NO792197L - PROCEDURE FOR PREPARING A POLYPROPYLENE PREPARATION - Google Patents
PROCEDURE FOR PREPARING A POLYPROPYLENE PREPARATIONInfo
- Publication number
- NO792197L NO792197L NO792197A NO792197A NO792197L NO 792197 L NO792197 L NO 792197L NO 792197 A NO792197 A NO 792197A NO 792197 A NO792197 A NO 792197A NO 792197 L NO792197 L NO 792197L
- Authority
- NO
- Norway
- Prior art keywords
- polypropylene
- mfi
- rubber
- weight
- mixture
- Prior art date
Links
- -1 POLYPROPYLENE Polymers 0.000 title claims description 48
- 239000004743 Polypropylene Substances 0.000 title claims description 33
- 229920001155 polypropylene Polymers 0.000 title claims description 31
- 238000000034 method Methods 0.000 title claims description 13
- 239000000203 mixture Substances 0.000 claims description 32
- 229920001971 elastomer Polymers 0.000 claims description 24
- 150000001875 compounds Chemical class 0.000 claims description 23
- 239000004698 Polyethylene Substances 0.000 claims description 17
- 229920000573 polyethylene Polymers 0.000 claims description 17
- 229920000642 polymer Polymers 0.000 claims description 17
- 238000000465 moulding Methods 0.000 claims description 16
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 15
- 239000005977 Ethylene Substances 0.000 claims description 15
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 9
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims description 6
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 claims description 5
- 238000005469 granulation Methods 0.000 claims description 2
- 230000003179 granulation Effects 0.000 claims description 2
- 239000008187 granular material Substances 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 description 3
- 229920001577 copolymer Polymers 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- 239000000178 monomer Substances 0.000 description 3
- LIKMAJRDDDTEIG-UHFFFAOYSA-N 1-hexene Chemical compound CCCCC=C LIKMAJRDDDTEIG-UHFFFAOYSA-N 0.000 description 2
- 125000004432 carbon atom Chemical group C* 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000009757 thermoplastic moulding Methods 0.000 description 2
- PRBHEGAFLDMLAL-GQCTYLIASA-N (4e)-hexa-1,4-diene Chemical compound C\C=C\CC=C PRBHEGAFLDMLAL-GQCTYLIASA-N 0.000 description 1
- HECLRDQVFMWTQS-RGOKHQFPSA-N 1755-01-7 Chemical compound C1[C@H]2[C@@H]3CC=C[C@@H]3[C@@H]1C=C2 HECLRDQVFMWTQS-RGOKHQFPSA-N 0.000 description 1
- YKZUNWLMLRCVCW-UHFFFAOYSA-N 4-[2-(4-bicyclo[2.2.1]hept-2-enyl)ethyl]bicyclo[2.2.1]hept-2-ene Chemical group C1CC(C2)C=CC21CCC1(C=C2)CC2CC1 YKZUNWLMLRCVCW-UHFFFAOYSA-N 0.000 description 1
- FKLJPTJMIBLJAV-UHFFFAOYSA-N Compound IV Chemical compound O1N=C(C)C=C1CCCCCCCOC1=CC=C(C=2OCCN=2)C=C1 FKLJPTJMIBLJAV-UHFFFAOYSA-N 0.000 description 1
- 239000004594 Masterbatch (MB) Substances 0.000 description 1
- 229920002367 Polyisobutene Polymers 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- IAQRGUVFOMOMEM-UHFFFAOYSA-N butene Natural products CC=CC IAQRGUVFOMOMEM-UHFFFAOYSA-N 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- NLFBCYMMUAKCPC-KQQUZDAGSA-N ethyl (e)-3-[3-amino-2-cyano-1-[(e)-3-ethoxy-3-oxoprop-1-enyl]sulfanyl-3-oxoprop-1-enyl]sulfanylprop-2-enoate Chemical compound CCOC(=O)\C=C\SC(=C(C#N)C(N)=O)S\C=C\C(=O)OCC NLFBCYMMUAKCPC-KQQUZDAGSA-N 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- YWAKXRMUMFPDSH-UHFFFAOYSA-N pentene Chemical compound CCCC=C YWAKXRMUMFPDSH-UHFFFAOYSA-N 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920002959 polymer blend Polymers 0.000 description 1
- 229920001384 propylene homopolymer Polymers 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000003381 stabilizer 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
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
-
- 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
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/14—Copolymers of propene
- C08L23/142—Copolymers of propene at least partially crystalline copolymers of propene with other olefins
-
- 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
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0807—Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms
- C08L23/0815—Copolymers of ethene with aliphatic 1-olefins
-
- 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)
- Crystallography & Structural Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Description
Fremgangsmåte til fremstilling av en polypropylen-formmasse. Method for producing a polypropylene molding compound.
