NO761859L - - Google Patents
Info
- Publication number
- NO761859L NO761859L NO761859A NO761859A NO761859L NO 761859 L NO761859 L NO 761859L NO 761859 A NO761859 A NO 761859A NO 761859 A NO761859 A NO 761859A NO 761859 L NO761859 L NO 761859L
- Authority
- NO
- Norway
- Prior art keywords
- polyethylene
- ethylene
- weight
- mooney viscosity
- mixture
- Prior art date
Links
- -1 Polyethylene Polymers 0.000 claims description 22
- 239000004698 Polyethylene Substances 0.000 claims description 21
- 229920000573 polyethylene Polymers 0.000 claims description 21
- 229920001577 copolymer Polymers 0.000 claims description 14
- 229920000642 polymer Polymers 0.000 claims description 12
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 3
- 239000005977 Ethylene Substances 0.000 claims description 3
- 239000000155 melt Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 description 14
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920002367 Polyisobutene Polymers 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 229920005549 butyl rubber Polymers 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000012967 coordination catalyst Substances 0.000 description 1
- 150000001993 dienes Chemical class 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 229920001897 terpolymer Polymers 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Organic Insulating Materials (AREA)
Description
Polyethylenpolymere med høy bruddfasthet Polyethylene polymers with high breaking strength
Foreliggende oppfinnelse angår polymere på polyethylen-basis, med høy bruddfasthet, oppnådd ved å tilsette ethylenpropylen-copolymere til polyethylenet. The present invention relates to polymers on a polyethylene basis, with high breaking strength, obtained by adding ethylene-propylene copolymers to the polyethylene.
For mange formål, som f.eks. overtrekk på kabler, elek-triske ledninger og rørledninger, for fremstilling av beholdere og husholdningsgjenstander kreves en polyethylentype med høy aldrings-motstand, stor varmefasthet og høy bruddfasthet under mekaniske på-kjenninger. Samtidig må slikt materiale være lett bearbeidbart. For many purposes, such as covering of cables, electric wires and pipelines, for the manufacture of containers and household items, a polyethylene type with high aging resistance, great heat resistance and high breaking strength under mechanical stress is required. At the same time, such material must be easily processed.
Tidligere har man forsøkt å øke den dårlige bruddfasthet. for polyethylenet som sådant ved å tilsette forskjellige stof-- - fer som butylgummi, polyisobutylen, ataktisk polypropylen, ethylen-vinylacetat copolymere, imidlertid med dårlige resultater med hen-syn til bearbeidbarheten av de fremstillede blandinger, stabilite-ten eller sprøheten ved høy eller lav temperatur. In the past, attempts have been made to increase the poor fracture toughness. for the polyethylene as such by adding different substances such as butyl rubber, polyisobutylene, atactic polypropylene, ethylene-vinyl acetate copolymers, however with poor results in terms of the workability of the prepared mixtures, the stability or brittleness at high or low temperature.
Nylig er der i canadisk patenter 789.074 og 792.277 foreslått å benytte ethylen/propylen/ukonjugert dien-terpolymere som tilsetning til polyethylen. Recently, in Canadian patents 789,074 and 792,277, it has been proposed to use ethylene/propylene/unconjugated diene terpolymers as an additive to polyethylene.
Foreliggende ansøker har nu funnet at man. kan forbedre bruddfastheten for polyethylen ved å tilsette fra 5 til 50. vekt% av totalvekten binær amorf ethylen/propylen-copolymere med en Mooney viskositet målt ved 100°C på 50 til 300. The present applicant has now found that man. can improve the breaking strength of polyethylene by adding from 5 to 50% by weight of the total weight of binary amorphous ethylene/propylene copolymers with a Mooney viscosity measured at 100°C of 50 to 300.
Slike polymersammensetninger har ved siden av høy .bruddfasthet en god bearbeidbarhet og beholder polyethylenets ho-vedegenskaper i det vesentlige uforandret. Such polymer compositions have, in addition to high fracture strength, good workability and keep polyethylene's main properties essentially unchanged.
Man har også iakttatt at jo høyere Mooney viskositeten for den copolymere er, desto større er blandingens bruddfasthet. It has also been observed that the higher the Mooney viscosity of the copolymer, the greater the fracture toughness of the mixture.
Bruk av polymere med Mooney viskositet på over 300 ved 100°C er imidlertid ikke hensiktsmessig på grunn av vanskeligheter med blanding med polyethylenet. However, the use of polymers with a Mooney viscosity of over 300 at 100°C is not appropriate due to difficulties in mixing with the polyethylene.
