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:
Jun. 11, 1996
Filed:
May. 18, 1995
Applicant:
Inventor:
Vaughn M Nace, Lake Jackson, TX (US);
Assignee:
The Dow Chemical Company, Midland, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ; C08G / ;
U.S. Cl.
CPC ...
528354 ; 528357 ; 528358 ; 528361 ;
Abstract
The biodegradability of polyglycol-based block copolymers is improved by including in the copolymer a lactone. Representative of these biodegradable enhanced copolymers are those made of 1,2-butylene oxide and .epsilon.-caprolactone capped with a homopolymer block of ethylene oxide. The copolymers of this invention have many uses, such as nonionic surfactants, foam control agents, lubricants, and the like.