NO150282B - PROCEDURE FOR THE PREPARATION OF ASPHALT MIXTURES, SPECIAL FOR THE PREPARATION OF STREET TIRE - Google Patents
PROCEDURE FOR THE PREPARATION OF ASPHALT MIXTURES, SPECIAL FOR THE PREPARATION OF STREET TIRE Download PDFInfo
- Publication number
- NO150282B NO150282B NO760068A NO760068A NO150282B NO 150282 B NO150282 B NO 150282B NO 760068 A NO760068 A NO 760068A NO 760068 A NO760068 A NO 760068A NO 150282 B NO150282 B NO 150282B
- Authority
- NO
- Norway
- Prior art keywords
- asphalt
- weight
- rubber
- temperatures
- preparation
- Prior art date
Links
- 239000010426 asphalt Substances 0.000 title claims description 41
- 239000000203 mixture Substances 0.000 title claims description 16
- 238000000034 method Methods 0.000 title claims description 9
- 238000002360 preparation method Methods 0.000 title description 3
- 229920001971 elastomer Polymers 0.000 claims description 24
- 239000005060 rubber Substances 0.000 claims description 24
- 239000002699 waste material Substances 0.000 claims description 19
- 238000004821 distillation Methods 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 230000003647 oxidation Effects 0.000 claims description 7
- 238000007254 oxidation reaction Methods 0.000 claims description 7
- 239000003208 petroleum Substances 0.000 claims description 7
- 239000003921 oil Substances 0.000 claims description 6
- 238000007670 refining Methods 0.000 claims description 3
- 238000005336 cracking Methods 0.000 claims description 2
- 239000000295 fuel oil Substances 0.000 claims description 2
- 229930195733 hydrocarbon Natural products 0.000 claims description 2
- 150000002430 hydrocarbons Chemical class 0.000 claims description 2
- 239000012764 mineral filler Substances 0.000 claims description 2
- 239000003209 petroleum derivative Substances 0.000 claims description 2
- 238000007669 thermal treatment Methods 0.000 claims description 2
- 230000035515 penetration Effects 0.000 description 6
- 238000007792 addition Methods 0.000 description 4
- MWPLVEDNUUSJAV-UHFFFAOYSA-N anthracene Chemical compound C1=CC=CC2=CC3=CC=CC=C3C=C21 MWPLVEDNUUSJAV-UHFFFAOYSA-N 0.000 description 4
- 238000009835 boiling Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229920003052 natural elastomer Polymers 0.000 description 2
- 229920001194 natural rubber Polymers 0.000 description 2
- 201000004624 Dermatitis Diseases 0.000 description 1
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 208000010668 atopic eczema Diseases 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000011280 coal tar Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- XPFVYQJUAUNWIW-UHFFFAOYSA-N furfuryl alcohol Chemical compound OCC1=CC=CO1 XPFVYQJUAUNWIW-UHFFFAOYSA-N 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 239000004636 vulcanized rubber Substances 0.000 description 1
- 239000010920 waste tyre Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10C—WORKING-UP PITCH, ASPHALT, BITUMEN, TAR; PYROLIGNEOUS ACID
- C10C3/00—Working-up pitch, asphalt, bitumen
- C10C3/02—Working-up pitch, asphalt, bitumen by chemical means reaction
- C10C3/026—Working-up pitch, asphalt, bitumen by chemical means reaction with organic compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L95/00—Compositions of bituminous materials, e.g. asphalt, tar, pitch
Description
Oppfinnelsens gjenstand er en fremgangsmåte til fremstilling The object of the invention is a method for production
av asfaltblandinger, spesielt for fremstilling av gate- of asphalt mixtures, especially for the production of street
dekk. deck.
Prinsippielt benyttes i gateasfaltfremstillingsteknologien Principally used in road asphalt manufacturing technology
ingen modifiserende tilsetninger av hensyn til den store til-beredning av asfalter og omkostningene forbundet hermed. no modifying additions due to the extensive preparation of asphalt and the associated costs.