Oppfinnelsen vedrører en fremgangsmåte til frem-The invention relates to a method for
stilling av en termoplastisk formmasse på basis av polypropylen og et kautsjuklignende etylen-propylen-blandingspolymerisat pluss polyetylen. position of a thermoplastic molding compound based on polypropylene and a rubber-like ethylene-propylene mixture polymer plus polyethylene.
Polypropylen har ved siden av noen meget gunstige egenskaper som eksempelvis en relativt lav tetthet, en utmerket bestandighet overfor høyere temperaturer og vandige og ikke- Polypropylene also has some very favorable properties such as a relatively low density, an excellent resistance to higher temperatures and aqueous and non-
vandige væsker og også mindre gunstige egenskaper, hvortil det hører den manglende slagfasthet ved temperaturer under værelsetemperatur, spesielt under 0°C. Tilstrekkelig slagfasthet er spesielt viktig for transportkasser, kofferter, automobildeler og lignende anvendelser. Polyetylen av høy tetthet, hvorav man vanligvis fremstiller slike formdeler har riktignok en god slagfasthet, viser imidlertid en mindre bestandighet mot høye temperaturer og en utilstrekkelig fasthet mot rissdannelse. 1 aqueous liquids and also less favorable properties, which include the lack of impact resistance at temperatures below room temperature, especially below 0°C. Sufficient impact resistance is particularly important for transport boxes, suitcases, automotive parts and similar applications. High-density polyethylene, from which such shaped parts are usually made, has a good impact resistance, however, shows less resistance to high temperatures and insufficient resistance to cracking. 1
Det er kjent å anvende blandinger av polypropylen og polyetylen. Det har imidlertid vist seg at blandinger av disse polymere har en knapt forbedret slagfasthet sammenlignet med polypropylen. Dessuten tenderer formlegemer fremstilt av slike blandinger til allerede ved liten gjennombøyning å bli ugjennomsiktige og matte. It is known to use mixtures of polypropylene and polyethylene. However, it has been found that mixtures of these polymers have a barely improved impact resistance compared to polypropylene. In addition, molded bodies made from such mixtures tend to become opaque and dull even with a slight deflection.
Videre har man sammenblandet polypropylen for forbed-Furthermore, polypropylene has been mixed together for
ring av slagfastheten ved temperaturer under værelsetemperatur med amorfe kopolymere av etylen og propylen, men også med andre kauts juklignende polymere, f. eks. polyisobutylen.. Imidlertid er strekkfastheten og stivheten av slike blandinger ikke tilstrekkelig. ring of the impact strength at temperatures below room temperature with amorphous copolymers of ethylene and propylene, but also with other rubber-like polymers, e.g. polyisobutylene.. However, the tensile strength and stiffness of such mixtures are not sufficient.
Videre er det kjent å blande polypropylen med poly-Furthermore, it is known to mix polypropylene with poly-
etylen og en kautsjuklignende komponent (sml. britisk patent 1.154.44 7, 1.065.566 og US-patent 3.256.367). Slike ternære blandinger viser ethylene and a rubber-like component (cf. British patent 1,154,447, 1,065,566 and US patent 3,256,367). Such ternary mixtures show
i forhold til binære blandinger bedre egenskaper. De kan fremstilles ved hjelp av kjente metoder, eksempelvis ved samtidig knaing av komponentene i toakselknaere på valseverker og i ekstrudere. Derved anvendes også den såkalte "Masterbatch-teknikk", dvs. de compared to binary mixtures better properties. They can be produced using known methods, for example by simultaneous kneading of the components in two-axis kneaders on rolling mills and in extruders. Thereby, the so-called "Masterbatch technique" is also used, i.e. they
to i mindre deler i formmassen tilstedeværende polymere, polyetylen og kautsjukaktige komponenter, blandes først homogent for seg og sammenblandes deretter med den foreskrevne mengde polypropylen (sml. USpatent nr. 3.256.367). two polymeric, polyethylene and rubber-like components present in the molding compound in smaller parts, are first mixed homogeneously separately and then combined with the prescribed amount of polypropylene (cf. US patent no. 3,256,367).
