NO164522B - LIGHTING DEVICE FOR ELECTRIC WELDING DEVICE. - Google Patents
LIGHTING DEVICE FOR ELECTRIC WELDING DEVICE. Download PDFInfo
- Publication number
- NO164522B NO164522B NO853761A NO853761A NO164522B NO 164522 B NO164522 B NO 164522B NO 853761 A NO853761 A NO 853761A NO 853761 A NO853761 A NO 853761A NO 164522 B NO164522 B NO 164522B
- Authority
- NO
- Norway
- Prior art keywords
- welding
- cyanate
- electric welding
- aryl
- solution
- Prior art date
Links
- 238000003466 welding Methods 0.000 title abstract 7
- 229920003023 plastic Polymers 0.000 claims description 14
- 239000004033 plastic Substances 0.000 claims description 14
- -1 aryl cyanates Chemical class 0.000 claims description 12
- 125000004185 ester group Chemical group 0.000 claims description 9
- 229920002635 polyurethane Polymers 0.000 claims description 7
- 239000004814 polyurethane Substances 0.000 claims description 7
- 239000003381 stabilizer Substances 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 5
- 238000005286 illumination Methods 0.000 abstract 1
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 12
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 6
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 6
- 235000019439 ethyl acetate Nutrition 0.000 description 5
- 229920000728 polyester Polymers 0.000 description 5
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 4
- 239000011888 foil Substances 0.000 description 4
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 235000011037 adipic acid Nutrition 0.000 description 3
- 239000001361 adipic acid Substances 0.000 description 3
- 150000001718 carbodiimides Chemical class 0.000 description 3
- XLJMAIOERFSOGZ-UHFFFAOYSA-M cyanate group Chemical group [O-]C#N XLJMAIOERFSOGZ-UHFFFAOYSA-M 0.000 description 3
- XLJMAIOERFSOGZ-UHFFFAOYSA-N cyanic acid Chemical class OC#N XLJMAIOERFSOGZ-UHFFFAOYSA-N 0.000 description 3
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 3
- JXCHMDATRWUOAP-UHFFFAOYSA-N diisocyanatomethylbenzene Chemical compound O=C=NC(N=C=O)C1=CC=CC=C1 JXCHMDATRWUOAP-UHFFFAOYSA-N 0.000 description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 3
- 239000012948 isocyanate Substances 0.000 description 3
- 150000002513 isocyanates Chemical class 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 230000003301 hydrolyzing effect Effects 0.000 description 2
- 239000004922 lacquer Substances 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 description 2
- UFKLQICEQCIWNE-UHFFFAOYSA-N (3,5-dicyanatophenyl) cyanate Chemical compound N#COC1=CC(OC#N)=CC(OC#N)=C1 UFKLQICEQCIWNE-UHFFFAOYSA-N 0.000 description 1
- MUAFEFAYKJZTHJ-UHFFFAOYSA-N (4-acetylphenyl) cyanate Chemical compound CC(=O)C1=CC=C(OC#N)C=C1 MUAFEFAYKJZTHJ-UHFFFAOYSA-N 0.000 description 1
- GUGZCSAPOLLKNG-UHFFFAOYSA-N (4-cyanatophenyl) cyanate Chemical compound N#COC1=CC=C(OC#N)C=C1 GUGZCSAPOLLKNG-UHFFFAOYSA-N 0.000 description 1
- UGMKNMPRUHJNQK-UHFFFAOYSA-N (4-methylphenyl) cyanate Chemical compound CC1=CC=C(OC#N)C=C1 UGMKNMPRUHJNQK-UHFFFAOYSA-N 0.000 description 1
- MXRPMTXJSFUXHC-UHFFFAOYSA-N (4-nitrophenyl) cyanate Chemical compound [O-][N+](=O)C1=CC=C(OC#N)C=C1 MXRPMTXJSFUXHC-UHFFFAOYSA-N 0.000 description 1
- 125000002030 1,2-phenylene group Chemical group [H]C1=C([H])C([*:1])=C([*:2])C([H])=C1[H] 0.000 description 1
- 125000001989 1,3-phenylene group Chemical group [H]C1=C([H])C([*:1])=C([H])C([*:2])=C1[H] 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 description 1
- RALIZUCYSQVUEU-UHFFFAOYSA-N [2-(10-methylundecyl)phenyl] cyanate Chemical compound C(CCCCCCCCC(C)C)C1=C(C=CC=C1)OC#N RALIZUCYSQVUEU-UHFFFAOYSA-N 0.000 description 1
- AHZMUXQJTGRNHT-UHFFFAOYSA-N [4-[2-(4-cyanatophenyl)propan-2-yl]phenyl] cyanate Chemical compound C=1C=C(OC#N)C=CC=1C(C)(C)C1=CC=C(OC#N)C=C1 AHZMUXQJTGRNHT-UHFFFAOYSA-N 0.000 description 1
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000003776 cleavage reaction Methods 0.000 description 1
