| Patent Number |
Title Of Patent |
Date Issued |
| 7452953 |
Propylene random copolymer and process for the production thereof |
November 18, 2008 |
| The present invention relates to a process for preparing a propylene random copolymer comprising polymerization of propylene with a comonomer, said comonomer being ethylene or an .alpha.-olefin comprising at least four carbon atoms, in the presence of a catalyst in a multistage process |
| 6187869 |
Modifiers based on ethylenes or amorphous olefin elastomers for reducing the surface tack of amo |
February 13, 2001 |
| Modifiers based on high-pressure polyethylenes or low-pressure ethylene copolymers or highly amorphous olefin elastomers or mixtures of these with polyethylenes or isotactic polypropylenes are added to highly amorphous polypropylenes to reduce their surface tack. |
| 6103655 |
Carrier for olefin polymerization catalysts |
August 15, 2000 |
| Procedure for the preparation of a solid carrier for olefin polymerization catalysts, comprising the steps:a) impregnating a silica with Mg-chloride solubilized in ethylbenzoate, in the presence of further electron donors,b) optionally drying the impregnated silica obtained in (a) and im |
| 6096681 |
Carrier for olefin polymerization catalysts |
August 1, 2000 |
| Procedure for the preparation of a solid carrier for olefin polymerization catalysts, comprising the steps:a) impregnating a silica with a solution of Mg-chloride in the presence of electron donors,b) drying the impregnated silica obtained in (a) and impregnating it with a solution of Mg |
| 5705568 |
Polypropylenes obtainable by chemical degradation |
January 6, 1998 |
| New polypropylenes which are obtained by chemical degradation of elastic polypropylenes using organic peroxides. |
| 5686533 |
Polypropylenes having a reduced tendency to white fracture |
November 11, 1997 |
| Polypropylenes having a reduced tendency to white fracture, which containA) from 70 to 95% by weight of a highly isotactic polypropylene having anisotactic index of more than 90 and a melt flow index between 0.1 and 100 g/10 min, it being possible for the polypropylene to be a homopolymer |
| 5665820 |
Modified elastomeric polypropylenes |
September 9, 1997 |
| Elastomeric polypropylenes modified by grafting and blends thereof with isotactic polypropylenes modified by grafting, and the use thereof as compatibilizers or adhesion promoters for blends and metal composites. |
| 5629255 |
Highly active catalysts for olefin polymerization and a polymerization process using these catal |
May 13, 1997 |
| Highly active catalysts, for olefin polymerization, from tetraneophylzirconium and partly hydroxylated metal oxides from group IIa, IIIa, IVa or IVb of the Periodic Table, which are essentially free from by-products. |
| 5596076 |
Process for the preparation of elastomeric polypropylenes |
January 21, 1997 |
| Process for the preparation of elastomeric, non-agglomerated, powdery/crumbly polypropylene by polymerization of propylene, if appropriate together with other olefins as comonomers, in liquid propylene and subsequent precipitation of the polypropylenes formed with CO.sub.2 or a polar |