Det er også kjent en fremgangsmåte, hvor det fremstilles en oppløsning av en polymerblanding og deretter fjernes oppløsningsmidlet ved en hurtigfordampning.(sml. DOS 2.152.746). Ved denne fremgangsmåte er imidlertid mengden for oppløsnings-midlet meget betraktelig og følgelig ikke egnet for en storteknisk anvendelse. A method is also known, where a solution of a polymer mixture is prepared and then the solvent is removed by rapid evaporation (cf. DOS 2,152,746). In this method, however, the quantity of the solvent is very considerable and consequently not suitable for a large-scale technical application.
Fremstillingen av slike slagfaste termoplastiske formmasser på basis av polypropylen ved polymerisasjon, strander på The production of such impact-resistant thermoplastic molding compounds on the basis of polypropylene by polymerisation, continues
at derved oppstår ofte meget høye mengder av oppløselig polymer, hvorved det opptrer et monomertap. that this often results in very high amounts of soluble polymer, whereby a loss of monomer occurs.
Ehnulempe ved de hittil kjente fremgangsmåter til fremstilling av ternære, slagfaste polypropylen-formmasser består i at optimale slagfaste formmasser bare oppnås tilfeldig eller med stort forsøksarbeide. A disadvantage of the hitherto known methods for the production of ternary, impact-resistant polypropylene molding compounds is that optimal impact-resistant molding compounds are only achieved by chance or with extensive trial work.
Det er nu funnet at man med enkle midler kan oppnå optimalt slagfaste, ternære polypropylen-formmasser når man over-holder et bestemt forhold av smelteindeksen av polypropylenet til polyetylenets kautsjuklignende material-blanding. It has now been found that with simple means it is possible to obtain optimally impact-resistant, ternary polypropylene molding compounds when a certain ratio of the melt index of the polypropylene to the polyethylene's rubber-like material mixture is observed.
Oppfinnelsens gjenstand er således fremgangsmåten angitt i kravene. The object of the invention is thus the method specified in the claims.
I henhold til fremgangsmåten ifølge oppfinnelsen blandes i første rekke en polyetylen og et kautsjuklignende materiale med hverandre og den dannede blanding sammenblandes med en egnet polypropylen. According to the method according to the invention, a polyethylene and a rubber-like material are first mixed with each other and the resulting mixture is mixed with a suitable polypropylene.
Egnet som polyetylen er etylenhomopolymerisater og kopolymerisater med inntil 10 vekt% av et 1-olefin med 3-6 karbonatomer, eksempelvis propylen, buten-1, penten-1, hexen-1. Suitable as polyethylene are ethylene homopolymers and copolymers with up to 10% by weight of a 1-olefin with 3-6 carbon atoms, for example propylene, butene-1, pentene-1, hexene-1.
Tettheten av disse polymere utgjør 0,91 til 0,97 g/cm3 og smelteindeksen MFI (190/5) 0,1 til 20, fortrinnsvis 0,1 til 10 g/10 min. The density of these polymers is 0.91 to 0.97 g/cm 3 and the melt index MFI (190/5) 0.1 to 20, preferably 0.1 to 10 g/10 min.
Det kautsjuklignende materiale er en statistisk blandingspolymerisat av 30 til 80 vekt% etylen og 2 0 til 70 vekt% propylen, fortrinnsvis 4 0 til 65 vekt% etylen og 35 til 6 0 vekt% propylen. Inntil 10 vekt% referert til den samlede mengde av monomere, av en eller flere andre komonomere som minst inneholder to ikke-konjugerte C-C-bindinger, kan være innpolymerisert. Eksempler for sistnevnte monomere er etylennorbonen, dicyklopenta-dien, 1,4-hexadien. The rubber-like material is a statistical mixture polymer of 30 to 80% by weight ethylene and 20 to 70% by weight propylene, preferably 40 to 65% by weight ethylene and 35 to 60% by weight propylene. Up to 10% by weight, referred to the total amount of monomers, of one or more other comonomers containing at least two non-conjugated C-C bonds, may be polymerized. Examples of the latter monomers are ethylenenorbone, dicyclopentadiene, 1,4-hexadiene.
