公开(公告)号：DE4133124A1

公开(公告)日：1993-04-08

申请号：DE4133124

申请日：1991-10-05

Applicant: BASF AG

Inventor： PLACHETTA CHRISTOPH DR ,  SCHLICHTING KARL DR ,  WELZ MARTIN ,  BRIGHT THERESA ANNE DR

IPC: B41M5/24 ,  B41M5/26 ,  C08K3/00 ,  C08K3/013 ,  C08K5/00

Abstract: Thermoplastic moulding compositions containing, as essential components, A) from 30 to 99.995 % by weight of a thermoplastic polymer, B) from 0.005 to 5 % by weight of an inorganic sub-group metal salt, and C) from 0 to 69.995 % by weight of fibrous or particulate fillers, or mixtures thereof. u

公开(公告)号：DE4208053A1

公开(公告)日：1992-09-24

申请号：DE4208053

申请日：1992-03-13

Applicant: BASF AG

Inventor： SCHMELZER GERHARD ,  SCHILDKNECHT ALEXANDER ,  GRIMM GERHARD ,  WELZ MARTIN

IPC: B06B1/04 ,  B23K20/12 ,  G05D19/02 ,  H02K33/18

Abstract: An electrical energy source (E) is provided for the drive motor, which provides an alternating voltage which is transformed by a phase control circuit (P) and an impulse generator (I) into an impulse-form alternating voltage, the frequency and the negative and positive amplitudes of which are adjustable independently from one another. The electrical energy source (E) consists of an alternating voltage source (G) to which is connected to power part (L) which supplies the motor, the two push-pull power switches (Th) being controllable by a control part (ZG1,ZG2) of the phase control circuit(P). The two control parts are alternatively activatable by an adjustable impulse generator (I) synchronisable with the alternating voltage of the source (G). USE - For welding thermoplastic materials in particular, to prevent components welding together due to heat generated through friction.

公开(公告)号：DE3924484A1

公开(公告)日：1991-01-31

申请号：DE3924484

申请日：1989-07-25

Applicant: BASF AG

Inventor： WELZ MARTIN ,  WEBER HEINZ DR

IPC: C08J7/02 ,  C09J7/00

Abstract: Adhesive film (I) is based on a thermoplastic polymer (II) and contains 1-50 wt.% of a liq. (III) which swells but does not dissolve (II) and lowers its Tg by more than 20 deg.C. (II) is a polyether-sulphone, polyamide, polycarbonate, polyether-e or thermoplastic polyurethane; (I) is 20-2000 microns thick and contains reinforcing fibres and/or metal ply. USE/ADVANTAGE - (I) is useful for bonding moulded parts of thermoplastics. Bonding such moulded parts comprises placing (I) (based on the same polymer as the parts) between the parts and pressing the assembly together at a temp. below the Tg of the pure polymer but above the Tg of the swollen polymer; pref. the pressure applied is higher than the vapour pressure of (III) at the test temp.. Suitable (III) are, e.g. MEK, acetone, CH2Cl2 (for polyether-sulphone); water/ethanol or water/ethanol/ketone (for polyamide 6, 66, 6/66 etc.); DMF and/or ketone (for thermoplastic PU); ketone and/or CH2Cl2 (for polycarbonate); THF and/or CH2Cl2 (for polyether-imide).

公开(公告)号：DE3907783A1

公开(公告)日：1990-09-20

申请号：DE3907783

申请日：1989-03-10

Applicant: BASF AG

Inventor： HELLWIG KARL-RUEDIGER ,  KROEBL KARL DR ,  WELZ MARTIN

IPC: B29C65/08 ,  B29C65/78

Abstract: The apparatus for bonding moulded parts by ultrasound, in particular for producing optical storage discs, comprises a sonotrode (1), via which ultrasonic vibrations can be transferred to individual regions of the moulded parts (8, 9), a counterpressure plate (2) and a device (11) for the mutual positioning of the moulded parts. The sonotrode has a clearance (3) with offset vertical bounding faces (4, 5), of which the bounding face (4) largely covers the outer edge of the moulded parts and the bounding face (5) is formed by the device for positioning the moulded parts.

公开(公告)号：AT47686T

公开(公告)日：1989-11-15

申请号：AT86100543

申请日：1986-01-17

Applicant: BASF AG

Inventor： SEILER ERHARD DR ,  KAISER UWE ,  WELZ MARTIN ,  GIESEN KLAUS ,  THEYSOHN RAINER DR ,  SCHLAG JOHANNES DR ,  GRZESITZA JOHANNES

IPC: B29B9/16 ,  B29B13/02 ,  B29C45/00 ,  B29C47/00 ,  B29C47/54 ,  B29C70/88 ,  B29K105/24 ,  H01B1/00 ,  H01B1/22 ,  H01B1/24

公开(公告)号：DE3478929D1

公开(公告)日：1989-08-17

申请号：DE3478929

申请日：1984-11-22

Applicant: BASF AG

Inventor： WERNER FRANK DR ,  BLUM RAINER ,  HORN PETER DR ,  WELZ MARTIN ,  OSTERLOH ROLF DR

IPC: C08G18/00 ,  C08G18/08 ,  C08G18/48 ,  C08G18/70 ,  C08G18/72 ,  C08G18/79 ,  C08G18/80 ,  C08J9/02 ,  C08K7/02

Abstract: Reinforced cellular or noncellular molded polyurethane parts are prepared by heating a mixture of reinforcing materials and a heat-curable composition of polyisocyanates and polyols in an open or closed mold, said composition being storage-stable at room temperature and containing, optionally, auxiliaries and additives. In said composition, the polyisocyanate is dispersed in the form of discreet particles having particle diameters from 0.1 to 150 mu m in the polyol and the polyisocyanate particles are deactivated on their surfaces such that from 0.01 to 20 equivalent percent of the total available isocyanate groups are deactivated and such that the ratio of free isocyanate groups to hydroxyl groups is from 0.7:1 to 2.5:1. The polyurethane molded parts are suitable for use as self-supporting trim parts, reinforcement parts, or molded parts for various applications.

公开(公告)号：DE3535272A1

公开(公告)日：1987-04-09

申请号：DE3535272

申请日：1985-10-03

Applicant: BASF AG

Inventor： WELZ MARTIN ,  WAHL LUDWIG

IPC: B29C70/38 ,  B29C70/42 ,  B29C67/14

Abstract: Needle-punched woven or non-woven fabrics are used for the production of semi-finished products from fibre-reinforced thermoplastics, one or more of these textile sheets being formed, possibly being merged with a thermoplastic melt after their heating, being pressed together in a compression zone and cooled. The woven or non-woven fabrics preferably comprise glass fibres, carbon fibres and/or synthetic fibres.

公开(公告)号：AU2931184A

公开(公告)日：1984-12-13

申请号：AU2931184

申请日：1984-06-08

Applicant: BASF AG

Inventor： WAHL LUDWIG ,  SEILER ERHARD ,  WELZ MARTIN

IPC: B29C70/12 ,  D04H13/00 ,  B29D3/02 ,  B32B17/02 ,  D04H1/46