Polymers of propene

US6248829A · kind A · utility

Assignee

• BASF SE

Inventors

• David Fischer · Breunigweiler, DE
• John Russell Grasmeder · Sandbach, GB
• Heike Gregorius · Kastellaun, DE
• Stefan Seelert · Bischofswerda, DE
• Franz Langhauser · Bad Dürkheim, DE
• Wolfgang Micklitz · Neustadt, DE
• Klaus-Dieter Rumpler · Monsheim, DE

Key dates

• Filing date: Mar 17, 1999
• Grant date: Jun 19, 2001
• Expiry date: Mar 17, 2019

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L2314/06
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Polymers of propene consist of from 50 to 99.9% by weight of an isotactic propene copolymer (A') and from 0.1 to 50% by weight of a propene homopolymer or a propene copolymer (B'), where PA1 a) the propene copolymer (A') consists of from 80 to 99.9 mol % of propene and from 0.1 to 20 mol % of ethene and/or a C.sub.4 -C.sub.12 -1-olefin, at least 80% of all propene diads are isotactic meso diads, the propene copolymer (A') has a proportion (X.sub.S) of material soluble in xylene at 20.degree. C. which satisfies the inequality (1) EQU (X.sub.S)<542 400 exp (-0.1T.sub.M)+0.5 (1), PA1 the tensile modulus of elasticity (E) of the propene copolymer (A') in MPa, determined in accordance with ISO 527, obeys the inequality (2) EQU (E)>1.9.times.10.sup.-11 (T.sub.M).sup.6.34 +180 MPa (2), PA1 where in both inequalities (1) and (2) T.sub.M is the melting point in .degree. C., and PA1 b) the propene homopolymer or the propene copolymer (B') consists of from 80 to 100 mol % of propene and from 0 to 20 mol % of ethene and/or a C.sub.4 -C.sub.12 -1-olefin, at least 55% of all regioregular propene diads are isotactic meso diads, an enthalpy of fusion .DELTA.H.sub.m of less than 50 J/g is observed …