Tettheten av disse blandingspolymerisater utgjør 0,85 til 0,89 g/cm<3>MFI (230/5) 0,05 til 10, fortrinnsvis 0,1 til 6 The density of these mixed polymers is 0.85 to 0.89 g/cm<3>MFI (230/5) 0.05 to 10, preferably 0.1 to 6
g/10 min.g/10 min.
For fremgangsmåten egner det seg propylenhomopolymeri-sater og kopolymerisater med inntil 15 vekt% av et 1-olefin med 2 til 6 karbonatomer, eksempelvis etylen, buten, hexen. Propylene homopolymers and copolymers with up to 15% by weight of a 1-olefin with 2 to 6 carbon atoms, for example ethylene, butene, hexene, are suitable for the method.
Disse polymere har en tetthet fra 0,89 til 0,92 g/cm<3>og en MFI (230/5) fra 0,5 til 25, fortrinnsvis 0,5 til 15 g/10 min. These polymers have a density of 0.89 to 0.92 g/cm<3> and an MFI (230/5) of 0.5 to 25, preferably 0.5 to 15 g/10 min.
For fremstilling av blandingen.av polyetylen og kaut-sjukmaterialet egner det seg alle knaere, valseverk og lignende som er istand til å finfordele de to komponenter og å fordele dem i hverandre. Slike knaere er eksempelvis såkalte indre-blandere, slik de anvendes i gummiindustrien. Disse maskiner består av et oppvarmbart mantelhus, hvori spesielt formede skovler dreier seg mot hverandre, idet fyllsjakten lukkes ved hjelp av et trykkstempel. Et ytterligere eksempel er toakselknaere, som er lignende ekstrudere og likeledes består av et oppvarmbartmantelhus, hvori skovlene dreier seg mot hverandre, gjennomknar materialet og befordrer det fra fyllsjakten til uttak. Egnede blandingsmaskiner er eksempelvis også de i gummiindustrien og i den ;PVC-f orarbeidende industri anvendte tovalseverk, hvori to oppvarmede valser dreier seg mot hverandre med forskjellig hastighet og plastifiserer og homogeni-serer de ifylte materialer i valsespalten. For the production of the mixture of polyethylene and the rubber material, all kneaders, rolling mills and the like are suitable which are able to finely distribute the two components and to distribute them among each other. Such kneaders are, for example, so-called internal mixers, as they are used in the rubber industry. These machines consist of a heatable casing, in which specially shaped vanes rotate against each other, the filling chute being closed by means of a pressure piston. A further example is twin-axle kneaders, which are similar to extruders and likewise consist of a heatable jacket housing, in which the blades turn against each other, knead the material and convey it from the filling chute to the outlet. Suitable mixing machines are also, for example, those used in the rubber industry and in the PVC processing industry, two-roll mills, in which two heated rollers turn towards each other at different speeds and plasticize and homogenize the filled materials in the roller gap.
Blandingen og homogeniseringen foregår ved en temperatur som er avhengig av den valgte maskintype, vanligvis ligger imidlertid i området fra 150 til 280, fortrinnsvis 17 0 til 24 0°C. Blandetiden er avhengig av maskinen og utgjør 0,5 til 15 min., fortrinnsvis 1 til 10 min. The mixing and homogenization takes place at a temperature which depends on the type of machine chosen, but usually lies in the range from 150 to 280, preferably 170 to 240°C. The mixing time depends on the machine and amounts to 0.5 to 15 min., preferably 1 to 10 min.
Blandingsforholdet mellom polyetylen og kautsjukkompo-nenter utgjør 6:1 til 0,3:1, fortrinnsvis 4:1 til 0,5:1 (vektdeler). The mixing ratio between polyethylene and rubber components amounts to 6:1 to 0.3:1, preferably 4:1 to 0.5:1 (parts by weight).
På den dannede kautsjukblanding måles smelteindeksen MFI (230/5)-KM. Den ligger i området på 0,05 til 10, fortrinnsvis på 0,1 til 6 g/10 min. Tilsvarende den funne verdi velges en poly propylen således at dets MFI-(230/5)-PP til MFI-KM står i følgende . forhold: The melt index MFI (230/5)-KM is measured on the formed rubber mixture. It lies in the range of 0.05 to 10, preferably of 0.1 to 6 g/10 min. Corresponding to the value found, a polypropylene is selected so that its MFI-(230/5)-PP to MFI-KM is as follows. relationship:
fortrinnsvis 3 til 8. preferably 3 to 8.
