Patent · US Expired

Fluorene derivatives and their polymers

US6824709B2 · kind B2 · utility

18Cited by
3References
38Claims
0Family size

Assignees

Inventor

Key dates

Filing dateDec 12, 2002
Grant dateNov 30, 2004
Priority date
Expiry dateDec 12, 2022

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC09K2323/02
  • WIPO fieldBasic materials chemistry
  • WIPO sectorChemistry

Abstract

Provided are a fluorene derivative represented by Formula (1) and a polymer thereof: wherein at least one of A1, A2 and A3 is a group represented by Formula (2), and the others are 1,4-cyclohexylene, 1,4-cyclohexenylene, 1,4-phenylene, pyridine-2,5-diyl, pyridazine-3,6-diyl, pyrimidine-2,5-diyl or dioxane-2,5-diyl; m, n and p are independently 0 or 1; R1 is —CN, —CF3, —CF2H, —CFH2, —OCF3, —OCF2H, —N═C═O, —N═C═S, —F, —Cl, or alkyl in which one hydrogen may be replaced by (meth)acryloyloxy or vinyloxy and optional —CH2— may be replaced by —O—, —S—, —CF2—, —CH═CH—, —COO—, —OCO— or —CO—; R2 is hydrogen or methyl; Z1 to Z3 are independently a single bond, —O—, —COO—, —OCO—, —CF2O—, —OCF2—, —CH2O—, —OCH2—, —CH2CH2—, —(CH2)4—, —CH═CH—, —CF═CF— or —C≡C—; q is an integer of 0 to 10; and r is 0 or 1: wherein two X1's are independently hydrogen, fluorine or …

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.