中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

23 records (took 0.02 seconds)

    PRODUCTION OF RIGID POLYURETHANE FOAM HAVING REDUCED THERMAL CONDUCTIVITY AND ITS USE
    1.
    发明专利
    PRODUCTION OF RIGID POLYURETHANE FOAM HAVING REDUCED THERMAL CONDUCTIVITY AND ITS USE 失效

    公开(公告)号：JPH11343326A

    公开(公告)日：1999-12-14

    申请号：JP11250799

    申请日：1999-04-20

    Applicant: BASF AG

    Inventor： ROTERMUND UDO DR ,  KNORR GOTTFRIED DR ,  HAYAMA YOSHIHIKO ,  HOLLE JOACHIM ,  SEIFERT HOLGER DR

    IPC: C08G18/18 ,  C08G18/40 ,  C08G18/48 ,  C08G18/50 ,  C08J9/14 ,  C08L75/04 ,  F25D23/08

    Abstract: PROBLEM TO BE SOLVED: To obtain the subject foam having a reduced thermal conductivity by reacting a (modified) organic polyisocyanate with a polyhydroxyl compound, an H-functional low-molecular-weight chain extender or crosslinking agent, a blowing agent, and a catalyst in the presence of additives. SOLUTION: A rigid foam having a thermal conductivity of 0.018 W/mK or below is obtained by reacting (A) a (modified) organic polyisocyanate with (B) a polyhydroxyl compound having at least two reactive hydrogen atoms, a functionality of 2-8, and a molecular weight of 400-6,000 and represented by the formula, (e.g. a polyether polyol), 0-20 wt.%, based on component B, H-functional low-molecular-weight chain extender or crosslinking agent such as ethanolamine, a blowing agent such as cyclopentane, 0.001-5 wt.%, based on component B, catalyst such as tin laurate in the presence of additives such as a filler. In the formula, R is hydrogen, methyl, ethyl, or a 3-6C alkyl; R' is hydrogen, methyl, benzyl, or the like; (n) is 0-4; (m) is 1-3; (o) is 1-3; and X is an n-alkyl, an aralkyl, or the like.

    PRODUCTION OF LOW-DENSITY RIGID POLYURETHANE FOAM AND USE OF RIGID POLYURETHANE FOAM PRODUCED THEREBY
    2.
    发明专利
    PRODUCTION OF LOW-DENSITY RIGID POLYURETHANE FOAM AND USE OF RIGID POLYURETHANE FOAM PRODUCED THEREBY 失效

    公开(公告)号：JPH10273549A

    公开(公告)日：1998-10-13

    申请号：JP5995098

    申请日：1998-03-11

    Applicant: BASF AG

    Inventor： KNORR GOTTFRIED DR ,  ROTERMUND UDO DR ,  BAUM EVA ,  SEIFERT HOLGER DR ,  WIEGMANN WERNER

    IPC: C08J9/08 ,  C08G18/48 ,  C08G18/50 ,  C08G18/66 ,  C08J9/14

    Abstract: PROBLEM TO BE SOLVED: To provide a process for producing a low-density rigid polyurethane foam excellent in compression strength and long-term dimensional stability and a method for using a low-density rigid polyurethane foam produced thereby. SOLUTION: In this process, a (modified) org. polyisocyantate (a) is reacted with a high-molecular compd. (b) having at least two reactive hydrogen atoms and if necessary a low-molecular chain extended and/or a cross-linker (c) in the presence of a blowing agent (d), a catalyst (e), and if necessary other auxiliaries and/or additives (f). Here, the blowing agent (d) comprises 0.1-10 wt.% cyclopentane, 0.1-6 wt.% compd. homogeneously miscible with cyclopentane and selected from among 3-4C alkanes and 3-4C alkenes, and carbon dioxide generated by the reaction of water with the isocyanate (a); and a polyether having arom. parts and nitrogen atoms is used in an amt. of 5-25 wt.% as the high mol.wt. compd. (b).

    PRODUCTION OF POLYURETHANE MANIFESTING IMPROVED HARDENING PROPERTY
    3.
    发明专利
    PRODUCTION OF POLYURETHANE MANIFESTING IMPROVED HARDENING PROPERTY 失效

    公开(公告)号：JPH10130358A

    公开(公告)日：1998-05-19

    申请号：JP20312897

    申请日：1997-07-29

    Applicant: BASF AG

    Inventor： GUETTES BERND ,  DINSCH STEFAN ,  KNORR GOTTFRIED DR ,  SEIFERT HOLGER DR

    IPC: C08J9/12 ,  C08G18/50 ,  C08G18/65 ,  C08G101/00

    Abstract: PROBLEM TO BE SOLVED: To provide a method for producing the subject polyurethane capable of evading the problem of a free amine and having a low viscosity, a sufficient molecular weight distribution and a chain length distribution by using a polyetherpolyol obtained by combining a specific aromatic amine. SOLUTION: (A) An organic or a modified organic diisocyanate and/or polyisocyanate is reacted with (B) a polyetherpolyol base on an aromatic amine obtained by reacting a mixture of the total 100wt.% diphenylmethane-based amines comprising 5-20wt.% tetracyclic amine, 15-30wt.% tricyclic amine, 20-35wt.% polycyclic amine having four or more rings and 25-50wt.% bicyclic amine with other aromatic amines in combination in the presence of (C) a foaming agent and (D) a catalyst in the method for producing the objective polyurethane. The other aromatic amines are preferably aniline, tolylenediamine, etc. Further, the other aromatic amines are preferably used in 0.1-10wt.% based on the weight of the diphenylmethane-based amine mixture.