- 150000001913 cyanates Chemical class 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- SZDGUPMQRXJXLM-UHFFFAOYSA-N nonyl cyanate Chemical compound CCCCCCCCCOC#N SZDGUPMQRXJXLM-UHFFFAOYSA-N 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- CWHFDTWZHFRTAB-UHFFFAOYSA-N phenyl cyanate Chemical compound N#COC1=CC=CC=C1 CWHFDTWZHFRTAB-UHFFFAOYSA-N 0.000 description 1
- 229920001228 polyisocyanate Polymers 0.000 description 1
- 239000005056 polyisocyanate Substances 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 230000007017 scission Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/095—Monitoring or automatic control of welding parameters
- B23K9/0956—Monitoring or automatic control of welding parameters using sensing means, e.g. optical
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Arc Welding Control (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Laser Beam Processing (AREA)
Abstract
En belysningsanordning for et elektrisk sveiseapparat består av en anordning (5) hvorfra lyskilden ledes frem til sveisehåndtaket (1) gjennom en lyslederkabel (8) som ved sin ene ende (9) munner ut et sted på undersiden av sveisehåndtaket (1) og belyser det sted som sveisepistolen. (1) fares hen imot.Ved bruk av en slik belysningsanordning. er det gjort mulig for sveisere å sveise på ellers utilgjengelige steder uten å fjerne sveisehjelmen fra øynene, hvorved fenomenet "sveiseøyne" blir. unngått.An illumination device for an electric welding apparatus consists of a device (5) from which the light source is led to the welding handle (1) through a light guide cable (8) which at one end (9) opens out somewhere on the underside of the welding handle (1) and illuminates it. place as the welding gun. (1) hazard. When using such a lighting device. it is made possible for welders to weld in otherwise inaccessible places without removing the welding helmet from the eyes, whereby the phenomenon of "welding eyes" becomes. avoided.
Description
Anvendelse av stabiliserende middel overfor innvirkning av varme og fuktighet i estergruppeholdige polyuretankunststoffer. Use of stabilizing agents against the effects of heat and humidity in polyurethane plastics containing ester groups.
Estergruppeholdige polyuretankunststoffer viser den ulempe at de har tendens Polyurethane plastics containing ester groups have the disadvantage that they tend to
til en hydrolytisk spaltning ved innvirkning av varme og fuktighet. Disse estergruppeholdige polyuretankunstoffer anvendes meget til fremstilling av porøse eller to a hydrolytic cleavage under the influence of heat and moisture. These polyurethane resins containing ester groups are widely used for the production of porous or
homogene kunststoffer i form av kunst-stoffelastiske produkter, lakker, filmer, homogeneous plastics in the form of plastic-fabric elastic products, lacquers, films,
støpeharpikser og skumstoffer. molding resins and foams.
Det er allerede kjent å anvende kar-bodiimider som stabiliserende middel overfor innvirkning av varme og fuktighet, dvs. It is already known to use carbodiimides as stabilizing agents against the effects of heat and moisture, i.e.
altså for å hindre aldring ved hydrolytisk thus to prevent aging by hydrolytic
innvirkning i estergruppeholdige kunststoffer. Slike stabiliseringsmidler har imidler-tid for mange anvendelsesformål et for impact in plastics containing ester groups. Such stabilizers, however, have too many applications for one purpose
høyt damptrykk og har tendens til van-dringsforeteelser. Deres anvendelse er un-dertiden vanskelig ved forskjellige anven-delsesområder, eksempelvis der hvor nett-dannelse av polyesterene må gjennomføres high vapor pressure and tends to migration phenomena. Their application is sometimes difficult in different areas of application, for example where net formation of the polyesters must be carried out
ved polyfunksjonelle isocyanater da karbodiimidene kan forsinke nettdannelsesfor-løpet, spesielt når det for reaksjonsforløpet with polyfunctional isocyanates as the carbodiimides can delay the course of network formation, especially when the course of the reaction
er nødvendig med nærvær av mindre mengder vann. is required with the presence of smaller amounts of water.
