Abstract: A composition comprised of a polyetherester and a radial teleblock copolymer. This composition exhibits the combination of a desirable overall balance of general mechanical properties and an unobviously high elastic recovery.
Type:
Grant
Filed:
July 16, 1976
Date of Patent:
March 8, 1977
Assignee:
Eastman Kodak Company
Inventors:
Robert W. Seymour, Freddie A. Shepherd, Theodore F. Gray, Jr.
Abstract: Disclosed is an acidolysis process for preparation of terephthalate, isophthalate, hydroquinone type polyesters wherein the acidolysis process is conducted within a critical temperature range. Use of the critical temperature range provides a polyester with a low enough apparent melt viscosity to be prepared in commercial, gravity flow reactors.
Abstract: Catalyst-inhibitor system for the polymerization of poly(ethylene terephthalate) having excellent properties for fabrication of fibers and films. The catalyst-inhibitor system comprises a combination of organic or inorganic salts of manganese and cobalt; titanium alkoxides; an antimony compound; and a phosphate ester. This invention also is directed to an improved method of preparing synthetic linear polyesters utilizing the new catalyst-inhibitor system.
Type:
Grant
Filed:
March 1, 1976
Date of Patent:
March 1, 1977
Assignee:
Eastman Kodak Company
Inventors:
Nicholas C. Russin, Ronald A. Tershansy, Charles J. Kibler
Abstract: Disclosed is a polyesterether having a critical range of poly(alkylene oxide) glycol. Articles molded from this polyesterether exhibit unobvious mold release characteristics.
Abstract: Disclosed is a polyesterether having a critical range of poly(alkylene oxide) glycol. Articles molded from this polyesterether exhibit unobvious mold release characteristics.
Abstract: In a transfer tail apparatus of the type disclosed in the Newman et al. U.S. Pat. application Ser. No. 524,902, filed Nov. 18, 1974, now U.S. Pat. No.