Borealis Technology Oy

Christer Lind

Bo Malm

Solveig Johansson

Amir K Karbasi

Cecilia Rydin

John Haugen

Pirjo Jaaskel&auml;inen

P&auml;ivi Huovinen

A coating composition, a process for producing it and substrate coated therewith are described. The composition comprises a multimodal ethylene polymer, which contains from 80 to 99.8% by weight of ethylene repeating units and from 0.2 to 20% by weight of C-C&#x3b1;-olefin repeating units, and is a blend of at least a first and a second ethylene polymer prepared by polymerization in the presence of a single site catalyst system. The blend has a density of 0.915-0.955 g/cm, a melt flow rate, MFR, of 0.028-1.5 g/10 min., a molecular weight distribution, M/M, of 3-10, and a CTL 5.0 MPa-value according to ISO 6259 of at least 500 hrs.

Coating composition, method of preparation thereof and substrate coated therewith

The present invention concerns nucleated propylene polymers having a xylene soluble fraction at 23&deg; C. of less than 2.5%, a crystallization temperature of over 124 &deg; C. and a tensile modulus of greater than 2,000 MPa. These polymers can be prepared by nucleating a propylene polymer with a polymeric nucleating agent containing vinyl compound units, and by polymerizing propylene optionally with comonomers in the presence of a Ziegler-Natta catalyst system primarily transesterified with a phthalic acid ester&mdash;a lower alcohol pair to provide said propylene polymer. The catalyst contains a strongly coordinating external donor.

Propylene polymers and products thereof

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Stora Höga, Sweden

Christer Lind