Oppfinnelsens gjenstand er anvendel-sen av arylcyanater som stabiliserende middel overfor innvirkning av varme og fuktighet i estergruppeholdige polyuretankunststoffer. Arylcyanatene utmerker seg The object of the invention is the use of aryl cyanates as stabilizing agents against the effects of heat and humidity in polyurethane plastics containing ester groups. The aryl cyanates excel
sammenlignet med karbodiimidene av sam-menlignbar molekylvekt ved at et større compared to the carbodiimides of comparable molecular weight in that a larger
antall virksomme cyanatgrupper kan være number of active cyanate groups can be
inneholdt i stabilisatoren, hvorved det kan contained in the stabilizer, whereby it can
oppnåes en øket beskyttelsesvirkning med mengdemessig samme anvendelse. De for-blir også ved høyere reaksjon- eller for-arbeidelsestemperaturer i det estergruppeholdige polyuretankunststoff. En vandring av cyansyreestere til det utreagerte kunst-stoffs overflate iakttas heller ikke ved arylcyanater med liten molekylvekt. an increased protective effect is achieved with the same amount of application. They also remain at higher reaction or processing temperatures in the ester group-containing polyurethane plastic. A migration of cyanic acid esters to the surface of the unreacted plastic is also not observed with low molecular weight aryl cyanates.
Arylcyanater er tilgjengelig ifølge DAS 1.195.764 eller ifølge Chemische Berichte 97 Aryl cyanates are available according to DAS 1,195,764 or according to Chemische Berichte 97
(1964) 3012—3017. Ifølge oppfinnelsen egnede en- eller flerverdige arylcyanater er f. eks. fenylcyanat, o-, m- eller p-fenylen-biscyanat, o-, m- eller p-metylfenylcyanat, o-, m- eller p-acetyl-fenylcyanat, o-, m-eller p-nitrofenylcyanat, n-nonylcyanat, iso-dodecyl-fenylcyanat, 2,2-bis-(p-cyana-tofenyl)-propan, 1,3,5-tricyanato-benzol, 1,5-naftalindicyanat, o-, m- eller p-di-me-tylaminofenylcyanat. (1964) 3012—3017. According to the invention, suitable mono- or polyvalent aryl cyanates are e.g. phenyl cyanate, o-, m- or p-phenylene biscyanate, o-, m- or p-methylphenyl cyanate, o-, m- or p-acetyl phenyl cyanate, o-, m- or p-nitrophenyl cyanate, n-nonyl cyanate, iso-dodecyl-phenylcyanate, 2,2-bis-(p-cyanatophenyl)-propane, 1,3,5-tricyanato-benzene, 1,5-naphthalenedicyanate, o-, m- or p-di-me- tylaminophenyl cyanate.
Ved cyanatenes substitusjon har man det for hånden å variere reaksjonsevnen til OCN-gruppen således at de tilpasses de eventuelle krav. When substituting the cyanates, it is possible to vary the reactivity of the OCN group so that they are adapted to the possible requirements.
Videre lar det seg ved langkjedede ali-fatiske hydrokarboner anvende substituer-te cyansyreestere, hvorved sluttproduktet får vannavvisende egenskaper. Furthermore, with long-chain aliphatic hydrocarbons, it is possible to use substituted cyanic acid esters, whereby the end product acquires water-repellent properties.
Fortrinnsvis anvendes til stabilisering polyfunksjonelle cyansyreestere, som ved det større antall av cyanatgrupper ved anvendelse i tilsvarende mengder sikrer en høyere stabiliseringsvirkning. Preferably, polyfunctional cyanic acid esters are used for stabilization, which with the greater number of cyanate groups when used in corresponding amounts ensure a higher stabilization effect.
Arylcyanatet kan anvendes enkelt eller i blanding som ufortynnet stoff eller som oppløsning i organiske oppløsnings-midler. Egnede oppløsningsmidler er f. eks. aceton, eddikestere, benzen, kloroform, alkohol, dimetylformamid, tetraklorkarbon, acetonitril, dimetylsulfoksyd. The aryl cyanate can be used singly or in a mixture as an undiluted substance or as a solution in organic solvents. Suitable solvents are e.g. acetone, acetic esters, benzene, chloroform, alcohol, dimethylformamide, carbon tetrachloride, acetonitrile, dimethyl sulfoxide.
