公开(公告)号：CA2038906A1

公开(公告)日：1991-09-24

申请号：CA2038906

申请日：1991-03-22

Applicant: HOECHST AG

Inventor： GROH WERNER ,  BROCKMEYER ANDREAS ,  THEIS JUERGEN ,  STEHLIN THOMAS

IPC: B29C45/00 ,  B29C45/14 ,  B29D11/00 ,  G02B1/04 ,  G02B6/28

Abstract: HOE 90/F 095 Process for the production of optical couplers from polymers A process for the production of optical couplers from polymers in which the coupler structure is produced by injection molding and the polymers employed are preferably amorphous polymers, in particular PMMA, polystyrenes, polycarbonates, polyolefins, polyesters, polysulfones, polyether sulfones, polyether imides, polyarylates, polyamides or polyester carbonates. The coupler element is solid and may be coated with a polymer which has a lower refractive index than the coupler, so that the light propagation takes place in the coupler itself.

公开(公告)号：ZA901796B

公开(公告)日：1990-11-28

申请号：ZA901796

申请日：1990-03-08

Applicant: HOECHST AG

Inventor： DAMMEL RALPH ,  RALPH DAMMEL ,  PAWLOSCKI GEORG ,  GEORG PAWLOSCKI ,  LINGNAU JUERGEN ,  JUERGEN LINGNAU ,  THEIS JUERGEN ,  JUERGEN THEIS

IPC: G03F7/039 ,  C07C271/28 ,  C07C275/50 ,  C08K5/00 ,  C08L61/00 ,  C08L61/04 ,  G03F7/004 ,  H01L21/027 ,  G03F

Abstract: A radiation-curable mixture is proposed which contains a compound which forms an acid when exposed to high-energy radiation and a compound which is acid-cleavable, and which is characterised in that the compound which forms an acid contains aliphatically bound halogen (chlorine or bromine) and has a pKa of less than 12 or is a derivative of a compound having such a pKa, which derivative can be converted into the free compound by acid catalysis. The composition claimed, and in particular the recording material prepared therefrom, has a higher sensitivity and an improved resolution, and in addition exhibits no image haze after development.

公开(公告)号：CA2011728A1

公开(公告)日：1990-09-11

申请号：CA2011728

申请日：1990-03-08

Applicant: HOECHST AG

Inventor： DAMMEL RALPH ,  LINGNAU JUERGEN ,  PAWLOWSKI GEORG ,  THEIS JUERGEN

IPC: G03F7/039 ,  G03F7/004 ,  H01L21/027

Abstract: A positive radiation-sensitive mixture is disclosed which contains a compound which forms an acid under the action of high-energy radiation, and an acid-cleavable compound, wherein the compound which forms an acid contains aliphatically bound halogen (chlorine or bromine) and has a pKa value of less than about 12 or is a derivative of a compound having such a pKa value which can be converted into the free compound by acid catalysis. A positive recording material and a process for recording highenergy radiation using the material are also disclosed. The mixture, and in particular the recording material produced therefrom, has relatively high sensitivity and improved resolution and, in addition, does not exhibit image fogging after development.

公开(公告)号：BR8903078A

公开(公告)日：1990-02-06

申请号：BR8903078

申请日：1989-06-23

Applicant: HOECHST AG

Inventor： DAMMEL RALPH ,  DOESSEL KARL-FRIEDRICH ,  LINGNAU JUERGEN ,  THEIS JUERGEN

IPC: G03F7/004 ,  G03F7/029 ,  G03F7/038 ,  H01L21/027 ,  H01L21/30 ,  G03F7/10 ,  G03C1/68

Abstract: A radiation-curable composition which comprises a compound that forms an acid under the action of high-energy radiation and an acid-hardening substance, wherein the compound forming an acid contains aromatically linked chlorine or bromine and has a pKa value below 12. The composition and the recording material prepared therefrom display increased sensitivity, improved resolution and a high etch resistance after development.

公开(公告)号：AT115593T

公开(公告)日：1994-12-15

申请号：AT90906164

申请日：1990-04-12

Applicant: HOECHST AG

Inventor： GROH WERNER ,  HERBRECHTSMEIER PETER ,  HEUMUELLER RUDOLF ,  THEIS JUERGEN ,  WIENERS GERHARD

IPC: C08F20/02 ,  C08F16/14 ,  C08F20/10 ,  C08F20/22 ,  C08F214/26 ,  C08F216/14 ,  C08F220/22 ,  G02B1/04 ,  G02B6/00 ,  G09B1/04

Abstract: A thermoplastic molding compound consisting of units of 2,3-difluoroacrylic acid esters or their deuterated derivatives, or containing units of these esters, is distinguished by a high glass transition temperature and a high transparency. It is therefore suitable for the manufacture of beam waveguides for long transmission distances and high continuous use temperatures.