Copolymere med Mooney viskositet lavere enn 50 vil ik-ke i vesentlig grad forbedre bruddfastheten. Fortrinsvis benyttes copolymere med Mooney viskositet ved 100°C på 70 til 150. Copolymers with a Mooney viscosity lower than 50 will not significantly improve the fracture toughness. Copolymers with a Mooney viscosity at 100°C of 70 to 150 are preferably used.
Ifølge foreliggende oppfinnelse tilveiebringes således polymersammensetninger med høy bruddfasthet i uvulkanisert tilstand, inneholdende fra 9 5 til 50 vekt% poiyethylene og fra 5 til 50 vekt% binær ethylen/propylen copolymer med Mooney viskositet ved 100°C på 50 til '300. According to the present invention, polymer compositions with high breaking strength in the unvulcanized state are thus provided, containing from 95 to 50% by weight of polyethylene and from 5 to 50% by weight of binary ethylene/propylene copolymer with a Mooney viscosity at 100°C of 50 to 300.
Polyethylenet som benyttes til sammensetningen ifølge oppfinnelsen kan være lineær eller forgrenet, med høy eller lav egenvekt (LD eller HD). Fortrinsvis brukes et polyethylen med smelteindeks mellom 0,15 og 0,30. The polyethylene used for the composition according to the invention can be linear or branched, with high or low specific gravity (LD or HD). A polyethylene with a melt index between 0.15 and 0.30 is preferably used.
Som amorfe ethylen-propylen copolymere kan man i foreliggende forbindelse bruke polymere med ethyleninnhold mellom 20 og 80 vekt%. As amorphous ethylene-propylene copolymers, polymers with an ethylene content between 20 and 80% by weight can be used in the present connection.
Slike copolymere fremstilles ved hjelp av coordina-sjonskatalysatorer eller med katalysatorer som består av metalloxy-der på underlag i henhold til fremgangsmåter som er godt beskrevet i litteraturen. Such copolymers are produced using coordination catalysts or with catalysts consisting of metal oxides on a substrate according to methods that are well described in the literature.
Polymerene ifølge oppfinnelsen kan fremstilles ved å tilsette til polyethylenet, i en banbury blander eller vanlig blan-demaskin, den nevnte binære blanding ved en temperatur som avhenger av det anvendte polyethylen, men vanligvis ligger mellom 200 og 250°C. The polymers according to the invention can be produced by adding to the polyethylene, in a Banbury mixer or ordinary mixing machine, the aforementioned binary mixture at a temperature which depends on the polyethylene used, but usually lies between 200 and 250°C.
Fyllstoffer, oxydasjonsinhibitorer, farvestoffer, sot-svart, silicon og andre bestanddeler som er kjent på området kan tilsettes blandingene i en mengde som fortrinsvis ikke overstiger 4 vekt%. Fillers, oxidation inhibitors, dyes, carbon black, silicon and other ingredients known in the field can be added to the mixtures in an amount which preferably does not exceed 4% by weight.
Polymerene ifølge oppfinnelsen kan brukes for fremstilling av belegg på kabler, rørledninger, filmer, beholdere og for støpte gjenstander generelt. The polymers according to the invention can be used for the production of coatings on cables, pipelines, films, containers and for cast objects in general.
Oppfinnelsen skal beskrives ytterligere ved de følgen-de illustrerende eksempler. The invention shall be described further by the following illustrative examples.
h h
Eksempel 1Example 1
Man fremstillet' en blanding inneholdende 50 vekt% polyethylen med spesifikk vekt = 0,918 og smelteindeks =0,15, og 50 vekt% ethylen-propylen-copolymer inneholdende 55 vekt% copolymeri-sert ethylen, og med Mooney viskositet ved 100°C = 95. Blandingen ble fremstillet ved å sammenblande de to bestanddeler i en Banbury blander ved temperatur mellom 240 og 250°C i nærvær av 0,1 % A mixture was prepared containing 50% by weight polyethylene with specific weight = 0.918 and melt index = 0.15, and 50% by weight ethylene-propylene copolymer containing 55% by weight copolymerized ethylene, and with Mooney viscosity at 100°C = 95 The mixture was prepared by mixing the two components in a Banbury mixer at a temperature between 240 and 250°C in the presence of 0.1%
'JjSantonoxR" (antioxydasjonsmiddel) .'JjSantonoxR" (antioxidant) .
Blandingen ble ekstrudert og granulert, og granulatet blandet med mere av samme polyethylen under ovenstående forhold til man fikk en sluttblanding som inneholdt 10 vekt% ethylen-propylen-copolymer... The mixture was extruded and granulated, and the granulate mixed with more of the same polyethylene under the above conditions until a final mixture containing 10% by weight of ethylene-propylene copolymer...