Metoder for å forbedre gatedekkene ved tilsetning til asfalten av ikke-vulkanisert naturlige eller syntetiske kautsjuker i en mengde opptil 5 vékt-% er kjent og utbrécft anvendt. Til-setningen av gjenvunnet kautsjuk (oppnådd ved å oppvarme kautsjukavfall til en temperatur på 180°C under et trykk på 5 atmosfærer i nærvær av peptiserende stoffer og plasifiserere) er også blitt benyttet. Disse tilsetninger forbedrer varig-heten av asfaltoverflaten og adhesjonen (stabiliteten, dvs. deformeringsmotstanden ved stor belastning, frysemotstand, oppmaling, adhesjon til aggregatet). Nevnte egenskaper er blitt utøvet i en noe mindre grad ved asfalt med kautsjukstøv-tilsetning. Methods for improving street surfaces by adding to the asphalt non-vulcanized natural or synthetic rubbers in an amount of up to 5% by weight are known and widely used. The addition of reclaimed rubber (obtained by heating waste rubber to a temperature of 180°C under a pressure of 5 atmospheres in the presence of peptizing substances and plasticizers) has also been used. These additives improve the durability of the asphalt surface and adhesion (stability, i.e. resistance to deformation under heavy load, resistance to freezing, grinding, adhesion to the aggregate). Said properties have been exercised to a somewhat lesser extent by asphalt with rubber dust addition.
Kjente asfalter modifisert ved hjelp av tilsetning av natur-gummi er dyr på grunn av de høye omkostninger av de anvendte råmaterialer i tilfeller gummi og gjenvunnet gummi og tekno-logien med å male vulkanisert gummiavfall til nødvendig nedsatt størrelse til ca. 0,1 mm er omstendelig og dyr. Known asphalts modified by the addition of natural rubber are expensive due to the high costs of the raw materials used in cases of rubber and recycled rubber and the technology of grinding vulcanized rubber waste to the necessary reduced size to approx. 0.1 mm is cumbersome and expensive.
Oppfinnelsens hensikt er fremstilling på en enkel måte av The purpose of the invention is the production in a simple way of
en asfaltiblanding inneholdende produkter fra termisk destruksjon av et gummiavfall for modifikasjon av asfaltene. an asphalt mixture containing products from the thermal destruction of a rubber waste for modification of the asphalts.
Modifiseringskomponenten oppnås ved å oppvarme gummiavfall The modification component is obtained by heating waste rubber
som kasserte dekk, slanger, industrielt avfall i et medium av petroleumasfalt og/eller av et ekstrakt etter raffineringen av oljer ved hjelp av selektivt oppløsningsmiddel og/eller tungprodukter av kulltjæredestilleringer ved en temperatur på 240-380°C. such as discarded tires, hoses, industrial waste in a medium of petroleum asphalt and/or of an extract after the refining of oils by means of a selective solvent and/or heavy products of coal tar distillations at a temperature of 240-380°C.
Oppfinnelsen vedrører en fremgangsmåte for fremstilling av asfaltblandinger for fremstilling av gatedekk og basert på asfalter og mineralfyllstoffer ved innføring i asfalt av avfallsgummi som blir utsatt for termisk behandling og homogenisert i nærvær av hydrokarboner, idet fremgangsmåten er karakterisert ved at 1-80 vekt-% avfallsgummi eller brukte dekk oppvarmes og destrueres ved temperaturer på 240-380°C, fortrinnsvis 290-320°C, i et medium av petroleumsasfalt og/eller ekstrakt fra selektiv oppløsningsraffinering av oljer og/eller tungoljer fra krakking av petroleumsprodukter, hvoretter dannede produkter utsettes for en destillasjon, fortrinnsvis under nedsatt trykk eller ved damp, og/eller oksydering med komprimert luft ved temperaturer på 200-320°C og at det til blandingen settes petroleumsasfalt inneholdende under 6 vekt-% av parafiner og/eller naturasfalt i en slik mengde at behandlet gummi i ferdig asfaltblanding tilsvarer 1-50 vekt-%. The invention relates to a method for the production of asphalt mixtures for the production of street tires and based on asphalts and mineral fillers by introducing waste rubber into the asphalt which is subjected to thermal treatment and homogenized in the presence of hydrocarbons, the method being characterized by 1-80% by weight of waste rubber or used tires are heated and destroyed at temperatures of 240-380°C, preferably 290-320°C, in a medium of petroleum asphalt and/or extract from selective solution refining of oils and/or heavy oils from the cracking of petroleum products, after which the products formed are subjected to a distillation, preferably under reduced pressure or with steam, and/or oxidation with compressed air at temperatures of 200-320°C and that petroleum asphalt containing less than 6% by weight of paraffins and/or natural asphalt is added to the mixture in such a quantity that treated rubber in finished asphalt mix corresponds to 1-50% by weight.
