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    4.
    发明专利
    未知

    公开(公告)号：BR7200834D0

    公开(公告)日：1973-07-03

    申请号：BR83472

    申请日：1972-02-11

    Applicant: BAYER AG

    Inventor： GROGLER G

    IPC: C08G18/38 ,  C08K5/21 ,  C08K5/405

    Abstract: Process for protecting against hydrolysis synthetic materials with ester groups, such as polyurethanes containing ester groups, characterized in that it comprises reacting polyisocyanates, polyhydroxy compounds containing ester groups, a protective agent against hydrolysis and, if appropriate, auxiliary agents and additives, said anti-hydrolysis agent being a compound chosen from N- (2-hydroxyalkyl) -ureas and -thioureas in amounts of 0.1 to 5.0% by weight, based on the polyurethane, this agent being mixed with one of the starting components before or during the manufacture of the polyurethane. (Machine-translation by Google Translate, not legally binding)

    6.
    发明专利
    未知

    公开(公告)号：BR7200844D0

    公开(公告)日：1973-07-03

    申请号：BR84472

    申请日：1972-02-11

    Applicant: BAYER AG

    Inventor： GROGLER G

    IPC: C08G18/38 ,  C08K5/21 ,  C08K5/405

    Abstract: Process for protecting against hydrolysis synthetic materials with ester groups, such as polyurethanes containing ester groups, characterized in that it comprises reacting polyisocyanates, polyhydroxy compounds containing ester groups, a protective agent against hydrolysis and, if appropriate, auxiliary agents and additives, said anti-hydrolysis agent being a compound chosen from N- (2-hydroxyalkyl) -ureas and -thioureas in amounts of 0.1 to 5.0% by weight, based on the polyurethane, this agent being mixed with one of the starting components before or during the manufacture of the polyurethane. (Machine-translation by Google Translate, not legally binding)

    POLYURETHANE MOULDING MATERIAL
    7.
    发明专利
    POLYURETHANE MOULDING MATERIAL 未知

    公开(公告)号：AU6883081A

    公开(公告)日：1981-10-08

    申请号：AU6883081

    申请日：1981-03-27

    Applicant: BAYER AG

    Inventor： RECKER K ,  GROGLER G

    IPC: C08G18/00 ,  C08G18/08 ,  C08G18/10 ,  C08G18/32 ,  C08J5/08 ,  C08K3/34 ,  C08K7/02 ,  C08L67/00 ,  C08L75/00 ,  C08L75/04 ,  C08L77/00 ,  C08G18/78 ,  C08K7/14

    Abstract: The instant invention is directed to a substantially solvent-free molding material, comprising (A) from 92 to 30% by weight, of an active-hydrogen containing prepolymer containing: from 0.3 to 4% by weight, based on the prepolymer, of free primary and/or secondary amino groups, from 1.5 to 10% by weight, based on the prepolymer, of urethane groups, and from 1.5 to 10% by weight, based on the prepolymer, of urea groups; (B) from 24 to 1% by weight of a polyisocyanate having a melting point above 120 DEG C.; and (C) from 5 to 69% by weight of an organic or inorganic fibrous material with a fiber length of from 0.1 to 100 mm, the equivalent ratio between NCO groups, including masked NCO groups, and active H-atoms of components (A) and (B) is between 1:1 and 1:1.75. The instant invention is also directed to a process for the production of the substantially solvent-free molding material.

    8.
    发明专利
    未知

    公开(公告)号：SE7709565L

    公开(公告)日：1978-02-28

    申请号：SE7709565

    申请日：1977-08-25

    Applicant: BAYER AG

    Inventor： SCHWINDT J ,  GROGLER G ,  UHRHAN P

    IPC: C08G18/10 ,  C08G18/00 ,  C08G18/38 ,  C08G18/65 ,  C08G18/32

    Abstract: Process for obtaining polyurethane synthetic materials, optionally cellular, characterized in that polyhydroxyl compounds of molecular weight 400 to 10,000, as well as, optionally, low molecular weight polyhydroxy compounds, are reacted with aromatic polyisocyanates and diamines as extenders of chain, if necessary in the presence of catalysts, propulsion agents and further known additives, using as diamine those of general formulas: (see formula) (Machine-translation by Google Translate, not legally binding)

    9.
    发明专利
    未知

    公开(公告)号：BR8006473A

    公开(公告)日：1981-04-14

    申请号：BR8006473

    申请日：1980-10-08

    Applicant: BAYER AG

    Inventor： REINECKE G ,  RECKER K ,  GROGLER G ,  AWATER A ,  KRAFT K

    IPC: C08J5/24 ,  B29C43/02 ,  B29C43/10 ,  B29C43/12 ,  B29C57/00 ,  B29C67/00 ,  B29C70/00 ,  C08G18/08 ,  C08G18/72 ,  C08J5/04 ,  C08K7/02 ,  C08K7/14 ,  C08G18/30 ,  C08J5/08

    Abstract: The instant invention is directed to a process for the production of fiber-reinforced molded products, comprising: (1) mixing at a temperature of from 10 DEG to 50 DEG C., (a) 7 to 35% by weight of a polyisocyanate having a melting point above 100 DEG C., and (b) 14 to 35% by weight of a polyisocyanate which is liquid at the reaction temperature of mixing, with (c) 43 to 62% by weight of one or more compounds having molecular weights of 300 to 10,000 containing 2 to 8 hydroxyl groups, and (d) 3 to 10% by weight of a chain-lengthening agent having a molecular weight of 62 to 250 containing 2 to 4 hydroxyl groups, (e) 0 to 5% by weight of a compound having a molecular weight below 1,000 containing from 2 to 4 amino groups or an equivalent quantity of water, (f) 0 to 5% by weight of a molecular sieve of the sodium aluminum silicate type, and (g) 0 to 5% by weight of one or more activators, all percentages being based on the total weight of (a) through (g) and components (b) through (e) being liquid at the chosen reaction temperature of mixing and having an average functionality of isocyanate-reactive groups of 2.5 to 3.5, the equivalent ratio of isocyanate groups in component (b) to isocyanate-reactive hydrogen atoms in components (c) through (e) being from 0.4:1 to 0.85:1 and the equivalent ratio of isocyanate groups in component (a) to isocyanate-reactive hydrogen atoms in components (c) through (e), taking into account any masked isocyanate groups being from 0.15:1 to 1.2:1, with the proviso that the average functionality of components (c) through (e) should be at least 2.65 when the first-mentioned equivalent ratio is less than or equal to 0.65:1 and not more than 3.0 when the equivalent ratio is greater than or equal to 0.70:1; (2) adding a fiber material having a fiber length of from 10 to 100 mm; and (3) after storing for from one hour to four days, curing and shaping the molding compound at a temperature above 90 DEG C. and at a pressure of from 20 to 300 bars.

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