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. 05, 1999
Filed:
Jan. 27, 1998
Applicant:
Inventor:
John C Saam, Midland, MI (US);
Assignee:
Saam Associates, Midland, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ; C08G / ;
U.S. Cl.
CPC ...
524800 ; 528274 ; 528302 ; 528303 ; 528307 ; 528308 ; 525437 ; 525448 ; 524601 ; 524742 ; 524745 ; 524755 ;
Abstract
A method wherein polyesters are prepared under mild conditions by directly condensing hydroxycarboxylic acids or mixtures of polyfunctional alcohols and carboxylic acids in hydrophobic media using heterogeneous catalysts that can form a hydrophilic phase. The systems are inverse emulsions, inverse microemulsions and solid-in-liquid dispersions.