    5.
    发明专利
    未知

    公开(公告)号：DE59912877D1

    公开(公告)日：2006-01-12

    申请号：DE59912877

    申请日：1999-04-12

    Applicant: BASF AG

    Inventor： ROTERMUND UDO DR ,  KNORR GOTTFRIED DR ,  HAYAMA YOSHIHIKO ,  HOLLE JOACHIM ,  SEIFERT HOLGER DR

    IPC: C08G18/18 ,  C08G18/40 ,  C08G18/48 ,  C08G18/50 ,  C08G18/66 ,  C08J9/14 ,  C08L75/04 ,  F25D23/08

    Abstract: In the production of rigid polyurethane foam by reacting (a) (modified) organic polyisocyanates with (b) compound(s) of mol. wt. over 400 containing NOTLESS 2 reactive H atoms and optionally (c) H-functional low-molecular chain extenders and/or crosslinking agents of mol. wt. less than 400 in the presence of (d) blowing agents, (e) catalysts and optionally (f) additives, component (b) contains (cyclo)alkyl-, aralkyl-, benzyl- and/or aryl-(alkoxy)alkanol(s) (I). In the production of rigid polyurethane (PUR) foam with low thermal conductivity by reacting: (a) organic and/or modified organic polyisocyanates with (b) compound(s) containing NOTLESS 2 reactive hydrogen (H) atoms and having a molecular weight of over 400 g/mole and optionally (c) H-functional low-molecular chain extenders and/or crosslinking agents of molecular weight less than 400 g/mole in the presence of (d) blowing agents, (e) catalysts and optionally (f) additives component (b) contains (cyclo)alkyl-, aralkyl-, benzyl- and/or aryl-(alkoxy)alkanol(s) of formula (I). R, R' = (m)ethyl, 3-6 carbon (C) alkyl or hydrogen (H); R' may also = benzyl; n = 0-4; m, o = 1-3; X = n-, iso-, neo- or cycloalkyl, aralkyl, benzyl or aryl; and m + o = 4. An Independent claim is also included for the use of compounds (I) in the production of rigid PUR foam with reduced thermal conductivity.

    6.
    发明专利
    未知

    公开(公告)号：AT276307T

    公开(公告)日：2004-10-15

    申请号：AT98103629

    申请日：1998-03-02

    Applicant: BASF AG

    Inventor： KNORR GOTTFRIED DR ,  ROTERMUND UDO DR ,  BAUM EVA ,  SEIFERT HOLGER DR ,  WIEGMANN WERNER

    IPC: C08J9/08 ,  C08G18/48 ,  C08G18/50 ,  C08G18/66 ,  C08J9/14 ,  C08G101/00 ,  C08L75/12

    Abstract: The production of rigid polyurethane (PUR) foam with a low bulk density (I) comprises reacting (a) polyisocyanates and/or modified polyisocyanates with (b) high-mol. wt. compound(s) with at least two reactive hydrogens and optionally (c) low-mol. wt. chain-extenders and/or crosslinkers in presence of (d) blowing agents, (e) catalysts and optionally (f) other additives etc. Component (d) consists of a mixture of (d-1) cyclopentane, (d-2) at least one 3-4C alkane and/or alkene which forms a homogeneous mixture with cyclopentane and (d-3) the carbon dioxide from the reaction of water and isocyanate. Component (b) comprises aromatic nitrogen-containing polyethers.

    7.
    发明专利
    未知

    公开(公告)号：AT161859T

    公开(公告)日：1998-01-15

    申请号：AT92117083

    申请日：1992-10-07

    Applicant: BASF AG

    Inventor： HORN PETER DR ,  HINZ WERNER DR ,  KNOBLAUCH GEORG ,  RAMSTEINER FALKO DR ,  KNORR GOTTFRIED DR

    IPC: A61L29/00 ,  A61F2/00 ,  A61L27/34 ,  A61M5/00 ,  B01D63/02 ,  C08G18/02 ,  C08G18/10 ,  C08G18/12 ,  C08G18/48 ,  C08G18/50 ,  C08G18/66 ,  C08G18/76

    Abstract: The invention relates to transparent, autoclavable, non-cytotoxic, essentially compact polyurethane embedding compositions which are prepared by reacting a) modified diphenylmethane diisocyanates with b) compounds with at least two reactive hydrogens, which contain or are composed of b1) at least one polyether-polyol with an average functionality of from 3 to 8, a hydroxyl number of from 200 to 1000 and an alkali metal ion content of from 150 to 1200 ppm or, preferably, a mixture of (b1) and castor oil and/or at least one polyetherpolyol (b2) with a functionality of from 2 to 3, a hydroxyl number of from 90 to 200 and an alkali metal ion content of less than 10 ppm in the presence or absence of c) catalysts and to a process for preparing the polyurethane embedding compositions and to the use thereof for articles used in medicine.

