The Penn State Research Foundation

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The Penn State Research Foundation University Park Pa

Louis M Wojcinski, Ii

Ayusman Sen

Shahid Murtuza

Shengsheng Liu

Smita Kacker

Jang Sub Kim

James H Pawlow

Ethylene and/or propylene are polymerized to form highly branched, liquid polymers by contacting ethylene and/or propylene monomer, in the presence of an inert reaction medium, with a catalyst system which comprises (1) an alkyl aluminum component, (2) an aluminum or gallium trihalide component, and, optionally, (3) a Group 4 metallocene dihalide component.

Preparation of highly branched, liquid polymers of ethylene and/or &agr;-olefins in the presence of aluminum-based catalyst systems

Ethylene and/or propylene are polymerized to form high molecular weight, linear polymers by contacting ethylene and/or propylene monomer, in the presence of an inert reaction medium, with a catalyst system which consists essentially of (1) an aluminum alkyl component, such as trimethylaluminum, triethylaluminum, triisobutylaluminum, tri-n-octylaluminum and diethylaluminum hydride and (2) a Lewis acid or Lewis acid derivative component, such as _B(C F ) , &lcub;(CH ) N(H)(C H )&rcub; &lcub;B(C F ) &rcub; , &lcub;(C H ) NH&rcub; &lcub;B(C F ) &rcub; , &lcub;(C F ) C&rcub; &lcub;B(C F ) &rcub; , &lcub;(C F ) C&rcub; &lcub;B(C F ) (Cl) &rcub;, (C H ) Al(OCH ), (C H ) Al(2,6-di-t-butyl-4-methylphenoxide), (C H )Al(2,6-di-t-butylphenoxide) , (C H ) Al(2,6-di-t-butylphenoxide), 2,6-di-t butylphenol.methyl-aluminoxane or an alkylaluminoxane, and which may be completely free any transition metal component(s).

Process for synthesizing linear polymers of ethylene and alpha-olefins

Oily hyperbranched polymers derived from ethylene, propylene, butene and/or a C,-C,[object Object]

Metal catalyzed synthesis of hyperbranched ethylene and/or &agr;-olefin polymers

Ethylene and/or propylene are polymerized to form high molecular weight, linear polymers by contacting ethylene and/or propylene monomer, in the presence of an inert reaction medium, with a catalyst system which consists essentially of (1) an aluminum alkyl component, such as trimethylaluminum, triethylaluminum, triisobutylaluminum, tri-n-octylaluminum and diethylaluminum hydride and (2) a Lewis acid or Lewis acid derivative component, such as B (C,F,),, &lsqb;(CH,),N (H) (C,H,)&rsqb;,&lsqb;B (C,F,)4&rsqb;,, &lsqb;(C,H,),NH&rsqb;,&lsqb;B C,F,),&rsqb;,,, &lsqb;C(C,F,),&rsqb;,&lsqb;B(C,F,),&rsqb;,, (C,H,),Al(OCH,), (C,H,),Al(2,6-di-t-butyl-4-methylphenoxide), (C,H,)Al(2,6 -di-t-butylphenoxide),, (C,H,),Al(2,6-di-t-butylphonoxide) , 2,6 -di-t-butylphenol&middot;methylaluminoxane or an alkylaluminoxane, and which may be completely free any transition metal component(s).

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State College, PA, United States of America

Louis M Wojcinski, Ii