- AMIDOAMINE AND POLYAMIDE CURING AGENTS, COMPOSITIONS, AND METHODS
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A composition including an amidoamine curing agent composition or a polyamide curing agent composition are disclosed. The composition includes the reaction products of (1) an amine component including at least one multifunctional amine of structure (I): wherein each R is independently H or CH2CH2CH2NH2; R1 is H, CH3CH2CH2N-, C1-C21 alkyl, or C1-C21 alkenyl; n is 2; and m is 1 or 2, with (2) a fatty acid or ester component selected from the group consisting of a dimer fatty acid or ester component, a monofunctional fatty acid or ester component, and combinations thereof. The amidoamine curing agent composition remains as liquid at ambient temperature.
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Paragraph 0076-0078
(2018/02/03)
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- Quinquedentate Co-ordination of Amino-substitiuted Tetraazacycloalkanes to Co(III). Part 3. Synthesis of an Unsymmetric Ligand and Crystal Structure of its cis-Chlorocobalt(III) Complex
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The unsymmetric pendant-arm macrocycle 9-methyl-9-nitro-1,4,7,11-tetraazacyclotetradecane (L1) was prepared by a copper(II)-directed condensation of 3,6-diaazanonan-1,9-diamine with nitroethane and formaldehyde.Reduction of the copper(II) complex of (L1) with zinc in aqueous acid produced the new potentially quinquedentate polyamine 9-methyl-1,4,7,11-tetraazacyclotetradecan-9-amine (L2).Reaction of L2 in water with cobalt(II) ion and air, followed by aqueous hydrochloric acid and equilibration with activated charcoal, yielded exclusively cis-2(Cl)>2 which crystallized in the monoclinic space group P21/c, with a = 12.745(5), b = 11.438(5), c = 14.414(8) Angstroem and β = 104.80(3) deg.The pendant primary amine and two adjacent secondary amines necessarily occupy an octahedral face, with the chloro ligand cis to the primary amine, and secondary amines adopt RRSS stereochemistries.The average Co-N distance is 1.96(0) Angstroem, and the Co-Cl distance is 2.252(1) Angstroem.Stereoretentive base hydrolysis (k(OH) 9100 dm3 mol-1 s-1) and other structural and physical properties are compared with those of the symmetric analogue 6-methyl-1,4,8,11-tetraazacyclotetradecan-6-amine.
- Lawrance, Geoffrey A.,Martinez, Manuel,Skelton, Brian W.,White, Allan H.
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p. 1649 - 1652
(2007/10/02)
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- CATALYTIC ALKYL GROUP EXCHANGE REACTION OF PRIMARY AND SECONDARY AMINES.
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It has been shown that primary and secondary amines undergo alkyl group exchange reactions upon treatment with palladium catalyst as depicted in an operationally simple and efficient reaction which provides a convenient method for synthesis of unsymmetrical amines. The application of the reaction for the preparation of various substituted amines and heterocyclic compounds such as hexahydropyrimidine tetrahydropyrimidine, imidazolidine, and imidazoles is described. The preparation of polyamines such as H//2N(CH//2)//mNH(CH//2)//nNH//2 (10) and H//2N(CH//2)//lNH(CH//2)//mNH(CH//2)//nNH//2 (l-n, equals 2,3; 11) is readily performed by the appadium-catalyzed reactions of azetidine (6) and aziridine (7) via azetine (9) and azirine intermediates. The mechanism the palladium-catalyzed reaction has been extensively studied on the carbonylation, racemization, and deuteurium-exchange reaction of (S)-( minus )- alpha -phenylethylamine (17).
- Murahashi,Yoshimura,Tsumiyama,Kojima
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p. 5002 - 5011
(2007/10/02)
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