公开(公告)号：CA2055772A1

公开(公告)日：1993-05-19

申请号：CA2055772

申请日：1991-11-18

Applicant: HOECHST AG

Inventor： STEHLIN THOMAS ,  THEIS JUERGEN ,  VAAHS TILO ,  BRUECK MARTIN ,  BROCKMEYER ANDREAS

IPC: B29C47/00 ,  B29C71/00 ,  B29K83/00 ,  B29L11/00 ,  C08G77/26 ,  C08G77/28 ,  D01F6/76 ,  G02B1/04 ,  G02B6/00 ,  B29D11/00 ,  B29C71/02 ,  G02B6/16

Abstract: HOE 9O/F 345 Heat-resistant optical moldings, and a process for their production A process for the production of optical moldings from polysilazanes or polyhydridochlorosilazanes in which the polysilazanes or polyhydridochlorosilazanes are pressed to give moldings or dissolved in a solvent and extruded and are subsequently exposed to a gas atmosphere at a temperature in the range from 10 to 200.degree.C and a relative humidity in the range from 20 to 100% for from 0.1 to 24 hours. The moldings have a core/cladding structure, the cladding comprising from 1 to 3% by weight of O, from 20 to 25% by weight of N and from 30 to 40% by weight of Si, and the core comprising 100% by weight of a polysilazane or polyhydridochlorosilazane.

公开(公告)号：CA2041212A1

公开(公告)日：1991-10-27

申请号：CA2041212

申请日：1991-04-25

Applicant: HOECHST AG

Inventor： COUTANDIN JOCHEN ,  THEIS JUERGEN ,  GROH WERNER ,  BROCKMEYER ANDREAS

IPC: G02B6/00 ,  G02B6/24 ,  G02B6/28 ,  G02B6/287 ,  G02B6/38 ,  G02B6/26 ,  G02B6/40

Abstract: HOE 90/F 128 Process for producing an optical coupler for polymer optical waveguides Process for producing an optical coupler for polymer optical waveguides by arranging the optical waveguides in the same sense and bundling them by means of a plastic shrink-on sleeve. In this process, two to 105 polymer optical waveguides are arranged in the same sense and bundled and a plastic tube is put over the mixing region. Then a piece of plastic shrink-on sleeve is pushed over the plastic tube and the shrink-on sleeve is heated to a temperature at which it contracts. The shrinkage temperature of the shrink-on sleeve is inside the thermoelastic temperature range of the plastic tube. The optical waveguide bundle may be stretched during or after heating.

公开(公告)号：ZA9001797B

公开(公告)日：1990-11-28

申请号：ZA9001797

申请日：1990-03-08

Applicant: HOECHST AG

Inventor： DAMMEL RALPH ,  RALPH DAMMEL ,  PAWLOWSKI GEORG ,  GEORG PAWLOWSKI ,  LINGNAU JUERGEN ,  JUERGEN LINGNAU ,  THEIS JUERGEN ,  JUERGEN THEIS

IPC: G03F7/039 ,  G03F7/004 ,  H01L21/027 ,  G03F

CPC classification number: G03F7/0045

公开(公告)号：CA1332456C

公开(公告)日：1994-10-11

申请号：CA613575

申请日：1989-09-27

Applicant: HOECHST AG

Inventor： GROH WERNER ,  COUTANDIN JOCHEN ,  HERBRECHTSMEIER PETER ,  THEIS JUERGEN

IPC: G01J1/02 ,  C09K11/00 ,  G01D5/26 ,  G02B6/00 ,  G01J1/58 ,  G02B5/02 ,  G01V9/04

Abstract: Light detector A novel light detector consists of a plate-like lightabsorbing body and at least one optical waveguide connected thereto. Both parts of the light detector contain a fluorescent dye, whereby the irradiated light is converted into a fluorescence radiation. The radiation is guided by total reflection to a light-sensitive semiconductor element and is measured there. The light detector is suitable as light barrier, fiber-optic revolution counter or UV detector.

公开(公告)号：CA1319799C

公开(公告)日：1993-07-06

申请号：CA582392

申请日：1988-11-04

Applicant: HOECHST AG

Inventor： COUTANDIN JOCHEN ,  THEIS JUERGEN ,  GROH WERNER ,  HERBRECHTSMEIER PETER

IPC: B29C61/02 ,  B29C61/06 ,  B29D11/00 ,  G02B6/28

Abstract: High-efficiency optical couplers for polymer optical waveguides are obtained when optical waveguides are bundled and fused by means of a piece of plastic shrink sleeve, the plastic shrink sleeve being heated above the shrinkage temperature. The process is simple and cost-advantageous.