Shock-absorbing propylene polymer composite moldings

US5180628A · kind A · utility

Assignee

• BASF SE

Inventors

• Udo Haardt · Biblis, DE
• Erhard Seiler · Ludwigshafen, DE
• Hermann Tatzel
• Harald Schwager · Speyer, DE
• Friedrich Domas · Altlußheim, DE

Key dates

• Filing date: Jan 17, 1992
• Grant date: Jan 19, 1993
• Expiry date: Jan 17, 2012

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/249993
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

A shock-absorbing propylene polymer composite molding contains PA0 a. a layer with a thickness of from 0.5 to 10 mm which contains a propylene polymer having a melting point of from 130.degree. to 165.degree. C., PA0 b. an intermediate layer with a thickness of from 0.05 to 0.5 mm comprising a hot-melt adhesive based on an olefin copolymer having a melting point of from 90.degree. to 140.degree. C., PA0 c. a foam layer with a thickness of from 3 to 200 mm and a density of from 0.015 to 0.1 g/cm.sup.3 based on a propylene copolymer having a melting point of from 125.degree. to 155.degree. C., PA0 d. an intermediate layer with a thickness of from 0.05 to 0.5 mm comprising a hot-melt adhesive based on an olefin copolymer having a melting point of from 90.degree. to 140.degree. C., PA0 e. a layer with a thickness of from 0.5 to 10 mm which contains a propylene polymer having a melting point of from 130.degree. to 165.degree. C.