1-50 vekt-% avfallsgummi eller brukte dekk kan oppvarmes og destrueres i 99-50 vekt-% petroleumsasfalt inneholdende under 6 vekt-% parafiner og/eller naturlig asfalt ved temperaturer på 240-380°C, fortrinnsvis 290-320°C, og den oppnådde blanding kan utsettes for en destillasjon, fortrinnsvis under nedsatt trykk eller med damp og/eller for oksydering med komprimert luft ved temperaturer på 200-320°C. 1-50% by weight waste rubber or used tires can be heated and destroyed in 99-50% by weight petroleum asphalt containing less than 6% by weight paraffins and/or natural asphalt at temperatures of 240-380°C, preferably 290-320°C, and the resulting mixture can be subjected to a distillation, preferably under reduced pressure or with steam and/or to oxidation with compressed air at temperatures of 200-320°C.
Gummiavfallet kan utsettes for destruering ved å innføres i asfalten under oksyderingen og/eller destilleringsprosessen. The rubber waste can be exposed to destruction by being introduced into the asphalt during the oxidation and/or distillation process.
Den modifiserte asfalt kan utsettes for oksydasjonsprosessen The modified asphalt can be subjected to the oxidation process
ved hjelp av luft ved en temperatur på 220-320°C og/eller for destillering ved nedsatt trykk og/eller destillering med damp for å oppnå de ønskede egenskaper. Det er også mulig å adskille de lavtkokende komponenter fra den modifiserende komponent ved å utsette den for destillering ved nedsatt trykk og/eller med damp. Destillering av gummiavfallholdige produkter muliggjør å fjerne de lavtkokende dårligluktende komponenter av gummiavfallet og å oppnå en endelig asfalt som har en høyere antenn-elsestemperatur og en høyere termisk stabilitet. using air at a temperature of 220-320°C and/or for distillation at reduced pressure and/or distillation with steam to achieve the desired properties. It is also possible to separate the low-boiling components from the modifying component by subjecting it to distillation at reduced pressure and/or with steam. Distillation of rubber waste-containing products makes it possible to remove the low-boiling malodorous components of the rubber waste and to obtain a final asphalt having a higher ignition temperature and a higher thermal stability.
Gateasfalten som oppnås ifølge oppfinnelsen adskiller seg ved gode fordelaktige karakteristikker, spesielt termoplastiske. Asfaltoverflater oppnådd ved bruk av asfalt: modifisert ved hjelp av gummiavfall adskiller seg ved gode utøvelsesegen-skaper, spesielt ved god adhesjon til dekk og høybelastnings-motstand. The road asphalt obtained according to the invention is distinguished by good advantageous characteristics, especially thermoplastic. Asphalt surfaces obtained by using asphalt: modified with the help of rubber waste are distinguished by good performance properties, especially by good adhesion to tires and high load resistance.
Eksempel_l Example_l
53 kg asfaltresiduum inneholdende 3,2 vekt-% parafin oksyderes ved hjelp av luft til en penetrasjon ved en temperatur på 25°C tilsvarende 36. 50 kg av den dannede oksyderte asfalt blandes ved en temperatur på 380°C med 50 kg granulerte kasserte bildekk i løpet av 40 minutter under samtidig blåsing med overopphetet damp. Den dannede blanding destilleres ved et trykk på 15 mm kvikksølv og det dannes en asfalt med følgende egenskaper: 53 kg of asphalt residue containing 3.2% by weight paraffin is oxidized with the help of air to a penetration at a temperature of 25°C corresponding to 36. 50 kg of the formed oxidized asphalt is mixed at a temperature of 380°C with 50 kg of granulated discarded car tires within 40 minutes under simultaneous blowing with superheated steam. The resulting mixture is distilled at a pressure of 15 mm of mercury and an asphalt with the following properties is formed:
Bruddtemperaturen bestemmer den høyeste temperatur hvor The breaking temperature determines the highest temperature where
feget av asfalt på tykkelse på ca. 0,5 mm påført på et standardisert stålark sprekker eller krakker etter bøyning. Bestemmelsen utføres innen temperaturområdet +30 - -30°C ifølge polsk standard PN-73/C-04130 eller F.R.G, standard DIN 1995 U6. swept by asphalt to a thickness of approx. 0.5 mm applied to a standardized steel sheet cracks or cracks after bending. The determination is carried out within the temperature range +30 - -30°C according to Polish standard PN-73/C-04130 or F.R.G, standard DIN 1995 U6.
