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    11.
    发明专利
    未知

    公开(公告)号：DE3101022A1

    公开(公告)日：1982-08-05

    申请号：DE3101022

    申请日：1981-01-15

    Applicant: HOECHST AG

    Inventor： DISSELBECK DIETER ,  STAHL DIETER

    IPC: B32B5/02 ,  B29C70/08 ,  B29C70/24 ,  B29C70/50 ,  B29D24/00 ,  B32B5/08 ,  B32B7/08 ,  B32B15/14 ,  B32B27/12 ,  D03D11/00 ,  B23B27/12

    Abstract: The dimensionally stable composite material consists of a double fabric with spacer filaments. On both sides of the double fabric there is a plastics layers. Face and back fabric of the double fabric are linked with each other by means of incorporated rigid filaments which prevent the double fabric to be squeezed. The exterior plastics layers are curable laminates. FIG. 1 shows such a composite material. The material is obtained by applying fiber mats impregnated with curable synthetic resins to both sides of the double fabric containing spacer filaments, and subsequently bonding fiber mats and double fabric by compression.

    12.
    发明专利
    未知

    公开(公告)号：FI54492B

    公开(公告)日：1978-08-31

    申请号：FI114271

    申请日：1971-04-23

    Applicant: HOECHST AG

    Inventor： LORENTZ GUIDO ,  STAHL DIETER

    IPC: C08L61/00 ,  C08L71/14 ,  C08L71/06

    Abstract: Process for reducing the amount of shrinking that occurs when a furan resin is cured which comprises adding to a furan resin from 15 to 50 percent by weight based on the total weight of the binding material, of a copolymer of (a) at least one alpha , beta -olefinically unsaturated carboxylic acid component which is at most dibasic and has not more than four carbon atoms and (b) a copolymerizable olefinically unsaturated monomer having from 2 to 18 carbon atoms in a ratio of a) to b) from 1:0.5 to 1:20, said copolymer having an average molecular weight of 400 to 3000, and moulded bodies comprising a cured furan resin containing a copolymer as defined above.

    Process for producing rigid, planar flat collectors and heat exchangers
    17.
    发明专利
    Process for producing rigid, planar flat collectors and heat exchangers 未知

    公开(公告)号：DE3118024A1

    公开(公告)日：1982-11-25

    申请号：DE3118024

    申请日：1981-05-07

    Applicant: HOECHST AG

    Inventor： STAHL DIETER ,  ECKARDT PETER DR

    IPC: F24D3/16 ,  F28F21/00 ,  F24J3/02

    Abstract: A description is given of rigid, planar flat collectors and heat exchangers which are constructed from two outer layers and a core layer lying in between on the sandwich principle, the core layer consisting of spherically shaped single-grain material of uniform height which has adequate dimensional stability. A process for producing the said heat exchangers is also described. The outer layers consist of plastic, preferably glass fibre reinforced, unsaturated polyester resin, while the particles of the core layer may, for example, take an egg-shaped or spherical form and consist of inorganic or organic material. The production of the heat exchanger according to the invention is carried out by applying the particles of the intermediate layer to the lower, as yet unhardened outer layer, the particles penetrating into the layer of resin in a punctiform manner. Subsequently, the upper outer layer is applied, a puntiform adhesion likewise taking place. The three-dimensional structure in sandwich form obtained is subsequently cured.

    20.
    发明专利
    未知

    公开(公告)号：DE2019673A1

    公开(公告)日：1971-11-11

    申请号：DE2019673

    申请日：1970-04-23

    Applicant: HOECHST AG

    Inventor： WERNER GERHARD DR ,  STAHL DIETER ,  LORENTZ GUIDO DR

    IPC: C08K3/00 ,  C08L67/06 ,  C08G39/00

    Abstract: 1349891 Unsaturated polyester compositions FARBWERKE HOECHST AG 22 April 1971 [23 April 1970] 10808/71 Heading C3P A polymerizable resin mixture comprises at least one unsaturated polyester and at least one cotelomer of maleic anhydride and a vinylaromatic compound, the or each cotelomer containing residues of maleic anhydride and of the vinyl-aromatic compound in a molar ratio of 1 : 20 to 1 : 2 and having an average molecular weight within the range of from 600 to 3000. In the examples the resin mixtures comprise unsaturated polyesters prepared from polyethylene terephthalate, maleic dibutyl ester and dimethyl propanediol or phthalic acid, maleic acid, diethylene glycol and triethylene glycol, styrene, dimethyl aniline, diethyl aniline, arenaceous sand, quartz powder, kieselweiss, titanium dioxide, a cotelomer of styrene and maleic anhydride and asbestos fibres and polymerized using benzoyl peroxide in a shrinkage beam.

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