The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 23, 2001
Filed:
Dec. 18, 1996
James C. W. Chien, Amherst, MA (US);
Amherst Polymer Technology, Inc., Amherst, MA (US);
Abstract
This invention relates to polymer blends and the process for preparing naturally compatibilized polyolefin blends using a “one-pot” polymerization of a single monomer, whereby two homopolymers having different structures are produced as well as a third block copolymer having alternating sequences of the two structural segments of the two homopolymers. The formation of the block copolymer is established by solvent extraction and,C-NMR spectroscopy. The catalyst compositions enabling the direct synthesis of naturally compatibilized polymer blend is prepared by combining four components. The first two components are organometallic complexes of Group IVB or VIIIB elements. The third component is a cocatalyst which irreversibly reacts with at least one ligand on the transition metal complexes. The fourth component is a hydrocarbyl or oxyhydrocarbyl compound of Group IIIA metals, which functions as a cross-over agent.