    PROCEDIMIENTO PARA LA OBTENCION DE PLASTICOS CELULARES RIGIDOS DE POLIURETANO CON UNA DENSIDAD BRUTA REDUCIDA.
    8.
    发明专利
    PROCEDIMIENTO PARA LA OBTENCION DE PLASTICOS CELULARES RIGIDOS DE POLIURETANO CON UNA DENSIDAD BRUTA REDUCIDA. 未知

    公开(公告)号：ES2227734T3

    公开(公告)日：2005-04-01

    申请号：ES98103629

    申请日：1998-03-02

    Applicant: BASF AG

    Inventor： KNORR GOTTFRIED DR ,  ROTERMUND UDO DR ,  BAUM EVA ,  SEIFERT HOLGER DR ,  WIEGMANN WERNER

    IPC: C08J9/08 ,  C08G18/48 ,  C08G18/50 ,  C08G18/66 ,  C08J9/14

    Abstract: ES OBJETO DE LA PRESENTE INVENCION UN PROCEDIMIENTO PARA LA PRODUCCION DE ESPUMAS RIGIDAS DE POLIURETANO CON MENOR DENSIDAD APARENTE MEDIANTE LA REACCION DE A) POLIISOCIANATOS ORGANICOS Y/O MODIFICADOS CON B) AL MENOS UN COMPUESTO DE ELEVADO PESO MOLECULAR CON AL MENOS DOS ATOMOS DE HIDROGENO REACTIVOS Y OPCIONALMENTE, C) ALARGADORES DE CADENA DE BAJO PESO MOLECULAR Y/O RETICULANTES EN PRESENCIA DE D) POROGENOS, E) CATALIZADORES, ASI COMO OPCIONALMENTE F)) OTROS COADYUVANTES Y/O ADITIVOS, QUE SE CARACTERIZA PORQUE COMO POROGENO SE UTILIZA D) UNA MEZCLA DE CICLOPENTANO, AL MENOS UN COMPUESTO QUE SE PUEDA MEZCLAR DE FORMA HOMOGENEA CON CICLOPENTANO DEL GRUPO DE LOS ALCANOS Y/O ALQUENOS CON 3 O 4 ATOMOS DE CARBONO EN LA MOLECULA Y EL DIOXIDO DE CARBONO ORIGINADO A PARTIR DEL AGUA Y DEL ISOCIANATO Y COMO COMPUESTO DE ELEVADO PESO MOLECULAR POLIETERES AROMATICOS Y CON NITROGENO CON AL MENOS DOS ATOMOS DE HIDROGENO REACTIVOS (B). ASIMISMO ES OBJETO DE LA INVENCION EL USO DE LAS ESPUMAS RIGIDAS ASI PRODUCIDAS COMO MATERIAL AISLANTE.

    9.
    发明专利
    未知

    公开(公告)号：DE59209107D1

    公开(公告)日：1998-02-12

    申请号：DE59209107

    申请日：1992-10-07

    Applicant: BASF AG

    Inventor： HORN PETER DR ,  HINZ WERNER DR ,  KNOBLAUCH GEORG ,  RAMSTEINER FALKO DR ,  KNORR GOTTFRIED DR

    IPC: A61L29/00 ,  A61F2/00 ,  A61L27/34 ,  A61M5/00 ,  B01D63/02 ,  C08G18/02 ,  C08G18/10 ,  C08G18/12 ,  C08G18/48 ,  C08G18/50 ,  C08G18/66 ,  C08G18/76

    Abstract: The invention relates to transparent, autoclavable, non-cytotoxic, essentially compact polyurethane embedding compositions which are prepared by reacting a) modified diphenylmethane diisocyanates with b) compounds with at least two reactive hydrogens, which contain or are composed of b1) at least one polyether-polyol with an average functionality of from 3 to 8, a hydroxyl number of from 200 to 1000 and an alkali metal ion content of from 150 to 1200 ppm or, preferably, a mixture of (b1) and castor oil and/or at least one polyetherpolyol (b2) with a functionality of from 2 to 3, a hydroxyl number of from 90 to 200 and an alkali metal ion content of less than 10 ppm in the presence or absence of c) catalysts and to a process for preparing the polyurethane embedding compositions and to the use thereof for articles used in medicine.

Patent Agency Ranking