中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

98 records (took 0.035 seconds)

    PROCESS FOR THE PREPARATION OF HIGH-TEMPERATURE- RESISTANT DENSE OR CELLULAR POLYURETHANE ELASTOMERS
    13.
    发明专利
    PROCESS FOR THE PREPARATION OF HIGH-TEMPERATURE- RESISTANT DENSE OR CELLULAR POLYURETHANE ELASTOMERS 未知

    公开(公告)号：CA1266945A

    公开(公告)日：1990-03-20

    申请号：CA514041

    申请日：1986-07-17

    Applicant: BASF AG

    Inventor： STRAEHLE WOLFGANG ,  MARX MATTHIAS ,  SCHUETT UWE

    IPC: C08G18/38 ,  C08G18/40 ,  C08G18/64

    Abstract: PROCESS FOR THE PREPARATION OF HIGH-TEMPERATURE-RESISTANT DENSE OR CELLULAR POLYURETHANE ELASTOMERS The invention relates to a process for preparing high temperature-resistant dense or cellular polyurethane elastomers by reacting the following, preferably using lowpressure processing techniques: a) organic polyisocyanates, preferably in the form of isocyanate group-containing prepolymers and/or modified urethane group-containing organic polyisocyanates, with b) relatively high molecular weight compounds having at least 2 reactive hydrogen atoms, c) urea derivatives and, optionally, d) chain extenders and/or cross-linking agents in the presence of e) catalysts and, optionally, f) blowing agents g) auxiliaries and/or additives wherein amino and/or hydroxyl group-substituted ureas and/or polyureas having molecular weights from 200 to 4000 are also used as the urea derivatives. Said ureas and/or polyureas are prepared by reacting organic dilsocyanates with primary aliphatic and/or cycloaliphatic diamines and/or alkanolamines in molar ratios of from 1:1.1 to 1:2, preferably in the presence of polyester or polyether polyols as solvents or diluting agents.

    PROCESS FOR THE PREPARATION OF POLYURETHANE-POLYUREA MOLDED PARTS AND ALKYL-SUBSTITUTED PHENYLENEDIAMINES USED THEREFOR
    14.
    发明专利
    PROCESS FOR THE PREPARATION OF POLYURETHANE-POLYUREA MOLDED PARTS AND ALKYL-SUBSTITUTED PHENYLENEDIAMINES USED THEREFOR 未知

    公开(公告)号：CA1218190A

    公开(公告)日：1987-02-17

    申请号：CA406502

    申请日：1982-07-02

    Applicant: BASF AG

    Inventor： NISSEN DIETMAR ,  NEUMANN PETER ,  MARX MATTHIAS ,  EILINGSFELD HEINZ

    IPC: C08G18/32 ,  C08G18/65 ,  C08G18/38 ,  B29C45/00 ,  C08G18/64

    Abstract: The subject invention relates to a process for preparing polyurethane-polyurea parts and alkyl-substituted phenylenediamines used therefor. The non-cellular molded parts are particularly suited for use in the automobile industry, for example, as bumper coating, body parts such as fenders, spoilers, and wheel well expansions. They may also be used for preparing shoe soles and rollers. The cellular foams may be used as arm supports, seats, and cover layers in composite foams. The alkyl substituted phenylenediamine have a structural formula selected from the group consisting of -IMAGE- -IMAGE- -IMAGE- (I) (II) (III) and mixtures thereof in which R1 and R2 are the same or different and represent an alkyl radical with 1 to 4 carbon atoms, which are arranged linearly or branched, and in which R3 denotes an alkyl radical having 4 to 12 carbon atoms or a 5 or 6 member cycloalkyl radical.

    STORAGE-STABLE TRIS (HYDROXYALKYL) ISOCYANURATE POLYOL DISPERSIONS, PROCESS FOR THEIR PREPARATION AND THEIR UTILIZATION
    16.
    发明专利
    STORAGE-STABLE TRIS (HYDROXYALKYL) ISOCYANURATE POLYOL DISPERSIONS, PROCESS FOR THEIR PREPARATION AND THEIR UTILIZATION 未知

    公开(公告)号：CA1203342A

    公开(公告)日：1986-04-15

    申请号：CA459956

    申请日：1984-07-30

    Applicant: BASF AG

    Inventor： MARX MATTHIAS ,  GANSS HELMUT ,  FRANK WOLFRAM

    IPC: C08G18/38 ,  C08G18/65 ,  C08G18/66 ,  C08J3/22

    Abstract: STORAGE-STABLE TRIS(HYDROXYALKYL)ISOCYANURATE POLYOL DISPERSIONS, PROCESS FOR THEIR PREPARATION AND THEIR UTILIZATION The invention relates to storage-stable tris (hydroxyalkyl)isocyanurate polyol dispersions containing (a) from 2 to 70 parts by weight tris(hydroxyalkyl)isocyanurate, (b) from 98 to 30 parts by weight of at least one polyol having a functionality of from 2 to 8 and a hydroxyl number from 20 to 1800, and (c) from 0 to 20 parts by weight of one or more dispersion stabilizers. The dispersions are prepared by dissolving starting components A and B at temperatures in excess of 100.degree.C, in some cases adding a dispersion stabilizer and/or crystallization accelerator, with continuous and step-wise cooling of the mixture while stirring. The products are utilized for the preparation of polyurethane plastics, in particular polyisocyanurate foams containing polyurethane or polyurethane groups.

    PROCESS FOR THE MANUFACTURE OF STABLE POLYOL-FILLER DISPERSIONS
    17.
    发明专利
    PROCESS FOR THE MANUFACTURE OF STABLE POLYOL-FILLER DISPERSIONS 未知

    公开(公告)号：CA1166403A

    公开(公告)日：1984-05-01

    申请号：CA340417

    申请日：1979-11-22

    Applicant: BASF AG

    Inventor： MARX MATTHIAS ,  NISSEN DIETMAR

    IPC: C08L71/00

    Abstract: This invention relates to a process for the manufacture of stable, non-sedimenting polyol-filler dispersions. The polyol-filler dispersions are prepared by the crushing of fillers in situ in polyols employing high localized energies. The products thus obtained are preferably used for the manufacture of polyurethanes and, in particular, polyurethane foams.

Patent Agency Ranking