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:
May. 07, 2002
Filed:
Apr. 04, 2000
Eli Ruckenstein, Amherst, NY (US);
Hongmin Zhang, Amherst, NY (US);
The Research Foundation of State University of New York, Amherst, NY (US);
Abstract
The present invention relates to a continuous method of preparing a block-graft or star-shaped copolymer. This method involves providing a living polymer, mixing the living polymer with a first monomer under conditions effective to produce a block copolymer, wherein the first monomer includes a polymerization site and a polymerization initiation site, and mixing the block copolymer with a second monomer under conditions effective to produce a block-graft or star-shaped copolymer. The present invention also relates to a continuous method of preparing a graft or graft-block copolymer. This method involves mixing a first monomer and a second monomer under conditions effective to produce a copolymer of the first and second monomers, wherein the second monomer comprises a polymerization site and a polymerization initiation site, mixing the copolymer with a third monomer under conditions effective to produce a graft copolymer, and mixing the graft copolymer with a fourth monomer under conditions effective to produce a graft-block copolymer. The present invention also relates to graft, graft-block, block-graft, and star-shaped copolymers produced by the methods of the present invention.