Eksemp_el_II Example_el_II
I 90 kg destillert asfalt som har en penetrering på In 90 kg of distilled asphalt which has a penetration of
101 m/10 ved en temperatur på 25°C, oppvarmet til en temperatur på 280°C, innføres 10 kg granulerte avfalls-dekk og blandingen blandes ved denne temperatur i 1J time. Blandingen som dannes oksyderes ved hjelp av luft ved en temperatur på 200°C i 28 timer. Asfalten har følgende egenskaper : 101 m/10 at a temperature of 25°C, heated to a temperature of 280°C, 10 kg of granulated waste tires are introduced and the mixture is mixed at this temperature for 1J hour. The resulting mixture is oxidized using air at a temperature of 200°C for 28 hours. The asphalt has the following properties:
Eksemgel_III Eczema gel_III
I 30 kg furfurolekstrakt som har en viskositet på 2,6°E ved en temperatur på 100°C, oppvarmet til en temperatur på 34 0°C, doseres 70 kg pulverisert dekk kontinuerlig ved samtidig blanding og blåsing med damp og oppvarming for å opprettholde en temperatur på 36 0°C. 91 kg av gummiavfalloppløsning og 9 kg olje med et kokepunkt 220-380°C dannes. 20 kg av gummiavfalloppløsningen blandes med 80 kg gateasfalt som har en penetrering på 16 mm/10 ved en temperatur på 25°C og homogeniseres deretter på en tannmølle. Produktet har følgende egenskaper: Into 30 kg of furfurol extract having a viscosity of 2.6°E at a temperature of 100°C, heated to a temperature of 34 0°C, 70 kg of powdered tire is dosed continuously by simultaneous mixing and blowing with steam and heating to maintain a temperature of 36 0°C. 91 kg of rubber waste solution and 9 kg of oil with a boiling point of 220-380°C are formed. 20 kg of the rubber waste solution is mixed with 80 kg of road asphalt which has a penetration of 16 mm/10 at a temperature of 25°C and then homogenized on a tooth mill. The product has the following properties:
Eksem£el_IV Example_IV
50 kg antracenolje og 50 kg forvulkanisert gummiavfall ble blandet sammen og blandingen ble oppvarmet i 15 timer ved en temperatur på 220°C. 80 kg av naturlig asfalt som har et mykningspunkt på 118°C og en penetrering tilsvarende 0 mm/10 ved en temperatur på 25°C blandes sammen med 20 kg av en gummiavfallblanding og antracenolje. 50 kg of anthracene oil and 50 kg of prevulcanized rubber waste were mixed together and the mixture was heated for 15 hours at a temperature of 220°C. 80 kg of natural asphalt which has a softening point of 118°C and a penetration corresponding to 0 mm/10 at a temperature of 25°C is mixed together with 20 kg of a rubber waste mixture and anthracene oil.
Det oppnås en asfalt som har et mykningspunkt på 77°C og en penetrering på 15 mm/10 ved en temperatur på 25°C. -^ An asphalt is obtained which has a softening point of 77°C and a penetration of 15 mm/10 at a temperature of 25°C. -^
Eksempel_V Example_V
90 kg asfaltresidu oksyderes ved hjelp av luft ved en temperatur på 260-320°C. Under oksydasjonsprosessen tildoseres por-sjonsvis 10 kg malt gummiavfall. 90 kg of asphalt residue is oxidized using air at a temperature of 260-320°C. During the oxidation process, 10 kg of ground rubber waste is dosed in portions.
Det oppnås en homogen asfaTfe som har et mykningspunkt ifølge ring-kulemetoden tilsvarende 53°C og penetrering tilsvarende 48 mm/10 ved en temperatur på 25°C så vel som en bruddtempe-ratur tilsvarende -16°C. A homogeneous asphaltene is obtained which has a softening point according to the ring-ball method corresponding to 53°C and penetration corresponding to 48 mm/10 at a temperature of 25°C as well as a breaking temperature corresponding to -16°C.
