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:
Oct. 17, 1978
Filed:
Jan. 13, 1977
William D Emmons, Huntingdon Valley, PA (US);
Travis E Stevens, Ambler, PA (US);
Rohm and Haas Company, Philadelphia, PA (US);
Abstract
Novel, versatile aminolysis products are obtained by aminolyzing, with a polyamine of aliphatic nature, an oligomeric homopolymer of an alkyl methacrylate in which the alkyl group contains from 1 to 6 carbon atoms or an oligomeric copolymer of at least two alkyl methacrylates, such oligomers being produced from monomeric alkyl methacrylates by anionic polymerization to provide number average molecular weights in the range of 600 to 10,000 and preferably in the range of 1,000 to 5,000. Alternatively, an anionically polymerized homo-oligomer of a (C.sub.1 -C.sub.6)-alkyl acrylate or co-oligomer of at least two alkyl acrylates in which the alkyl in at least one monomer has from 1 to 6 carbon atoms in the co-oligomer, and the alkyl in the comonomers may have from 1 to 18 or more carbon atoms, are aminolyzed with a polyamine of aliphatic nature. Instead of oligomers obtained by anionic polymerization of esters of acrylic acid or of esters of methacrylic acid, there may be used in the aminolysis, oligomers of corresponding low molecular weight obtained by free radical polymerization, and in this version there may also be included copolymers (not obtainable by anionic polymerization) of an ester of methacrylic acid with an ester of acrylic acid and also copolymers of one or more such esters with monomers not of ester type, such as styrene. The aminolysis products have outstanding utility in the coatings field, particularly as the hardener for curing epoxy resins.