61.
    发明专利
    未知

    公开(公告)号:DE50108088D1

    公开(公告)日:2005-12-22

    申请号:DE50108088

    申请日:2001-05-10

    Applicant: BASF AG

    Abstract: The invention relates to high-functionality polyether polyols of the general formula where each R' 1 is an unsubstituted or substituted aliphatic or aromatic radical and each R' 2 is an unsubstituted or substituted aliphatic or aromatic radical, H, OH, polyalkyl ether chain or halogen, each X is a polyalkyl ether chain or H, where at least one X is a polyalkyl ether chain, and m is an integer from 0 to 20, where Xm is H when m is 0, and n is an integer from 4 to 12, to processes for preparing such high-functionality polyether polyols and also to the use thereof for preparing polyurethanes and nonionic surfactants.

    New substituted bis(tetrakis(hydroxymethyl)phosphonium) salts are useful for the production of flame retardant polyurethane foams

    公开(公告)号:DE10304344A1

    公开(公告)日:2004-08-12

    申请号:DE10304344

    申请日:2003-02-03

    Applicant: BASF AG

    Abstract: Substituted bis[tetrakis(hydroxymethyl)phosphonium] salts are new. Substituted bis[tetrakis(hydroxymethyl)phosphonium] salts (I) of formula (1) are new. [Image] A : -CH2 or CH2-CH-E; E : 1-8(1-4)C alkylene; R : an organic group which in polyurethane comprises the corresponding isocyanate or its reaction products or in a prepolymer is the group of the added isocyanate; w, x, y, z : 1-20. Independent claims are included for: (1) a process for the production of salts (I) by reaction of tetrakis(hydroxymethyl)phosphonium salts of formula (10) with alkylene oxides; (2) polyurethanes, preferably rigid polyurethane foams having at least one structure of formula (2) - (9) in its matrix; (3) an isocyanate or hydroxyl group containing prepolymer containing at least one structure of formula (2) - (9) and; (4) a process for the production of flame retardant polyurethanes by reaction of polyisocyanates with isocyanate-reactive compounds having at least 2 reactive hydrogen atoms in the presence of a compound of formula (1) or (10). [Image] [Image] D : -CH2 or -CH2-CH-E; B : anion; a : whole number ensuring electroneutrality.

    66.
    发明专利
    未知

    公开(公告)号:ES2175980T3

    公开(公告)日:2002-11-16

    申请号:ES99923570

    申请日:1999-05-10

    Applicant: BASF AG

    Abstract: Prepolymers which contain isocyanate groups, have an NCO content of at least 30.0% by weight and can be prepared by reacting an isocyanate mixture consisting predominantly of diphenylmethane diisocyanates and polyphenylpolymethylene polyisocyanates and having a proportion of two-ring isomers of not more than 74% by weight with at least 4-functional polyols or a mixture of polyols having a mean functionality of at least 4, where the polyols or polyol mixtures have a hydroxyl number of from 200 to 1650 mg KOH/g and a number average molecular weight of less than 1100 g/mol. The present invention also provides a process for preparing these prepolymers containing isocyanate groups, provides for their use for producing polyurethanes and provides a process for producing polyurethanes by reacting at least one novel prepolymer containing isocyanate groups, if desired in admixture with further organic and/or modified organic isocyanates (a), with compounds having at least two reactive hydrogen atoms (b) in the presence of, if desired, blowing agents (c), catalysts (d) and, if desired, further auxiliaries and/or additives (e).

    69.
    发明专利
    未知

    公开(公告)号:DE59800060D1

    公开(公告)日:2000-01-13

    申请号:DE59800060

    申请日:1998-06-10

    Applicant: BASF AG

    Abstract: In the production of rigid polyurethane (PUR) foam with low thermal conductivity by reacting (a) organic and/or modified organic polyisocyanates with (b) compounds containing NOTLESS 2 reactive hydrogen atoms in the presence of (c) blowing agent, (d) catalyst and optionally (e) ancillaries and/or additives, the novelty is that graphite is added to (a) and/or (b). Also claimed is rigid PUR foam produced in this way.

    Foamed polyurethanes containing saccharide useful for production of shaped parts

    公开(公告)号:DE19824134A1

    公开(公告)日:1999-12-02

    申请号:DE19824134

    申请日:1998-05-29

    Applicant: BASF AG

    Abstract: Reaction of acidified saccharide with an alkaline reagent and an alkylene oxide results in surface etherification or partial alkoxylation of the saccharide, whereby cleavage and side reactions are avoided. Combination of the alkoxylation product with sugar-based polyetherpolyol gives foamed polyurethane of increased heat resistance and profile stability on storage and decreased shrinkage. Compact or cellular oligo- and/or polysaccharide containing polyurethane is prepared by reaction of (a) high molecular compounds having at least two reactive H with (b) organic and/or inorganic modified organic di- and/or polyisocyanates; (c) a chain lengthening- and/or crosslinking agent; (d) a propellant; (e) catalysts; and (f) adjuvants. The high molecular compound (a) comprises (wt.%): (a1) saccharide containing compounds (1-100) and (a2) at least one polyol (0-99), relative to the total weight of (a). The saccharide containing compound (a1) comprises (wt.%): (a11) an alkoxylation component (1-99) and (a12) a polyoxyalkylenepolyol (1-99) of an oligo- and/or polysaccharide, relative to the total weight of alkoxylation component (a11), defined and prepared as below. Independent claims are included for: (1) An oligo- and/or polysaccharide alkoxylation component obtained by reaction of (wt.%): (a111) at least one oligo- and/or polysaccharide product (5-70) of pH 3.5-6 with (a112) an alkylene oxide (20-94.9), (a113) an alkali (0.1-10), relative to the total weight of alkoxylation component; (2) an oligo- and/or polysaccharide containing polyurethane prepared as above; a (3) shaped polyurethane parts obtained as above;

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