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. 19, 1987
Filed:
Dec. 14, 1984
Jerald K Rasmussen, Stillwater, MN (US);
Alan R Katritzky, Gainesville, FL (US);
Larry R Krepski, White Bear Lake, MN (US);
Howell K Smith, II, Lauderdale, MN (US);
Steven M Heilmann, North St. Paul, MN (US);
Kumars Sakizadeh, Gainesville, FL (US);
Minnesota Mining and Manufacturing Company, St. Paul, MN (US);
Abstract
A novel class of heterocyclic polymers and copolymers containing the 2-imidazolin-5-one ring structure is described. These polymers are prepared by reaction of bisazlactones and diamines, with or without suitable condensation monomers; the resultant polyamides are then thermally cyclodehydrated in the presence of a catalyst to produce the imidazolinone-containing polymers. Many of the poly(imidazolinones) are water soluble and therefore find utility in various aspects of water treatment, or in paper or fabric sizing.