Procedimiento para la preparación de espumas rígidas de poliuretano y espumas rígidas de poliisocianurato

    公开(公告)号:ES2673860T3

    公开(公告)日:2018-06-26

    申请号:ES15702428

    申请日:2015-01-27

    Applicant: BASF SE

    Abstract: Poliol de poliéster (P1), que puede obtenerse o se obtiene mediante esterificación de los componentes (i) a (v) (i) 10 a 70 % molar de al menos un compuesto del grupo que se compone de ácido tereftálico (TPA), tereftalato de dimetilo (DMT), tereftalato de polietileno (PET), anhídrido de ácido ftálico (PSA), ácido ftálico y ácido isoftálico, (ii) 0,1 a 30 % molar de uno o varios ácidos grasos y/o derivados de ácido graso, (iii) 10 a 70 % molar de uno o de varios dioles alifáticos o cicloalifáticos con 2 a 18 átomos de C o alcoxilatos de los mismos, (iv) 5 a 70 % molar de un poliol de poliéter, preparado mediante la alcoxilación de una molécula aromática iniciadora con una funcionalidad superior o igual a 2, (v) 0 a 70 % molar de un poliol o un poliol distinto del componente (iv), en cada caso respecto de la cantidad total de los componentes (i) a (v), en cuyo caso las cantidades de los componentes empleados (i) a (v) suman 100 % molar.

    POLYESTER POLYOLS BASED ON TEREPHTHALIC ACID

    公开(公告)号:CA2739845C

    公开(公告)日:2016-08-16

    申请号:CA2739845

    申请日:2009-10-13

    Applicant: BASF SE

    Abstract: Polyester polyol containing the esterification product of a) 10 to 70 mol-% of a dicarboxylic acid composition containing a1) from 50 to 100 mol-% of a terephthalic acid-based material selected from terephthalic acid, dimethyl terephthalate and polyalkylene terephthalate and mixtures thereof, a2) 0 to 50 mol-% of phthalic acid, phthalic acid anhydride or isophthalic acid, a3) 0 to 50 mol-% of one or more dicarboxylic acids, b) 2 to 30 mol-% of one or more fatty acids and/or fatty acid derivatives and/ or benzoic acid, c) 10 to 70 mol-% of one or more aliphatic or cycloaliphatic diols with 2 to 18 C atoms or alkoxylates thereof, d) 2 to 50 mol-% of a highly functional polyol selected from the group consisting of glycerin, alkoxylated glycerin, trimethylol propane, alkoxylated trimethylol propane, pentaerythritol and alkoxylated pentaerythritol, wherein at least 200 mmol, preferably at least 500 mmol and especially preferred at least 800 mmol of polyols d) with an OH functionality of >= 2.9 are converted per kg of polyester polyol.

    Method for producing rigid polyurethane foams

    公开(公告)号:AU2012366814B2

    公开(公告)日:2016-03-10

    申请号:AU2012366814

    申请日:2012-12-13

    Applicant: BASF SE

    Inventor: KAMPF GUNNAR

    Abstract: The invention relates to a method for producing rigid polyurethane foams or rigid polyisocyanurate foams using certain polyether ester polyols (B) based on aromatic dicarboxylic acids, optionally additional polyester polyols (C) different from the polyols of component (B), and polyether polyols (D), wherein the mass ratio of the sum of components (B) and, if applicable, (C) to component (D) is less than 1.6. The invention also relates to the rigid foams that can thus be obtained and to the use thereof for producing sandwich elements having rigid or flexible cover layers. The invention further relates to the basic polyol components.

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