LIGNOCELLULOSIC MATERIALS WITH LIGNOCELLULOSIC FIBERS IN THE OUTER LAYERS AND EXPANDED PLASTICS PARTICLES PRESENT IN THE CORE, AND PROCESS AND USE THEREOF

    公开(公告)号:MY168545A

    公开(公告)日:2018-11-12

    申请号:MYPI2014001844

    申请日:2012-12-21

    Applicant: BASF SE

    Abstract: The present invention relates to lignocellulosic materials having a core and two outer layers, comprising in the core (A) 30% to 98% by weight of lignocellulose particles; (B) 1 % to 25% by weight of expanded plastics particles having a bulk density in the range from 10 to 150 kg/m3, (D) 1 % to 50% by weight of one or more binders selected from the group consisting of phenoplast resin, aminoplast resin, and organic isocyanate having at least two isocyanate groups, and (D) 0% to 30% by weight of additives and in the outer layers, (E) 70% to 99% by weight of lignocellulose fibers, (F) 1 % to 30% by weight of one or more binders selected from the group consisting of phenoplast resin, aminoplast resin, and organic isocyanate having at least two isocyanate groups, and G) 0% to 30% by weight of additives. (No Suitable Figure)

    Procedimiento para la preparación de soluciones de aminoplasto

    公开(公告)号:ES2621004T3

    公开(公告)日:2017-06-30

    申请号:ES14178524

    申请日:2014-07-25

    Applicant: BASF SE

    Abstract: Procedimiento para la preparación de soluciones de aminoplasto mediante cond ensación discontinua o continua de form adores de aminoplasto con formaldehido en una cascada de tanques con agitación conectados en serie con al menos tres dispositivos de tanques con agitación A, B Y e, caracterizado porque se hace reaccionar a) en el dispositivo A una mezcla que contiene formaldehído y urea en la proporción molar de 2,3: 1 a 2,9:1 yagua a un valor de pH de 6 a 8, ajustado por medio de una base, a una temperatura de 80 a 85' C, en cuyo caso el dispositivo A se compone de uno o varios tanques con agitación conectados en paralelo o en serie , b) en el dispositivo B a una proporción molar de formaldehído a urea de 1,9: 1 a 2,6:1, y el dispositivo B se compone de uno o de varios tanques con agitación , donde se disminuye la proporción molar de formaldehído a urea , ocasíonalmente agregando adicionalmente urea, por etapas a mínimo 1,9:1 , a un valor de pH de 3,5 a 5,5, el cual se mantiene casi constante, a una temperatura de 100 a 1 05' C y un ti empo de residencia medio de 10 a 90 min en todo el dispositivo B, c) en el dispositivo e a una temperatura de 90 a 100' C se eleva el valor de pH al menos 5,9 y se disminuye la proporción molar de formaldehído a urea a 1,7:1 hasta 1,4:1, en cuyo caso el dispositivo e se compone de uno o varios tanques con agitación y d) adicionando urea a temperaturas de 15 a 100' C se establece una proporción molar fin al de formaldehído a urea de 0,7:1 a 1,28: 1 y un valor de pH de al menos 7.

    Multilayer lignocellulose-containing moldings having low formaldehyde emission

    公开(公告)号:NZ607832A

    公开(公告)日:2014-06-27

    申请号:NZ60783211

    申请日:2011-08-29

    Applicant: BASF SE

    Abstract: Disclosed herein is a multilayer lignocellulose-containing molding comprising A) a middle layer or a plurality of middle layers comprising lignocellulose-containing particles which is/are obtainable by using a binder (a) and B) a covering layer or a plurality of covering layers comprising lignocellulose-containing particles which is/are obtainable by using a binder (b), the binder (a) being selected from the group consisting of (a1) formaldehyde resins and (a2) an organic isocyanate having at least two isocyanate groups; the binder (b) comprising the following components: an aqueous component (I) comprising (i) a polymer A which is composed of the following monomers: a) from 70 to 100% by weight of at least one ethylenically unsaturated mono- and/or dicarboxylic acid (monomer(s) A1) and b) from 0 to 30% by weight of at least one further ethylenically unsaturated monomer which differs from the monomers A1 (monomer(s) A2) optionally (ii) a low molecular weight crosslinking agent having at least two functional groups which are selected from the group consisting of hydroxyl, carboxyl and derivatives thereof, primary, secondary and tertiary amine, epoxy, aldehyde, an organic isocyanate having at least two isocyanate groups as component (II) and, optionally, a component (III), as an aqueous dispersion, comprising one or more polymer(s) M which is/are composed of the following monomers: a) from 0 to 50% by weight of at least one ethylenically unsaturated monomer which comprises at least one epoxide and/or at least one hydroxyalkyl group (monomer(s) M1) and b) from 50 to 100% by weight of at least one further ethylenically unsaturated monomer which differs from the monomers M1 (monomer(s) M2) and, optionally, customary additives as component (IV), and the binder (b) optionally comprises a formaldehyde scavenger.

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