Melt-processable block copolyesterimide and method for manufacturing it

US5677394A · kind A · utility

Assignee

• NESTE OY · FI

Inventors

• Frank Bohme · Dresden, DE
• Doris Pospiech · Dresden, DE
• Manfred Ratzsch · Dresden, DE
• Christer Bergstrom · Espoo, FI
• Mika Harkonen · Kihniö, FI
• Heli Alanko · Klaukkala, FI
• Pentti Passiniemi · Helsinki, FI

Key dates

• Filing date: Apr 28, 1995
• Grant date: Oct 14, 1997
• Expiry date: Apr 28, 2015

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L79/08
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A melt-processable block copolyesterimide comprising the repeating units (I), (II) and (III) and, optionally, a repeating unit (IV), wherein (I) is a repeating unit of the formula ##STR1## wherein R is an aliphatic polyether chain and/or a polysiloxane chain; (II) and (III) are repeating units of the formulas ##STR2## wherein Z is hydrogen, alkyl, alkoxy, aryl, halogen and w is zero or one; and (IV) is a repeating unit of the formula ##STR3## wherein Z' is hydrogen, alkyl, alkoxy, aryl or halogen and the phenylene ring is substituted in by Z' in the m- or p-positions. The repeating unit of formula (I) is present in an amount of 5 to 50 mole-%, the repeating unit of formula (II) is present in an amount of 10 to 80 mole-%, the repeating unit of formula (III) is present in an mount of 5 to 50 mole-% and the repeating unit of formula (IV) is present in an amount of 0 to 45 mole-% of the block copolyesterimide. The polymer according to the invention has liquid crystalline properties and it can be used as thermoplastic elastomer component of polymer compounds.