Polycarbonates, polyester carbonates and polyesters having branched terminal groups
AssigneeBayer Aktiengesellschaft
InventorsHelmut-Werner Heuer, Rolf Wehrmann, Alexander Meyer, Harald Pielartzik, Friedrich-Karl Bruder, Jos M. J. Paulusse
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Abstract
The use of phenols having a branched structure as terminal groups in polycarbonates, polyester carbonates and polyesters is disclosed. Also disclosed are polycarbonates, polyester carbonates and polyesters having such branched terminal groups, the process for their production and molded parts made therefrom.
Claims4
A phenol having the formula
- R1, R2, R7 independently one of the others denote H, linear or branched
- C1-C18 alkyl, Cl, or Br,
- X is single bond or a divalent radical,
- R3-R6 independently one of the others denote H, linear or branched C1-C18 alkyl, cyclic C5-C18 alkyl, phenyl, phenyloxy, phenyl carboxy, benzyl, benzyloxy, naphthyl, naphthyloxy or naphthylcarboxy radicals, excluding bis(C1-C18 alkyl phenyl)-4-hydroxyisophthalates, diphenyl hydroxyisophthalate, bis[(diphenyl oxycarbonyl) phenyl]hydroxyisophthalate, diphenyl oxyphenol, 3,5-dibenzoyl phenol, 4-methyl-2,6-dibenzoyl phenol, 2-methyl-4,6-dibenzoyl phenol and 3,5-bis(4-hydroxybenzoyl) phenol.
A method of using a phenol conforming to
- R1, R2, R7 independently one of the others denote H, linear or branched C1-C18 alkyl, Cl, or Br,
- X is a divalent radical selected from the group consisting of —CO2—, —O—, —CH2— and —CO—, and
- R3-R6 independently one of the others denote H, linear or branched C1-C18 alkyl, cyclic C5-C18 alkyl, phenyl, phenyloxy, phenyl carboxy, benzyl, benzyloxy, naphthyl, naphthyloxy or naphthylcarboxy radicals, excluding bis(C1-C18 alkyl phenyl)-4-hydroxylsophthalates, diphenyl hydroxyisophthalate, bis[(diphenyl oxycarbonyl) phenyl]hydroxyisophthalate, diphenyl oxyphenol, 3,5-dibenzoyl phenol, 4-methyl-2,6-dibenzoyl phenol, 2-methyl-4,6-dibenzoyl phenol and 3,5-bis(4-hydroxybenzoyl) phenol comprising producing a resin selected from the group consisting of polycarbonate, polyestercarbonate and polyester.
A polymeric resin selected from the group consisting of polycarbonate, polyester carbonate and polyester containing at least one structural unit conforming to
- wherein
- R1, R2, R7 independently one of the others denote H, linear or branched C1-C18 alkyl, Cl, or Br,
- X is a divalent radical selected from the group consisting of —CO2—, —O—, —CH2— and —CO—, and
- R3-R6 independently one of the others denote H, linear or branched C1-C18 alkyl, cyclic C5-C18 alkyl, phenyl, phenyloxy, phenyl carboxy, benzyl, benzyloxy, naphthyl, naphthyloxy or naphthylcarboxy radicals, excluding bis(C1-C18 alkyl phenyl)-4-hydroxyisophthalates, diphenyl hydroxyisophthalate, bis[((diphenyl oxycarbonyl) phenyl]hydroxyisophthalate, diphenyl oxyphenol, 3,5-dibenzoyl phenol, 4-methyl-2,6-dibenzoyl phenol, 2-methyl-4,6-dibenzoyl phenol and 3,5-bis(4-hydroxybenzoyl) phenol.
Dependencies are inferred from the claim text.