Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Patent
1998-08-25
2000-09-05
Wu, David W.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
526160, 5263486, 526352, 526943, 526113, 526118, 525240, 556 32, 556138, C08F 426, C08L 2306
Patent
active
061144835
ABSTRACT:
Mixtures of different polyolefins or branched polyolefins may be made by direct, preferably simultaneous, polymerization of one or more polymerizable olefins using two or more transition metal containing active polymerization catalyst systems, one of which contains preferably late transition metals complexed to selected ligands. The polyolefin products may have polymers that vary in molecular weight, molecular weight distribution, crystallinity, or other factors, and are useful as molding resins and for films.
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Arthur Samuel David
Coughlin Edward Bryan
Ittel Steven Dale
E. I. Du Pont de Nemours and Company
Harlan R.
Wu David W.
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