 B1
  • Filed: 08/06/1999
  • Issued: 09/18/2001
  • Est. Priority Date: 02/06/1997
  • Status: Expired due to Fees
First Claim
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1. A chiral nematic polyester with flexible chains which comprise isosorbide, isomannide and/or isoidide units and, for flexibilization of the chains, contain at least one unit derived from a member selected from the group consisting of(a) aliphatic dicarboxylic acids, (b) aromatic dicarboxylic acids with a flexible spacer, (c) α



  • -alkanediols, and (d) condensates of a polyalkylene terephthalate or polyalkylene naphthalate with an acylated diphenol and an acylated isosorbide.

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