Chemistry of carbon compounds – Miscellaneous organic carbon compounds
Patent
1977-01-13
1978-10-17
Levin, Stanford M.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
260 296NR, 260 312N, 260 314EP, 260 324, 260 326N, 260 328N, 260 332EP, 260 334EP, 260 336EP, 260836, 260837R, 428335, 526 16, 526 524, 526 525, 526317, 526328, 5263292, 5263295, C08F 832, C08L 2336, C08L 6300
Patent
active
041208390
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.
REFERENCES:
patent: 2912416 (1959-11-01), Newey
patent: 3388190 (1968-06-01), Bryant et al.
patent: 3406155 (1968-10-01), Azorlosa et al.
patent: 4018847 (1977-04-01), Messerly
Emmons William D.
Stevens Travis E.
Levin Stanford M.
Rohm and Haas Company
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