Som et mål på den spesielle bruddfasthet som man her sø-ker, målte man på prøver av blandingen i henhold til ASTM D 1693 en verdi på over 2000 timer. Polyethylenet i blandingen hadde i seg selv en bruddfasthet på 100 timer. As a measure of the special breaking strength that is sought here, a value of over 2000 hours was measured on samples of the mixture in accordance with ASTM D 1693. The polyethylene in the mixture itself had a breaking strength of 100 hours.
Eksempel 2 Example 2
Ved hjelp av en fremgangsmåte som i eksempel 1 fremstillet man en blanding av 70 vekt% polyethylen og 30 vekt% ethylen/ propylen-copolymer, av samme type som i eksempel 1. Man fikk brudd-fast-verdier, målt som i eksempel 1, på over 5000 timer. Using a method as in example 1, a mixture of 70% by weight polyethylene and 30% by weight ethylene/propylene copolymer, of the same type as in example 1, was produced. Breaking strength values were obtained, measured as in example 1, of over 5,000 hours.
Claims (4)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT24105/75A IT1038758B (en) | 1975-06-06 | 1975-06-06 | COMPOSITIONS OF POLYETHYELENE WITH HIGH RESISTANCE TO STRESS CRAKING |
Publications (1)
Publication Number | Publication Date |
---|---|
NO761859L true NO761859L (en) | 1976-12-07 |
Family
ID=11211998
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO761859A NO761859L (en) | 1975-06-06 | 1976-06-01 |
Country Status (11)
Country | Link |
---|---|
JP (1) | JPS51149346A (en) |
AT (1) | AT350253B (en) |
BE (1) | BE842616A (en) |
DE (1) | DE2625331A1 (en) |
DK (1) | DK240176A (en) |
ES (1) | ES448606A1 (en) |
FR (1) | FR2313424A1 (en) |
IT (1) | IT1038758B (en) |
NL (1) | NL7605896A (en) |
NO (1) | NO761859L (en) |
SE (1) | SE7606190L (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0014539A3 (en) * | 1979-02-07 | 1980-09-03 | Exxon Research And Engineering Company | Controlled tackiness in epm/ldpe blends |
JPS5692937A (en) * | 1979-12-26 | 1981-07-28 | Nippon Oil Co Ltd | Resin composition for molding polyethylene film |
FR2493854B1 (en) * | 1980-11-13 | 1985-10-11 | Naphtachimie Sa | IMPROVED POLYETHYLENE COMPOSITIONS FOR EXTRUSION IN PARTICULAR FOR EXTRUSION-BLOWING |
US4931348A (en) * | 1987-08-31 | 1990-06-05 | International Business Machines Corporation | Reduced thickness resin substrate in film printing ribbon |
WO2006065300A1 (en) | 2004-12-16 | 2006-06-22 | Exxonmobil Chemical Patents Inc. | Polymeric compositions including their uses and methods of production |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL278595A (en) * | 1961-05-18 | |||
FR1367023A (en) * | 1962-06-25 | 1964-07-17 | Monsanto Chemicals | Production of ethylene polymers resistant to stress cracking |
GB1084284A (en) * | 1964-05-28 | |||
SE345926B (en) * | 1967-10-02 | 1972-06-12 | Union Carbide Corp |
-
1975
- 1975-06-06 IT IT24105/75A patent/IT1038758B/en active
-
1976
- 1976-06-01 DK DK240176A patent/DK240176A/en not_active Application Discontinuation
- 1976-06-01 NL NL7605896A patent/NL7605896A/en not_active Application Discontinuation
- 1976-06-01 NO NO761859A patent/NO761859L/no unknown
- 1976-06-01 SE SE7606190A patent/SE7606190L/en unknown
- 1976-06-02 FR FR7616695A patent/FR2313424A1/en active Granted
- 1976-06-03 AT AT409176A patent/AT350253B/en not_active IP Right Cessation
- 1976-06-04 BE BE167643A patent/BE842616A/en not_active IP Right Cessation
- 1976-06-04 DE DE19762625331 patent/DE2625331A1/en not_active Withdrawn
- 1976-06-05 ES ES448606A patent/ES448606A1/en not_active Expired
- 1976-06-05 JP JP51065167A patent/JPS51149346A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
IT1038758B (en) | 1979-11-30 |
SE7606190L (en) | 1976-12-07 |
ES448606A1 (en) | 1978-04-01 |
ATA409176A (en) | 1978-10-15 |
DK240176A (en) | 1976-12-07 |
DE2625331A1 (en) | 1976-12-16 |
NL7605896A (en) | 1976-12-08 |
FR2313424A1 (en) | 1976-12-31 |
AT350253B (en) | 1979-05-25 |
BE842616A (en) | 1976-12-06 |
JPS51149346A (en) | 1976-12-22 |
FR2313424B1 (en) | 1978-11-17 |
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