Process for producing an isocyanurate derivative
Patent 6177541 Issued on January 23, 2001. Estimated Expiration Date: 
July 29, 2019. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
July 29, 2019. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesWater-soluble soldering flux and paste solder using the flux Resinous substance Method for producing purified epoxy compound Patent #: 5892065 InventorsAssigneeApplicationNo. 362910 filed on 07/29/1999US Classes:528/487, Contacting with sulfur or phosphorus-containing material528/72, Reactant contains at least one phosphorus atom528/80, With reactant compound containing at least two -C-C(=X)-X-C groups and which compound is devoid of C-NH, C=NH or C-N(H)-H groups528/287, Phosphorus-containing reactant528/422, NITROGEN-CONTAINING REACTANT528/423, Reactant contains nitrogen as a ring member of a heterocyclic ring528/503Temperature maintaining, heating or coolingExaminersPrimary: Truong, DucAttorney, Agent or FirmInternational ClassesC08F 006/06C08G 018/82 Foreign Application Priority Data1998-08-20 JPAbstractA process for producing an isocyanurate derivative of the formula (1): ##STR1##wherein one each of X1, X2, of Y1, Y2 and of Z1, Z2, a R COO group and the other is a OH group and each R is a C1-7 organic group, having an ionic chlorine atom content of from 0.1 to 5 ppm, which comprises reacting (A) tris-(2,3-epoxypropyl) isocyanurate containing from 10 to 3,000 ppm of hydrolyzable chlorine and (B) a carboxyl group-containing compound, in the presence of (C) an arylphosphine and/or a phosphonium salt comprising a non-halogen anion, until the concentration of the epoxy group in the reaction solution decreases to a 0.3 to 0.6 eq/kg, and then maintaining the reaction solution at 80 to 130° C. for H hours, where 0.2×2,5nࣘHࣘ2×2.5n, where n=0.1(110-T), where T is the temperature (° C.), to bring the epoxy group concentration in the reaction solution to a level of less than 0.1 eq/kg.Field of SearchNITROGEN-CONTAINING REACTANTReactant contains nitrogen as a ring member of a heterocyclic ring Contacting with sulfur or phosphorus-containing material Temperature maintaining, heating or cooling Reactant contains at least one phosphorus atom With reactant compound containing at least two -C-C(=X)-X-C groups and which compound is devoid of C-NH, C=NH or C-N(H)-H groups Phosphorus-containing reactant | |
