| Patent Number |
Title Of Patent |
Date Issued |
| 6777508 |
Catalysts for the polymerization of olefins |
August 17, 2004 |
| Disclosed are catalysts for the polymerization of alpha-olefins which comprise the reaction product of: (a) an Al-alkyl compound; (b) a silicon compound containing at least one Si--OR or Si--OCOR or Si--NR.sub.2 bond, R being a hydrocarbyl radical; (c) a solid comprising, as essenti |
| 6515085 |
Components and catalysts for the polymerization of olefins |
February 4, 2003 |
| Catalyst-forming components and catalysts for the polymerization of olefins based on said components are disclosed. The catalysts comprise the reaction product of: (a) an Al alkyl compound; (b) a silicon compound containing at least a Si--OR or Si--OCOR or Si--NR.sub.2 bond, R bein |
| 6194342 |
Components and catalysts for the polymerization of olefins |
February 27, 2001 |
| The present invention relates to supported catalysts for the polymerization of alpha-olefins which comprise the reaction product of:(a) an Al-alkyl compound;(b) a silicon compound containing at least one Si--OR or Si--OCOR or Si--NR.sub.2 bond, R being a hydrocarbyl radical;(c) a solid compr |
| 5618771 |
Components and catalysts for the polymerization of olefins |
April 8, 1997 |
| Disclosed are catalysts for the polymerization of alpha-olefins which comprise the reaction product of:(a) an Al alkyl compound;(b) a silicon compound containing at least a Si--OR or Si--OCOR or Si--NR.sub.2 bond, R being a hydrocarbyl radical;(c) a solid comprising, as essential support, a |
| 5539067 |
Components and catalysts for the polymerization of olefins |
July 23, 1996 |
| Disclosed are catalysts for the polymerization of alpha-olefins which comprise the reaction product of:(a) an Al alkyl compound;(b) a silicon compound containing at least a Si--OR or Si--OCOR or Si--NR.sub.2 bond, R being a hydrocarbyl radical;(c) a solid comprising, as essential support, a |
| 4925899 |
Bimodal star-block copolymers, showing excellent optical properties and resilience, and process |
May 15, 1990 |
| Bimodal star-block copolymers are disclosed containing from 60 to 90% by weight of an aromatic vinyl monomer and from 40 to 10% by weight of a conjugated diene, said copolymers having the general formula:wherein X is a polyfunctional radical, m and n are integers (being m.ltoreq.n) the s |
| 4762893 |
Block copolymers of olefines with vinyl aromatic monomers |
August 9, 1988 |
| Block copolymers of ethylene and/or alpha-olefins, in particular propylene, with vinyl aromatic monomers, comprising at least two polymeric blocks, one of which being a polyolefinic block and the other having a stereoregular structure and being formed by vinyl aromatic monomer units. |
| 4713416 |
Thermoplastic compositions including polyphenylenether, having improved impact strength and proc |
December 15, 1987 |
| Thermoplastic compositions based on polyphenylenether resins, endowed with improved mechanical, thermal and solvent-resistance characteristics, comprising, for 100 parts by weight of polyphenylenether resin:(a) from 0 to 90 parts by weight of a thermoplastic polymer other than polystyren |
