PROCEDIMIENTO PARA LA PREPARACION DE AGLUTINANTES AMIDICOS CARBOXILADOS

• Main Authors: KOOIJMANS, PETRUS GERARDUS, SIKKING, ARJAN, VAN IPEREN, ROELAND
• Format: Patent
• Language: Spanish
• Published: 16.10.1992
• Edition: 5
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COMPOSITIONS BASED THEREON; CORRECTING FLUIDS; DYES; FILLING PASTES; INKS; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; POLISHES; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF MATERIALS THEREFOR; WOODSTAINS

LA INVENCION PROPORCIONA UN PROCEDIMIENTO PARA LA OBTENCION DE LIGANTES DE AMIDA CARBOXILADA REDUCIBLES EN AGUA, QUE COMPRENDE LAS ETAPAS CONSECUTIVAS DE: A. REACCION DE: 1. UN COMPUESTO SUSTANCIALMENTE LIBRE DE EPOXI DE FORMULA GENERAL EMIPA = 18FR = 1HE = 15WI = 105TI = CHE, DONDE A ES EL RESIDUO ORGANICO DE UNA REACCION DE ABERTURA DE ANILLO DE UN GRUPO EPOXI VECINAL DE UN POLIEPOXI CON AMONIACO O UNA AMINA QUE TIENE DOS HIDROGENOS AMINO POR LO MENOS,; R1, R3 Y R4 SON HIDROGENO O GRUPO ALQUILO C1-C6, CON LA PREVISION DE QUE UNO POR LO MENOS DE R1, R3 Y R4 ES HIDROGENO, R2 ES UN GRUPO ALQUILENO C2-C12, X ES 0 O 1, Y ES UN NUMERO DE 0 A 4, CON 2. UN COMPUESTO MONO- O POLIESTER, QUE CONTIENE GRUPO CARBOXILO DERIVADO DE UN ACIDO DI O POLICARBOXILICO Y UN ALCOHOL POLIHIDRICO QUE TIENE POR LO MENOS UN GRUPO GLICOL POR MOLECULA, CON LA PREVISION DE QUE SOLO SE HA ESTERIFICADO UN GRUPO CARBOXILICO POR MOLECULA DE ACIDO DI- O POLICARBOXILICO Y EL GRUPO ESTER ES UN GRUPO (BETA)-HIDROXIESTER, A UNA TEMPERATURA EN EL INTERVALO DE 80 A 160 (GRADOS) C, Y B. NEUTRALIZACION DE GRUPOS CARBOXILO O GRUPOS AMINO RESIDUAL EN EL PRODUCTO DE LA ETAPA A. The invention provides a process for the preparation of water-reducible carboxylated amide binders comprising the consecutive steps: A. reacting: 1. a substantially epoxy-free compound of general formula wherein A is the organic residue of a ring opening reaction of a vicinal epoxy group of a polyepoxide with ammonia or an amine having at least two amino hdyrogens, R , R and R each is hydrogen or a C1-6 alkyl group, with the proviso that at least one of R , R and R is hydrogen, R is a C2-12 alkylene group, x is 0 or 1 and y is a number from 0 to 4, with 2. a carboxyl group-containing mono- or polyester compound derived from a di- or polycarboxylic acid and a polyhydric alcohol having at least one glycol group per molecule, with the proviso that only one carboxyl group per molecule of di- or polycarboxylic acid has been esterified and the or each ester group is a beta -hydroxyester group, at a temperature in the range of from 80 to 160 DEG C, and B. neutralizing the carboxylic groups or the residual amine groups in the product of step A. ,