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    1.
    发明专利
    未知

    公开(公告)号：DE3737524C2

    公开(公告)日：1994-12-22

    申请号：DE3737524

    申请日：1987-11-05

    Applicant: BAYER AG

    Inventor： KNIPP ULRICH DR ,  GANSTER OTTO DR ,  JAKOB DIETER ,  LUCKAS BRUNO

    IPC: A63C5/12 ,  A63C5/14 ,  C08G18/40 ,  B29C67/20 ,  B29C43/02

    Abstract: Ski cores are produced by heating a thermoformable, rigid foam containing urethane and isocyanurate groups and having a density of greater than 100 kg/m , obtained by reacting polyisocyanates with a mixture of relatively high-molecular-weight polyethers and polyesters containing at least two hydroxyl groups and having a mixture OH number of greater than 400 and a characteristic number of greater than 125 in the presence of blowing agents and optionally further additives known per se, to a temperature of above 160@C and then immediately pressing the heated foam in moulds having a surface temperature of below 50@C for the final shaping.

    2.
    发明专利
    未知

    公开(公告)号：DE3766346D1

    公开(公告)日：1991-01-03

    申请号：DE3766346

    申请日：1987-10-15

    Applicant: BAYER AG

    Inventor： NEUHAUS ALFRED ,  GANSTER OTTO DR ,  LUCKAS BRUNO

    IPC: C08G18/40 ,  C08G18/48 ,  C08G18/65 ,  C08G18/66 ,  C08G18/76

    Abstract: A process for the production of polyurethane mouldings having a density in the range from 0.8 to 1.4 g/cm and a modulus of elasticity in bending, measured in accordance with DIN 53 457, of at least 1800 N/mm involves reacting di- and/or polyisocyanates from the diphenylmethane series with selected compounds containing groups which are reactive towards isocyanate groups by reaction injection moulding, where the reactants used are, inter alia, polyether-polyols which have a molecular weight of from 500 to 999 and contain at least 30 % by weight of ethylene oxide units incorporated in polyether chains, and, in addition, the type and mixing ratios of the compounds containing groups which are reactive towards isocyanate groups are selected so that the mean hydroxyl number of the mixture formed from these components is greater than 300.

    3.
    发明专利
    未知

    公开(公告)号：DE3836598A1

    公开(公告)日：1990-05-03

    申请号：DE3836598

    申请日：1988-10-27

    Applicant: BAYER AG

    Inventor： MUELLER HANNS-PETER DR ,  GANSTER OTTO DR ,  LUCKAS BRUNO

    IPC: C08G18/30 ,  C08G18/00 ,  C08G18/08 ,  C08G18/09 ,  C08G18/58 ,  C08G18/70 ,  C08G101/00

    Abstract: Reactive systems comprising a) a storage-stable mixture of (i) a polyisocyanate component and (ii) an epoxide component, the storage stability being ensured by heat treatment of the epoxide component carried out in the presence of an alkylating agent, b) an NCO-reactive component comprising at least one organic compound containing at least two groups which are reactive toward isocyanate groups, c) if desired tertiary amines, and, if desired, d) further assistants and additives, a process for the preparation of foamed or unfoamed polyurethane plastics containing isocyanurate groups by preparing a reactive system of this type by blending the individual components and heating the system, with or without simultaneous shaping, with supply of heat and/or utilisation of the heat of reaction to at least 60 DEG C.

    6.
    发明专利
    未知

    公开(公告)号：DE3720211A1

    公开(公告)日：1988-12-29

    申请号：DE3720211

    申请日：1987-06-17

    Applicant: BAYER AG

    Inventor： KNIPP ULRICH DR ,  GANSTER OTTO DR ,  RENTZ BERNHARD

    IPC: B29C44/00 ,  B29C31/10 ,  B29C44/04 ,  B29C44/08 ,  B29C44/42 ,  B29C44/58 ,  B29C45/00 ,  B29C45/16 ,  B29C45/17 ,  B29C67/24 ,  B29K105/04 ,  B29L9/00 ,  B32B5/18

    Abstract: For the production of composite articles by successively introducing a plurality of fillings of at least one reaction mixture into a mould cavity (11), use is made of a recuperator piston (12), which lies opposite the pull-back ram (6) of a mixing head (1) on the other side of the mould cavity (11) and can be placed in various positions in order first of all to introduce a first filling and, once this has hardened into a puncture-resistant, but still compressible filling (17), to press a further filling (or fillings) initially on one side and then on the other side between mould cavity wall (18) and first filling (17). … …

    7.
    发明专利
    未知

    公开(公告)号：DE2920501A1

    公开(公告)日：1980-11-27

    申请号：DE2920501

    申请日：1979-05-21

    Applicant: BAYER AG

    Inventor： GANSTER OTTO DR ,  MEINERS HANS JOACHIM DR ,  EIFLER WILLI DR ,  MEYBORG HOLGER DR ,  SCHWINDT JUERGEN DR

    IPC: C08G18/00 ,  C08G18/10 ,  C08G18/28 ,  C08G18/32 ,  C08G18/54 ,  C08G18/65

    Abstract: This invention relates to a process for the production of non-cellular polyurethane ureas elastomers using a chain-extender mixture produced from asymmetrically alkyl-substituted anilines by condensation with formaldehyde. The chain-extending agents used in the instant invention show medium reactivity to compounds containing isocyanate groups. These chain-extending agents may be processed both in high-pressure and in low-pressure metering and mixing units because they are either liquid at room temperature or can be melted at relatively low temperatures (below 55 DEG C.). The homogeneous, i.e. non-cellular, polyurethane urea elastomers obtained in the instant invention are distinguished by having excellent mechanical properties.

    PNEUMATIC TYRE
    8.
    发明专利
    PNEUMATIC TYRE 未知

    公开(公告)号：DE2860046D1

    公开(公告)日：1980-11-13

    申请号：DE2860046

    申请日：1978-06-20

    Applicant: BAYER AG

    Inventor： KNIPP ULRICH DR ,  GANSTER OTTO DR ,  SAHLER GERD

    IPC: B60C5/01 ,  B29D30/08 ,  B60C5/00 ,  B29H17/02

    Abstract: A pneumatic tire comprising an encircling tread and two side members, wherein each side member comprises a side wall having a bead ring and part of the tread backing, characterized in that said tread backing has the following features: (a) the tread backing is formed as a ring which extends to the center of the tire and is intimately joined to the side wall on the other side; (b) bands whose length is substantially equal to the width of said ring are fixed on the circumference of said ring in the center of the tread; (c) the width of said bands is approximately equal to the distance between said bands; (d) there are recesses in the part of said ring facing the tread, into which said bands of the other side fit during assembly, so that said tread backing has a substantially flush surface after assembly; and (e) there are beads on the end of said bands for clamping in the tread.

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