22.
    发明专利
    未知

    公开(公告)号:BR0311166A

    公开(公告)日:2005-03-15

    申请号:BR0311166

    申请日:2003-05-21

    Applicant: BASF AG

    Abstract: The invention provides a process for preparing polyester polyols of polyhydric alcohols by mono- or polyesterification of at least one carboxylic acid having at least two acid groups and/or at least one derivative of a dicarboxylic acid with polyhydric alcohols, optionally with the addition of a catalyst, while removing the water of reaction, wherein the polyhydric alcohol used has a formaldehyde acetal content of less than 500 ppm.

    23.
    发明专利
    未知

    公开(公告)号:DE59812323D1

    公开(公告)日:2005-01-05

    申请号:DE59812323

    申请日:1998-10-09

    Applicant: BASF AG

    Abstract: Polyester alcohols (I) are prepared by condensation of: (A) carboxylic acids and/or carboxylic acid derivatives comprising (A1) aromatic and/or araliphatic carboxylic acids having at least 2 carboxyl groups and/or derivatized carboxyl groups (A2) aliphatic multifunctional carboxylic acids having at least 2 carboxyl groups and/or derivatized carboxyl groups and (A3) mono-carboxylic acids and/or mono-carboxylic acid derivatives with; (B) alcohols. Independent claims are included for: (i) a process for the production of polyisocyanate-polyaddition products (II) by reaction of isocyanates with isocyanate reactive compounds, optionally in the presence of propellants, catalysts and/or processing aids and/or additives whereby the isocyanate reactive compound contains (I); and (ii) the polyisocyanate-polyaddition product (II).

    24.
    发明专利
    未知

    公开(公告)号:AT263201T

    公开(公告)日:2004-04-15

    申请号:AT99113978

    申请日:1999-07-17

    Applicant: BASF AG

    Abstract: Polyester polyol is prepared by polycondensation of an alcohol/ester mixture with a carboxylic acid mixture and polyalkylene terephthalate. Polyester polyols (I) based on alcohols and carboxylic acids and/or carboxylic acid derivatives as well as polyalkylene terephthalate are prepared by polycondensation of a raw material mixture containing (A) a mixture of one or more alcohols having at least 2 hydroxyl groups and 10-30 wt.% of a linear and/or cyclic ester compound, (B) a mixture of 10-33 wt.% succinic acid, 39-50 wt.% glutaric acid and 16-45 wt.% adipic acid and (C) polyalkylene terephthalate whereby the wt. ratio of (A):(B):(C) is 35-60:10-25:20-55.

    27.
    发明专利
    未知

    公开(公告)号:DE19902802A1

    公开(公告)日:2000-08-03

    申请号:DE19902802

    申请日:1999-01-25

    Applicant: BASF AG

    Abstract: Polyurethane with a loss factor of 0.2-0.8 is based either on (a) a prepolymer obtained by reacting a polyisocyanate with a polyester polyol or polyether polyol with secondary hydroxyl group(s) and a molecular weight of 300-1200 or; (b) a polyol component containing other polyester polyol(s) or polyether polyol(s) with primary and secondary OH groups and a molecular weight of 300-1200. A process for the production of polyurethane (PU) with a loss factor of 0.2-0.8 involves bringing into contact (A) a component containing compound(s) which react with isocyanate and (B) a polyisocyanate component. In this system, either (1) component (B) is a prepolymer obtained by reacting a first polyester polyol or polyether polyol with at least one secondary hydroxyl group and a number-average molecular weight (MW) of 300-1200, or at least two of these, with an NCO group-containing compound, or; (2) component (A) contains other polyester polyol(s) or polyether polyol(s) with primary and secondary OH groups and MW of 300-1200. Independent claims are also included for (i) PU obtained by this process, with a loss factor of 0.2-0.8 and also with a natural frequency of 30-500 Hz and/or a dynamic elastic modulus of 1-50 N/cm ; (ii) a method for obtaining PU with a loss factor in the above range or also with at least one of the other properties in (i), by incorporating polyester polyol(s) or polyether polyol(s) with MW in the above ranges into the PU; (iii) formed articles containing PU as in (i).

    28.
    发明专利
    未知

    公开(公告)号:DE19832885A1

    公开(公告)日:2000-01-27

    申请号:DE19832885

    申请日:1998-07-22

    Applicant: BASF AG

    Abstract: Polyester polyol is prepared by polycondensation of an alcohol/ester mixture with a carboxylic acid mixture and polyalkylene terephthalate. Polyester polyols (I) based on alcohols and carboxylic acids and/or carboxylic acid derivatives as well as polyalkylene terephthalate are prepared by polycondensation of a raw material mixture containing (A) a mixture of one or more alcohols having at least 2 hydroxyl groups and 10-30 wt.% of a linear and/or cyclic ester compound, (B) a mixture of 10-33 wt.% succinic acid, 39-50 wt.% glutaric acid and 16-45 wt.% adipic acid and (C) polyalkylene terephthalate whereby the wt. ratio of (A):(B):(C) is 35-60:10-25:20-55.

    30.
    发明专利
    未知

    公开(公告)号:DE19630283A1

    公开(公告)日:1998-01-29

    申请号:DE19630283

    申请日:1996-07-26

    Applicant: BASF AG

    Abstract: Production of rigid polyurethane (PUR) foam involves reacting (a) organic and/or modified organic di- and/or polyisocyanates with (b) special polyester-polyols (IA) and/or polyether-ester-polyols (IB) and optionally (c) chain extender and/or cross-linking agent in the presence of (d) blowing agent, (e) catalyst and optionally (f) other ancillaries and/or additives. (IA) and (IB) can be prepared by polycondensation of dicarboxylic acids with polyols using polyalkylene terephthalate (II) and, if necessary, reaction with lower alkylene oxide and optionally other higher molecular compounds with NOTLESS 2 reactive hydrogen atoms. The novelty is that the preparation of (IA) and/or (IB) is carried out by polycondensation in stages, with addition of (1) (II) to the starting materials at the beginning and/or during the first stage and (2) catalyst during other stage(s).

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