Copolymers of ethylene and 2,4,4-trimethylpentene-1

US4883853A · kind A · utility

Assignee

• Ruhrchemie Aktiengesellschaft · DE

Inventors

• John Hobes · Dinslaken, DE
• Wolfgang Payer · Ulm, DE
• Ludger Bexten · Hünxe, DE

Key dates

• Filing date: May 29, 1987
• Grant date: Nov 28, 1989
• Expiry date: May 29, 2007

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S526/913
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Novel copolymers of ethylene containing per 100 parts by weight ethylene 0.2 to 5.0 parts by weight of 2,4,4-trimethylpentene-(1) and optionally 2.0 to 20 parts by weight of vinyl ester or vinyl ether or ester of acrylic acid or methacrylic acid with alcohols of 1 to 8 carbon atoms having a melt index MFI (190/2.16) of 0.4 to 20 g/10 min. a density of 0.915 to 0.960 g/ml and an impact tensile strength of 850 to 2,600 mJ/mm.sup.2 and a process for their preparation useful for making transparent films.