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    1.
    发明专利
    未知

    公开(公告)号：DE3872840D1

    公开(公告)日：1992-08-20

    申请号：DE3872840

    申请日：1988-11-08

    Applicant: SIEMENS AG

    Inventor： SCHMIDT HANS-FRIEDRICH DR ,  QUELLA FERDINAND DR

    IPC: C08K3/04 ,  C08L81/02

    Abstract: Polyphenylene sulphide (PPS) is stabilised against thermal degradation and out-gassing or organic substances by addn. of active carbon powder (I) as stabiliser. Amt. of (I) added is 1-2%; a keto gp.-contg. polymer (II) or polyimide of about the same thermal stability as PPS is added, in combination with up to 5% (I); (II) is an aromatic ketone, pref. poly-1, 4-oxyphenyloxy-p, p'-benzophenone, and amt. of (II) is up to 5 wt. % (pref. up to 1 wt.%), with 2 wt.% (I); condensable, oligomeric ketones or imides capable of resonance are added either to the starting materials or during the roasting process and copolymerised into the polymer chain, before adding (I); alternatively, up to 5% of an equally stable polymer with aromatic amine gps., esp. polyvinylcarbazole, is added, together with 2% (I); 1% alkali carbonate, pref. Li2CO3, is also added.

    Open-celled plastics foam
    3.
    发明专利
    Open-celled plastics foam 未知

    公开(公告)号：DE3309855A1

    公开(公告)日：1984-09-20

    申请号：DE3309855

    申请日：1983-03-18

    Applicant: SIEMENS AG

    Inventor： QUELLA FERDINAND DR

    IPC: B01D39/16 ,  B29C67/20 ,  C08J9/10 ,  C08J9/26 ,  B29D27/00

    Abstract: A field of application of open-celled plastics foams is in the generation of non-aligned air or water flows which are as laminar as possible. The plastics foams can replace porous ceramics with the advantage that corresponding parts can be produced by injection moulding. In order to produce these open-celled plastics foams, a plastic which can be, for example, injection moulded or compression moulded, is treated with 1...5 % of a foaming additive and 10...50 % of a soluble material that is insoluble in the plastic and the soluble components are eluted by solvents after the mixture has been processed.

    4.
    发明专利
    未知

    公开(公告)号：DE3211067A1

    公开(公告)日：1983-09-29

    申请号：DE3211067

    申请日：1982-03-25

    Applicant: SIEMENS AG

    Inventor： QUELLA FERDINAND DR ,  STEINWENDER BERND

    IPC: C09J11/06 ,  C09J5/08 ,  C09J7/02 ,  C09J3/00 ,  C09J5/06 ,  C09J7/00 ,  H02G15/00 ,  E06B1/58 ,  E04G23/02

    Abstract: Foamable hot-melt adhesives comprised of a per se known hot-melt adhesive having a foaming additive therein, for example an organic azo compound. These adhesives can function in a purely physical foaming manner but can also function as crosslinking material, i.e. as solidifying and bonding materials. The foamable hot-melt adhesives of the invention can be used, for example, in sealing cable ends, for filling any desired aperture in the construction field, for sealing windows, doors, etc. or for sealing articles of manufacture.

    6.
    发明专利
    未知

    公开(公告)号：DE4028516A1

    公开(公告)日：1992-03-12

    申请号：DE4028516

    申请日：1990-09-07

    Applicant: SIEMENS AG ,  HOECHST AG

    Inventor： QUELLA FERDINAND DR ,  BEWER GUENTER DR

    IPC: C10M107/38 ,  C10M169/04 ,  H01R43/00

    Abstract: The proposal concerns fluorinated lubricants based on perfluoropolyether oils (PFPE) which, compared to prior art PFPE oils, contain an increased proportion of short-chained oligomers with fewer than 8 perfluoroalkylene components. The proposal is also for mixtures of prior art PFPE oils with low-molecular perfluorinated fluids based on hexafluoro-propylene oxide oligomers as lubricants. The lubricants have an adequately low viscosity for processing without solvents and a relatively low vapour pressure.

    METHOD OF PRODUCING VITREOUS CARBON
    8.
    发明专利
    METHOD OF PRODUCING VITREOUS CARBON 未知

    公开(公告)号：DE3362373D1

    公开(公告)日：1986-04-10

    申请号：DE3362373

    申请日：1983-03-21

    Applicant: SIEMENS AG

    Inventor： QUELLA FERDINAND DR ,  SCHMIDT HANS-FRIEDRICH DR

    IPC: C04B35/52 ,  C01B31/02 ,  C04B35/524 ,  C09C1/00 ,  C09C1/44 ,  D01F9/20 ,  D01F9/24 ,  D01F11/12

    Abstract: Glass or vitrified carbon is produced by thermal degradation of polyphenylene sulfide or a substituted compound thereof by additions of an oxide of a sulfide-forming metal, such as Fe2O3, which is added in a weight amount of at least about 1% and preferably about 10%, in order to accelerate the degradation process, and resultant admixture is heated to a temperature above about 150 DEG C. and thereafter the temperature is increased during the course of the reaction. The inventive process is useful for production of chemically resistant glass carbon fibers, glass carbon electrodes, glass carbon containers, etc.

    Method for centring optical waveguides in connecting pieces
    9.
    发明专利
    Method for centring optical waveguides in connecting pieces 未知

    公开(公告)号：DE3327109A1

    公开(公告)日：1985-02-07

    申请号：DE3327109

    申请日：1983-07-27

    Applicant: SIEMENS AG

    Inventor： QUELLA FERDINAND DR ,  OTTO PETER H DR DIPL ING

    IPC: G02B6/38 ,  G02B7/26

    Abstract: The centring of an optical waveguide is performed via the outer fibre contour by means of pin-pointed flow of the adhesive. The accommodation of the fibre in the connecting piece is served by a bore of variable shape having a constant cross-section down to the millimetre range and greater than the fibre cross-section. Straight, axial-flow channels are provided symmetrically on the circumference of the bore.

    Permanent anti-wetting coating prodn. on surface esp. of orifice plate - for ink jet printing head, by coating with silicone oil and crosslinking in plasma
    10.
    发明专利
    Permanent anti-wetting coating prodn. on surface esp. of orifice plate - for ink jet printing head, by coating with silicone oil and crosslinking in plasma 未知

    公开(公告)号：DE4019539A1

    公开(公告)日：1992-01-02

    申请号：DE4019539

    申请日：1990-06-19

    Applicant: SIEMENS AG

    Inventor： QUELLA FERDINAND DR ,  KOCH FRIEDRICH

    IPC: B05D3/14 ,  B41J2/16 ,  C09J183/04

    Abstract: Prodn. involves (a) applying a thin film of a silicone oil (I); and (b) treating the film in a plasma until the film has the required deg. of chemical crosslinking. (I) pref. contains polysiloxanes, pref. polydimethylsiloxane, esp. with hydrophilic end gps.. The film is 50 nm to 2 microns thick. (I) can be applied by gas phase deposition; by stamping; or by immersing the substrate in a (I) soln.. The film is treated in a plasma contg. O2 and opt. also an inert gas, pref. at normal pressure and temp. and with a h.f. plasma. When used for coating an orifice plate, the ink channels not to be coated are sealed before applying the (I) film. USE/ADVANTAGE - The process is claimed for coating the orifice plate of an ink jet printing head. It is permanent and can be applied easily and to surfaces of any shape and any material, in thicknesses to suit the application.

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