Selvsagt er det også mulig å velge den omvendte rekkefølge og til et gitt polypropylen å velge en egnet kautsjukblanding. Hertil kreves det bare noen mindre forsøk for å få den ønskede MFI (2 30/5)-KM. Of course, it is also possible to choose the reverse order and for a given polypropylene to choose a suitable rubber mixture. For this, only a few minor attempts are required to obtain the desired MFI (2 30/5)-KM.
Polypropylen og kautsjukblanding blandes i forhold 1,5-9 : 1, fortrinnsvis 2-8:1, under tilsetning av det vanlige stabilisatorer, antioksidanter, pigmenter, fyllstoffer, glide-midler etc. og granuleres. For blandingen er det egnet de vanlige blandere, den granuleres på en av de kjente granulerings-ekstrudere som for det meste danner dobbeltsnekkepresse med blande-og knasoner. Polypropylene and rubber compound are mixed in a ratio of 1.5-9:1, preferably 2-8:1, with the addition of the usual stabilizers, antioxidants, pigments, fillers, lubricants etc. and granulated. For the mixture, the usual mixers are suitable, it is granulated on one of the known granulation extruders which mostly form a double screw press with mixing and knapping zones.
Den på denne måte fremstilte polyprppylen-formmasse består av 90 til 60, fortrinnsvis 80 til 70 vekt% polypropylen, 4 til 30, fortrinnsvis 6 til 24 vekt% polyetylen og 6 til 30, fortrinnsvis 6 til 24 vekt% av det kautsjukaktige blandingspolymerisat av etylen og propylen, som eventuelt kan inneholde en eller flere ytterligere komonomere. De polymere er definert videre ovenfor. The polypropylene molding compound produced in this way consists of 90 to 60, preferably 80 to 70% by weight of polypropylene, 4 to 30, preferably 6 to 24% by weight of polyethylene and 6 to 30, preferably 6 to 24% by weight of the rubbery mixed polymer of ethylene and propylene, which may optionally contain one or more additional comonomers. The polymers are defined further above.
Den ifølge oppfinnelsen fremstilte polypropylen-formmasse utmerker seg ved en meget god slagfasthet ved temperaturer under værelsetemperatur, spesielt under 0°C. The polypropylene molding compound produced according to the invention is distinguished by a very good impact resistance at temperatures below room temperature, especially below 0°C.
For undersøkelse av formmassene anvendes følgende metoder: The following methods are used for examination of the molding compounds:
Eksempel 1 med sammenligningseksempel A Example 1 with comparative example A
I en toakselknaer (dobbeltsnekkepresse) med en snekkediameter D på 35 mm, en snekkelengde L på 17 D og en på sylinderomkretsen anordnet blandedel, blandes ved en sylinder-temperatur på 23 0°C to deler av et etylen-propylen-blandingspolymerisat bestående av 44 vekt% etylen-enheter og 56 vekt% propylenenheter, med en RSV-verdi på 3,03 dl/g og en MFI (2 30/5) på 1,3 g/ 10 min., med en del av et polyetylen med-en tetthet på 0,947 g/cm<3>og en MFI (190/5) på 1,6 g/lo min. og overfører i et strenggranulat. Man får kautsjukblåndingen I, som har en MFI (230/5) på 2,2 g/10 min. In a two-axis kneader (double screw press) with a screw diameter D of 35 mm, a screw length L of 17 D and a mixing part arranged on the cylinder circumference, two parts of an ethylene-propylene mixture polymer consisting of 44 are mixed at a cylinder temperature of 23 0°C wt% ethylene units and 56 wt% propylene units, with an RSV value of 3.03 dl/g and an MFI (2 30/5) of 1.3 g/10 min., with part of a polyethylene with a density of 0.947 g/cm<3> and an MFI (190/5) of 1.6 g/lo min. and transfers in a string granule. You get the rubber compound I, which has an MFI (230/5) of 2.2 g/10 min.
