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:
Jul. 13, 1976
Filed:
May. 24, 1973
Don N Gray, Sylvania, OH (US);
Owens-Illinois, Inc., Toledo, OH (US);
Abstract
The application discloses polymers and methods of making same in which a chlorine atom of a chloromethyl pendant group of a polymer such as a chloromethylated copolymer of styrene and divinylbenzene is substituted with a derivative of malonic acid having a protected amino group on the alpha-carbon atom and two carboxyl groups or precursors thereof to form, via several steps, the alpha-amino acid derivative of the starting polymer. These polymers are used, for instance, as ion exchange resins, as substrates for affinity chromotography, and as a starting resin for solid peptide synthesis. The resultant polymer is also used as a starting material to make a polymer with a pendant group that is a derivative of oxazolidone-2,5-dione, substituted at the 4-position. These polymers are used, for example, as the matrix for solid phase peptide synthesis and as the starting resin for solid phase peptide degradation.