NO132888B - - Google Patents
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- Publication number
- NO132888B NO132888B NO485370A NO485370A NO132888B NO 132888 B NO132888 B NO 132888B NO 485370 A NO485370 A NO 485370A NO 485370 A NO485370 A NO 485370A NO 132888 B NO132888 B NO 132888B
- Authority
- NO
- Norway
- Prior art keywords
- signals
- approx
- pass filter
- subscriber line
- gate circuit
- Prior art date
Links
- 238000000034 method Methods 0.000 claims description 21
- 239000002131 composite material Substances 0.000 claims 2
- 101150087426 Gnal gene Proteins 0.000 claims 1
- 239000011248 coating agent Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 claims 1
- 238000001914 filtration Methods 0.000 claims 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 40
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 38
- 239000000203 mixture Substances 0.000 description 28
- 230000001413 cellular effect Effects 0.000 description 24
- IMNIMPAHZVJRPE-UHFFFAOYSA-N triethylenediamine Chemical compound C1CN2CCN1CC2 IMNIMPAHZVJRPE-UHFFFAOYSA-N 0.000 description 24
- 239000004814 polyurethane Substances 0.000 description 22
- 229920002635 polyurethane Polymers 0.000 description 22
- 229920001281 polyalkylene Polymers 0.000 description 20
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 19
- -1 ether glycols Chemical class 0.000 description 17
- 150000001875 compounds Chemical class 0.000 description 16
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 14
- 238000004519 manufacturing process Methods 0.000 description 12
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical group CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 11
- 238000006243 chemical reaction Methods 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 230000008569 process Effects 0.000 description 9
- 125000006353 oxyethylene group Chemical group 0.000 description 8
- 229920001228 polyisocyanate Polymers 0.000 description 8
- 239000005056 polyisocyanate Substances 0.000 description 8
- 239000012190 activator Substances 0.000 description 7
- 125000002947 alkylene group Chemical group 0.000 description 7
- 229920000728 polyester Polymers 0.000 description 7
- 229920005862 polyol Polymers 0.000 description 7
- 150000003077 polyols Chemical class 0.000 description 7
- 229920001296 polysiloxane Polymers 0.000 description 7
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 6
- 238000009833 condensation Methods 0.000 description 6
- 230000005494 condensation Effects 0.000 description 6
- 239000000047 product Substances 0.000 description 6
- 239000004743 Polypropylene Substances 0.000 description 5
- 239000007859 condensation product Substances 0.000 description 5
- 239000006260 foam Substances 0.000 description 5
- 229920001155 polypropylene Polymers 0.000 description 5
- 239000011541 reaction mixture Substances 0.000 description 5
- RUELTTOHQODFPA-UHFFFAOYSA-N toluene 2,6-diisocyanate Chemical compound CC1=C(N=C=O)C=CC=C1N=C=O RUELTTOHQODFPA-UHFFFAOYSA-N 0.000 description 5
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical compound ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 description 4
- 239000003054 catalyst Substances 0.000 description 4
- 125000005442 diisocyanate group Chemical group 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 4
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 3
- 125000004432 carbon atom Chemical group C* 0.000 description 3
- 125000005702 oxyalkylene group Chemical group 0.000 description 3
- 229920000570 polyether Polymers 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 239000004721 Polyphenylene oxide Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- ZWVMLYRJXORSEP-UHFFFAOYSA-N 1,2,6-Hexanetriol Chemical compound OCCCCC(O)CO ZWVMLYRJXORSEP-UHFFFAOYSA-N 0.000 description 1
- SBJCUZQNHOLYMD-UHFFFAOYSA-N 1,5-Naphthalene diisocyanate Chemical compound C1=CC=C2C(N=C=O)=CC=CC2=C1N=C=O SBJCUZQNHOLYMD-UHFFFAOYSA-N 0.000 description 1
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 description 1
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 229920001400 block copolymer Polymers 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 210000003850 cellular structure Anatomy 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 125000003827 glycol group Chemical group 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate Chemical compound [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920001748 polybutylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 239000011496 polyurethane foam Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N urethane group Chemical group NC(=O)OCC JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/22—Arrangements for supervision, monitoring or testing
- H04M3/24—Arrangements for supervision, monitoring or testing with provision for checking the normal operation
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Interface Circuits In Exchanges (AREA)
- Telephonic Communication Services (AREA)
- Devices For Supply Of Signal Current (AREA)
- Polyurethanes Or Polyureas (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH156370A CH519834A (de) | 1970-02-03 | 1970-02-03 | Verfahren und Vorrichtung zur Auskoppelung von Signalen auf Teilnehmerleitungen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| NO132888B true NO132888B (fi) | 1975-10-13 |
| NO132888C NO132888C (fi) | 1976-01-21 |
Family
ID=4213344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO485370A NO132888C (fi) | 1970-02-03 | 1970-12-17 |
Country Status (7)
| Country | Link |
|---|---|
| CH (1) | CH519834A (fi) |
| DE (1) | DE2100457B2 (fi) |
| ES (1) | ES387708A1 (fi) |
| FI (1) | FI56463C (fi) |
| GB (1) | GB1327861A (fi) |
| NO (1) | NO132888C (fi) |
| YU (1) | YU34176B (fi) |
-
1970
- 1970-02-03 CH CH156370A patent/CH519834A/de not_active IP Right Cessation
- 1970-12-17 NO NO485370A patent/NO132888C/no unknown
- 1970-12-31 FI FI352270A patent/FI56463C/fi active
-
1971
- 1971-01-07 DE DE19712100457 patent/DE2100457B2/de not_active Ceased
- 1971-01-25 YU YU16171A patent/YU34176B/xx unknown
- 1971-01-28 ES ES387708A patent/ES387708A1/es not_active Expired
- 1971-04-19 GB GB2076171A patent/GB1327861A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FI56463B (fi) | 1979-09-28 |
| FI56463C (fi) | 1980-01-10 |
| YU34176B (en) | 1978-12-31 |
| NO132888C (fi) | 1976-01-21 |
| CH519834A (de) | 1972-02-29 |
| DE2100457B2 (de) | 1978-06-08 |
| GB1327861A (en) | 1973-08-22 |
| YU16171A (en) | 1978-06-30 |
| DE2100457A1 (de) | 1971-08-12 |
| ES387708A1 (es) | 1973-05-16 |
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