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ESPECIALIDADES PARA LA CONSTRU
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ESPECIALIDADES PARA LA CONSTRU
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Application filed by ESPECIALIDADES PARA LA CONSTRUfiledCriticalESPECIALIDADES PARA LA CONSTRU
Priority to ES8701733ApriorityCriticalpatent/ES2006760A6/es
Publication of ES2006760A6publicationCriticalpatent/ES2006760A6/es
Chemical And Physical Treatments For Wood And The Like
(AREA)
Treatments Of Macromolecular Shaped Articles
(AREA)
Abstract
PROCEDIMIENTO PARA LA PROTECCION DE LA MADERA. COMPRENDE HACE REACCIONAR LA LIGINA Y LA CELULOSA DE 100 PARTES EN PESO DE LA MADERA CON 5 PARTES EN PESO DE ACIDOS GRASOS DE CADENA CARBONADA COMPRENDIDA ENTRE 10 Y 18 CARBONOS EN PRESENCIA DE 0,06, PARTES DE ACIDO SULFURICO DILUIDOI (1:1) EN AGUA BAJO VACIO DE 400 MM. DE HG. A TEMPERATURA DE 150JC DURANTE 3 HORAS Y MEDIANTE SUBSIGUIENTES REACCION CON 4 PARTES DE ACIDO SULFURICO CONCENTRADO DURANTE 2 HORAS, A 160JC Y POSTERIOR LAVADO CON TOLUENO Y NEUTRALIZACION CON SOLUCION DE CARBONATO SODICO 1:1 EN AGUA Y DEJANDOSE SECAR AL AMBIENTE Y RECUBRIENDO POR ULTIMO LA MADERA TRATADA CON UN POLIMERO PLASTICO.
ES8701733A1987-06-121987-06-12Procedimiento para la proteccion de la madera
ExpiredES2006760A6
(es)
Process for bleaching cellulosic fibre materials using oligomers of phosphonic acid esters as stabilisers in alkaline, peroxide-containing bleaching liquors