Oppløsningskonsentrasjonen er da uten avgjørelse og retter seg hver gang etter de praktiske krav. Tilsetningen foregår even-tuelt til en av utgangskomponentene for kunststoffremstillingen. Den kan imidler-tid også foregå under kunststoffremstillingen og hvis det er teknisk mulig kan arylcyanatene inforleves også til det ferdige kunststoff. Det lønner seg å anvende mel-lom 0,0005 og 0,05 mol arylcyanat pr. 100 g av det estergruppeholdige polyuretankunststoff som skal stabiliseres. The solution concentration is then without a decision and is always based on the practical requirements. The addition takes place possibly to one of the starting components for the production of plastics. However, it can also take place during the manufacture of the plastic and if it is technically possible, the aryl cyanates can also be incorporated into the finished plastic. It pays to use between 0.0005 and 0.05 mol of aryl cyanate per 100 g of the ester group-containing polyurethane plastic to be stabilized.
Arylcyanatenes stabiliserende virkning strekker seg til alle estergruppeholdige po-lyuretankunststof f er. Slike kunststoffer kan eksempelvis foreligge som lakker, folier, overtrekk, fibre, skumstoffer, elastomere, støpeharpikser eller presslegemer. Kjemisk sett kan de eksempelvis være polyaddisjons-produkter av polyestere og polyisocyanater. The stabilizing effect of the aryl cyanates extends to all polyurethane plastics containing ester groups. Such plastics can, for example, be present as lacquers, foils, coverings, fibres, foams, elastomers, casting resins or pressed bodies. Chemically speaking, they can for example be polyaddition products of polyesters and polyisocyanates.
Eksempel 1: Example 1:
100 g av en polyester av 14 mol adipin-syre og 15 mol dietylenglykol (hydroksyl-tall 40; syre tall 1,0) omsettes i blanding med 100 g av en polyester av 100 mol adi-pinsyre og 11 mol etylenglykol (hydroksyl-tall 55; syretall 1,0) med 16 g toluylendi-isocyanat til et i etylacetat til 30 vektprosent med 22.000 cP/20° C oppløselig pro-dukt. Til 100 g av denne oppløsning settes 5 g av en 75 %-ig oppløsning i etylacetat 100 g of a polyester of 14 mol adipic acid and 15 mol diethylene glycol (hydroxyl number 40; acid number 1.0) is reacted in a mixture with 100 g of a polyester of 100 mol adipic acid and 11 mol ethylene glycol (hydroxyl number 55; acid number 1.0) with 16 g of toluylene diisocyanate to a product soluble in ethyl acetate to 30% by weight with 22,000 cP/20° C. To 100 g of this solution, add 5 g of a 75% solution in ethyl acetate
av polyfunksjonelt isocyanat med 12,5 % NCO, dannet ved omsetning av 1 mol tri-metylolpropan og 3 mol toluylen diisocya-nat, såvel som 2,5 g av en 10 %-ig oppløs-ning i aceton av et arylcyanat ifølge tabellen. of polyfunctional isocyanate with 12.5% NCO, formed by reacting 1 mol of trimethylolpropane and 3 mol of toluylene diisocyanate, as well as 2.5 g of a 10% solution in acetone of an aryl cyanate according to the table.
De av blandingen ved fordampning av oppløsningsmidlet dannede 0,5 mm tykke folier har etter en oppholdstid på 48 timer ved 20° C og 60% relativ fuktighet sammenlignet med den uten stabiliseringsmid-del fremstilte folie de i tabellen oppførte prøveverdier (ikke aldret) og etter 12 da-gers aldring ved 95 % relativ fuktighet og 70° C de likeledes angitte prøveverdier (aldret). After a residence time of 48 hours at 20° C and 60% relative humidity, the 0.5 mm thick foils formed from the mixture by evaporation of the solvent have the sample values listed in the table (not aged) compared to the foil produced without stabilizers and after 12-day aging at 95% relative humidity and 70° C the test values indicated (aged).
Eksempel 2: Example 2:
Av 100 g av en polyester av 10 mol adi-pinsyre og 11 mol etylenglykol (hydroksyl-tall 55; syretall 1,0) og 8 g toluylen-diiso-cyanat fremstilles et i etylacetat til 30 vektprosent oppløselig addukt. Oppløsnin-gens viskositet utgjør 15,000 cP/20° C. 100 g av denne oppløsning tilsettes 5 g av en 75 %-ig oppløsning i etylacetat av det polyfunksjonelle isocyanat fra eksempel 1. From 100 g of a polyester of 10 mol of adipic acid and 11 mol of ethylene glycol (hydroxyl number 55; acid number 1.0) and 8 g of toluylene diisocyanate, an adduct soluble in ethyl acetate to 30% by weight is prepared. The viscosity of the solution is 15,000 cP/20° C. 100 g of this solution, 5 g of a 75% solution in ethyl acetate of the polyfunctional isocyanate from example 1 is added.
