PROCESS FOR PRODUCING EXPANDABLE THERMOPLASTIC BEADS WITH IMPROVED EXPANDABILITY

    公开(公告)号:CA2817678A1

    公开(公告)日:2012-05-18

    申请号:CA2817678

    申请日:2011-11-07

    Applicant: BASF SE

    Abstract: A process for producing expandable, thermoplastic polymer beads comprising cavities via extrusion of a polymer melt comprising blowing agent through a die plate and pelletization in a chamber comprising liquid under a pressure in the range from 1.5 to 15 bar, wherein the polymer melt comprising blowing agent comprises from 0.1 to 5% by weight of a nucleating agent D), from 1 to 10% by weight of a blowing agent E) which in essence remains within the polymer beads, from 0.01 to 5% by weight of a co-blowing agent F) forming the cavities, based in each case on the polymer melt comprising blowing agent, and also the expandable thermoplastic polymer bead material which can be obtained by the process, comprising cavities with an average diameter in the range from 0.1 to 50 µm.

    53.
    发明专利
    未知

    公开(公告)号:AT555153T

    公开(公告)日:2012-05-15

    申请号:AT09709993

    申请日:2009-02-05

    Applicant: BASF SE

    Abstract: The present invention relates to coated polyoxymethylene moldings, comprising at least one polyoxymethylene homo- or copolymer A), and also, if appropriate, further additives B), which has been coated on the surface with at least one binder C) and one formaldehyde scavenger D), wherein the binder C) used comprises a polyalkylene oxide C1 or a polyvinyl ester C2 or a graft polymer C3 composed of C1 and C2 or a mixture of these, and the formaldehyde scavenger D) used comprises at least one lysine compound.

    56.
    发明专利
    未知

    公开(公告)号:DE502006002275D1

    公开(公告)日:2009-01-15

    申请号:DE502006002275

    申请日:2006-07-13

    Applicant: BASF SE

    Abstract: Process for preparing polyoxymethylene copolymers (POMs) by a) polymerizing a reaction mixture comprising suitable main monomers and comonomers and also a polymerization initiator and, if appropriate, a regulator, b) adding a deactivator and c) removing the residual monomers, wherein the amount of compounds whose melting point at 1013 hPa is below 60° C. present in the reaction mixture at any point in time during the process is not more than 0.1% by weight, with the POM, the monomers, comonomers, polymerization initiators, deactivators and regulators not being included in the calculation.

    Materiales lignocelulósicos marcados con partículas poliméricas que contienen un colorante fluorescente

    公开(公告)号:ES2665778T3

    公开(公告)日:2018-04-27

    申请号:ES15711167

    申请日:2015-03-20

    Applicant: BASF SE

    Abstract: Materiales lignocelulósicos que contienen A) 30 a 98,9997 % en peso de sustancias que contienen lignocelulosa (componente A), B) 1 a 50 % en peso de un aglutinante seleccionado del grupo que se compone de resinas de aminoplasto, resina de fenolformaldehído, isocianato orgánico que tiene al menos dos grupos isocianato, o sus mezclas, opcionalmente con un agente de curado (componente B), C) 0 a 25 % en peso de partículas plásticas expandidas con la densidad aparente en el intervalo de 10 a 150 kg/m3 (componente C) y D) 0 a 50 % en peso de celulosa de microfibras (componente D), E) 0 a 10 % en peso de papel decorativo (componente E), F) 0 a 10 % en peso de barniz decorativo (componente F), G) 0 a 50 % en peso de aditivos (componente G), H) 0,0003 a 3 % en peso de un agente de marcación (componente H), caracterizados porque el agente de marcación (componente H) a) es un colorante individual o una mezcla de 2 a 12 colorantes diferentes seleccionados del grupo de cumarina, perileno, terrileno, quaterrileno, naftalimida, cianina, xanteno, oxazina, antraceno, naftaceno, antraquinona o tiazina y b) son partículas del polímero con una distribución de tamaños de partícula en el intervalo de 0,05 a 50 mm en las cuales se incrusta un colorante fluorescente y la proporción de peso de la dispersión acuosa (componente H) a la sustancia que contiene lignocelulosa (componente A) es de 0,001:1 a 0,2:1.

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