Claims (2)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL1975177416A PL101436B1 (en) | 1975-01-19 | 1975-01-19 | METHOD OF MAKING MODIFIED ROAD ASPHALT |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| NO760068L NO760068L (en) | 1976-07-20 |
| NO150282B true NO150282B (en) | 1984-06-12 |
| NO150282C NO150282C (en) | 1984-09-19 |
Family
ID=19970625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO760068A NO150282C (en) | 1975-01-19 | 1976-01-09 | PROCEDURE FOR THE PREPARATION OF ASPHALT MIXTURES, SPECIAL FOR THE PREPARATION OF STREET TIRE |
Country Status (21)
| Country | Link |
|---|---|
| JP (1) | JPS5840586B2 (en) |
| AT (1) | AT369418B (en) |
| BE (1) | BE837692A (en) |
| BR (1) | BR7600271A (en) |
| CA (1) | CA1052057A (en) |
| CS (1) | CS209484B2 (en) |
| DD (1) | DD123891A5 (en) |
| DE (1) | DE2601132C2 (en) |
| DK (1) | DK11776A (en) |
| FI (1) | FI66892C (en) |
| FR (1) | FR2297895A1 (en) |
| GB (1) | GB1539116A (en) |
| HU (1) | HU177847B (en) |
| IT (1) | IT1054797B (en) |
| LU (1) | LU74194A1 (en) |
| NL (1) | NL7600509A (en) |
| NO (1) | NO150282C (en) |
| PL (1) | PL101436B1 (en) |
| RO (1) | RO80997B (en) |
| SE (1) | SE429345B (en) |
| SU (1) | SU793407A3 (en) |
Families Citing this family (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ZA77721B (en) * | 1976-02-18 | 1978-09-27 | Mobil Oil Corp | Paving grade asphalt compositions |
| JPS58204205A (en) * | 1982-04-26 | 1983-11-28 | 東亜道路工業株式会社 | Regeneration and additive composition for pavement |
| JPS58201847A (en) * | 1982-04-26 | 1983-11-24 | Toa Doro Kogyo Kk | Regenerated additive composition for pavement |
| JPS58204203A (en) * | 1982-04-26 | 1983-11-28 | 東亜道路工業株式会社 | Regeneration and additive composition for pavement |
| DE3630132C2 (en) * | 1986-09-04 | 1999-12-16 | Haas Johannes | Process for the production of an elastic bituminous insulating and sealing compound |
| EP0364585A4 (en) * | 1988-04-28 | 1990-10-24 | Nauchno-Proizvodstvennoe Obiedinenie "Dorstroitekhnika" | Bitumen-rubber composition and method of obtaining it |
| FI911739A (en) * | 1991-04-11 | 1992-10-12 | Neste Oy | BINDEMEDEL FOER ASPHALT |
| US5270361A (en) * | 1992-02-25 | 1993-12-14 | Bitumar R. & D. (2768836 Canada Inc.) | Asphalt composition and process for obtaining same |
| DE9403628U1 (en) * | 1994-03-04 | 1994-05-19 | Bredemeyer Joerg | Asphalt road surface with plastic admixtures |
| CN1218074A (en) * | 1997-11-20 | 1999-06-02 | 波利法尔特有限公司 | Bituminous compositions prepared with process treated vulcanized rubbers |
| CN102071613B (en) * | 2011-01-26 | 2012-05-23 | 广东华盟路桥工程有限公司 | Asphalt-treated permeable-base (ATB) construction process |
| CN102190898B (en) * | 2011-03-22 | 2012-07-04 | 四川国星高分子树脂有限公司 | Preparation method of paving asphalt modified at normal temperature |
| RU2562496C2 (en) * | 2013-09-19 | 2015-09-10 | Общество с ограниченной ответственностью "Энгельсский завод изоляционных материалов" | Polymer-bitumen binder |
| RU2543217C1 (en) * | 2013-09-27 | 2015-02-27 | Открытое акционерное общество "Уфимский завод эластомерных материалов, изделий и конструкций" | Mastic composition and method of obtaining thereof |
| US10472487B2 (en) | 2015-12-30 | 2019-11-12 | Greenmantra Recycling Technologies Ltd. | Reactor for continuously treating polymeric material |
| EP4148090A1 (en) | 2016-02-13 | 2023-03-15 | GreenMantra Recycling Technologies Ltd | Polymer-modified asphalt with wax additive |
| BR112018068992B1 (en) | 2016-03-24 | 2023-01-31 | Greenmantra Recycling Technologies Ltd | METHOD FOR PRODUCING A MODIFIED POLYMER WITH AN IMPROVED FLOW INDEX FROM A DEPOLYMERIZED WAX |