Til oppløsningen settes de i tabellen angitte arylcyanater. Folier fremstillet fra oppløsningen undersøkes, under betingel-sene angitt i eksempel 1. The aryl cyanates specified in the table are added to the solution. Foils produced from the solution are examined under the conditions stated in example 1.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DK540884A DK154481C (en) | 1984-11-14 | 1984-11-14 | LIGHTING FOR AN ELECTRIC WELDING APPLIANCE |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| NO853761L NO853761L (en) | 1986-05-15 |
| NO164522B true NO164522B (en) | 1990-07-09 |
| NO164522C NO164522C (en) | 1990-10-17 |
Family
ID=8142187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO853761A NO164522C (en) | 1984-11-14 | 1985-09-25 | LIGHTING DEVICE FOR ELECTRIC WELDING DEVICE. |
Country Status (6)
| Country | Link |
|---|---|
| DE (1) | DE3527487A1 (en) |
| DK (1) | DK154481C (en) |
| FR (1) | FR2572975A1 (en) |
| GB (2) | GB8527760D0 (en) |
| NO (1) | NO164522C (en) |
| SE (1) | SE8503838L (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3706943A1 (en) * | 1987-03-04 | 1988-09-22 | Medtronic Medizinisch Elektron | Illuminating device for a hand-held dental instrument |
| US5054106A (en) * | 1988-10-05 | 1991-10-01 | Fortune William S | Hot gas soldering system |
| DE8814574U1 (en) * | 1988-11-18 | 1990-01-04 | Effner GmbH, 1000 Berlin | Device for suction of liquid media |
| US6582219B1 (en) * | 2000-09-28 | 2003-06-24 | Charles T. Rockwell, Jr. | Torch illumination device |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3590232A (en) * | 1968-03-27 | 1971-06-29 | Radioptics Inc | Annular illuminator for dental tools or the like |
| US4222375A (en) * | 1978-03-10 | 1980-09-16 | Miguel Martinez | In vivo illumination system utilizing a cannula with a conical opening allowing a snap-fit with a conical lens and an aperture for flow of fluids and utilizing a housing with a spherical lens for focusing light onto fiber optics |
| JPS58196172A (en) * | 1982-05-12 | 1983-11-15 | Hitachi Ltd | Welding device provided with monitor |
| US4491719A (en) * | 1982-12-20 | 1985-01-01 | General Electric Company | Light pattern projector especially for welding |
| DK326383A (en) * | 1983-02-16 | 1984-08-17 | Christian Chemnitz | LIGHTING FOR A WELDING GUN |
| DE8306482U1 (en) * | 1983-03-07 | 1983-06-09 | Rameder, Nicolai, 8300 Landshut | TEXTILE COVER |
| GB2154930B (en) * | 1984-02-28 | 1988-11-09 | Microsurgical Administrative S | Forceps |
-
1984
- 1984-11-14 DK DK540884A patent/DK154481C/en active
-
1985
- 1985-07-31 DE DE19853527487 patent/DE3527487A1/en not_active Withdrawn
- 1985-08-16 SE SE8503838A patent/SE8503838L/en not_active Application Discontinuation
- 1985-09-25 NO NO853761A patent/NO164522C/en unknown
- 1985-10-31 FR FR8516239A patent/FR2572975A1/en active Pending
- 1985-11-11 GB GB858527760A patent/GB8527760D0/en active Pending
- 1985-11-13 GB GB08528038A patent/GB2167700B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| SE8503838D0 (en) | 1985-08-16 |
| DK540884A (en) | 1986-05-15 |
| NO853761L (en) | 1986-05-15 |
| NO164522C (en) | 1990-10-17 |
| GB8528038D0 (en) | 1985-12-18 |
| DK154481B (en) | 1988-11-21 |
| GB8527760D0 (en) | 1985-12-18 |
| GB2167700A (en) | 1986-06-04 |
| SE8503838L (en) | 1986-05-15 |
| GB2167700B (en) | 1988-07-13 |
| FR2572975A1 (en) | 1986-05-16 |
| DK154481C (en) | 1989-06-12 |
| DE3527487A1 (en) | 1986-05-15 |
| DK540884D0 (en) | 1984-11-14 |
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