| RU2630529C1 (en) * | 2016-05-26 | 2017-09-11 | Владимир Георгиевич Андриенко | Method for production of modified bituminous binders for road surfaces (versions) |
| WO2018058257A1 (en) | 2016-09-29 | 2018-04-05 | Greenmantra Recycling Technologies Ltd. | Reactor for treating polystyrene material |
| RU2656486C1 (en) * | 2017-09-22 | 2018-06-05 | Общество с ограниченной ответственностью "Энгельсский завод изоляционных материалов" | Method of producing insulation composition (versions) |
| CN109294610A (en) * | 2018-11-08 | 2019-02-01 | 攀钢集团攀枝花钢钒有限公司 | For the Production Process for Modified Pitch and device of high QI and high TI tar stock |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD7888A (en) * | ||||
| GB787873A (en) * | 1954-10-18 | 1957-12-18 | Us Rubber Co | Improvements in thermoplastic compositions |
| FR1120244A (en) * | 1955-01-21 | 1956-07-03 | Exxon Standard Sa | Process for dissolving synthetic rubber in bitumens |
| US3844668A (en) * | 1972-01-13 | 1974-10-29 | R Winters | Pavement composition |
| JPS4933916A (en) * | 1972-07-29 | 1974-03-28 |
-
1975
- 1975-01-19 PL PL1975177416A patent/PL101436B1/en unknown
- 1975-12-29 FI FI753663A patent/FI66892C/en not_active IP Right Cessation
-
1976
- 1976-01-09 NO NO760068A patent/NO150282C/en unknown
- 1976-01-12 SU SU762313353A patent/SU793407A3/en active
- 1976-01-13 DK DK11776*#A patent/DK11776A/en not_active Application Discontinuation
- 1976-01-14 DE DE2601132A patent/DE2601132C2/en not_active Expired
- 1976-01-15 SE SE7600378A patent/SE429345B/en not_active IP Right Cessation
- 1976-01-15 CS CS76269A patent/CS209484B2/en unknown
- 1976-01-16 LU LU74194A patent/LU74194A1/xx unknown
- 1976-01-16 IT IT19337/76A patent/IT1054797B/en active
- 1976-01-16 AT AT0027576A patent/AT369418B/en not_active IP Right Cessation
- 1976-01-16 BR BR7600271A patent/BR7600271A/en unknown
- 1976-01-16 DD DD190846A patent/DD123891A5/xx unknown
- 1976-01-16 HU HU76II233A patent/HU177847B/en unknown
- 1976-01-17 RO RO84533A patent/RO80997B/en unknown
- 1976-01-19 CA CA243,780A patent/CA1052057A/en not_active Expired
- 1976-01-19 GB GB406/76A patent/GB1539116A/en not_active Expired
- 1976-01-19 JP JP51004843A patent/JPS5840586B2/en not_active Expired
- 1976-01-19 NL NL7600509A patent/NL7600509A/en not_active Application Discontinuation
- 1976-01-19 BE BE163615A patent/BE837692A/en not_active IP Right Cessation
- 1976-01-19 FR FR7601248A patent/FR2297895A1/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| AT369418B (en) | 1982-12-27 |
| LU74194A1 (en) | 1976-05-18 |
| JPS5840586B2 (en) | 1983-09-06 |
| NO760068L (en) | 1976-07-20 |
| NO150282C (en) | 1984-09-19 |
| CS209484B2 (en) | 1981-12-31 |
| CA1052057A (en) | 1979-04-10 |
| FI753663A (en) | 1976-07-20 |
| IT1054797B (en) | 1981-11-30 |
| ATA27576A (en) | 1982-05-15 |
| PL101436B1 (en) | 1978-12-30 |
| DK11776A (en) | 1976-07-20 |
| DD123891A5 (en) | 1977-01-19 |
| BE837692A (en) | 1976-05-14 |
| BR7600271A (en) | 1976-08-31 |
| RO80997B (en) | 1984-08-30 |
| FI66892C (en) | 1984-12-10 |
| DE2601132A1 (en) | 1976-07-22 |
| JPS51125412A (en) | 1976-11-01 |
| FR2297895B1 (en) | 1979-07-06 |
| SE7600378L (en) | 1976-07-20 |
| SU793407A3 (en) | 1980-12-30 |
| DE2601132C2 (en) | 1982-03-25 |
| FI66892B (en) | 1984-08-31 |
| HU177847B (en) | 1981-12-28 |
| FR2297895A1 (en) | 1976-08-13 |
| GB1539116A (en) | 1979-01-24 |
| SE429345B (en) | 1983-08-29 |
| RO80997A (en) | 1984-06-21 |
| NL7600509A (en) | 1976-07-21 |
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