På I samme måte får man kautsjukblandingen II for sammen-ligningsforsøk A av 2 deler .av et etylen-propylen-blandingspolymerisat, bestående av 41 vekt% etylenenheter og 59 vekt% propylenenheter, med en MFI (230/5) på 0,45 g/10 min. og 1 del av ovennevnte polyetylen. Blandingens MFI (230/5) er 0,4 g/10 min. Hver gang 80 deler av et polypropylen med tetthet 0,906 g/cm 3 og en MFI In the same way, the rubber mixture II for comparative test A is obtained from 2 parts of an ethylene-propylene mixture polymer, consisting of 41% by weight ethylene units and 59% by weight propylene units, with an MFI (230/5) of 0.45 g /10 min. and 1 part of the above-mentioned polyethylene. The mixture's MFI (230/5) is 0.4 g/10 min. Each time 80 parts of a polypropylene with a density of 0.906 g/cm 3 and an MFI
(230/5) på 8,9. g/10 min. blandes med hver gang 20 deler av kautsjukblandingen I og II og overføres ved hjelp av en dobbeltsnekke-ekstruder (D= 35, L= 17, D,23 0°C, 70 omdr./min.) til et granulat. (230/5) of 8.9. g/10 min. mixed with each time 20 parts of the rubber mixture I and II and transferred by means of a twin-screw extruder (D= 35, L= 17, D, 23 0°C, 70 rpm) to a granule.
Av dette granulat presses prøvelegemer og sprøytestøpes. På dette prøvelegeme måles de i tabell 1 oppførte egenskaptsverdier. Samples are pressed from this granulate and injection molded. The property values listed in Table 1 are measured on this test specimen.
Den ifølge oppfinnelsen fremstilte formmasse (med kautsjukblanding I) utmerker seg således ved en forbedret hårdhet som også ved en forbedret slagfasthet ved alle temperaturer. The molding compound produced according to the invention (with rubber mixture I) is thus distinguished by an improved hardness and also by an improved impact resistance at all temperatures.
Eksempel 2 med sammenligningseksempel BExample 2 with comparative example B
Det anvendes de samme kautsjukblandinger I og II, imidlertid forarbeides hver gang 20 deler av dem med hver gang 80 deler av et polypropylen med tetthet 0,903 g/cm<3>og en MFI The same rubber compounds I and II are used, however, each time 20 parts of them are processed with each time 80 parts of a polypropylene with a density of 0.903 g/cm<3> and an MFI
(230/5) på 2,3 g/10 min. under de i Eks. 1 angitte betingelser(230/5) of 2.3 g/10 min. under those in Ex. 1 specified conditions
til et granulat og de derav fremstilte prøvelegemer undersøkes.to a granule and the specimens produced from it are examined.
Det måles de i Tabell 2 oppførte verdier.The values listed in Table 2 are measured.
Denne gang oppfyller formmassene med kautsjukblandingThis time fulfill the molding compounds with rubber compound
11 forutsetningene ifølge oppfinnelsen og overtreffer i deres meka-niske egenskaper spesielt i deres snittslagseighet ved temperaturer under 0°C den andre formmasse. 11 the requirements according to the invention and in their mechanical properties, especially in their shear strength at temperatures below 0°C, surpasses the other molding compounds.
Eksempel 3 med sammenligningseksempel CExample 3 with comparative example C
I en indre blander sammenblandes 1 del av blandingspolymerisatet bestående av 41 vekt% etylenenheter og 59 vekt% propylenenheter med en MFI (230/5) på 0,45 g/10 min. med en del av polyetylen av tetthet 0,945 g/cm<3>og en MFI (190/5) på 0,3 In an internal mixer, 1 part of the mixture polymer consisting of 41% by weight ethylene units and 59% by weight propylene units with an MFI (230/5) of 0.45 g/10 min is mixed together. with a part of polyethylene of density 0.945 g/cm<3>and an MFI (190/5) of 0.3
ved 170°C i 5 minutter. Massen uttrekkes på et varmt tovalseverk til en fell og overføres deretter i et terningsgranulat. Denne kautsjukblanding III har en MFI (230/5) på 0,3 g/10 min. 80 deler av et polypropylen med tetthet på 0,903 g/cm<3>og en MFI (23 0/5) på 2,1 g/10 min. blandes med 2 0 deler av kautsjukblanding III på samme måte som angitt i Eks. 1 og granuleres. Man får en formmasse a, som har i Tabell 3 oppførte egenskaper. at 170°C for 5 minutes. The pulp is extracted on a hot two-roll mill into a trap and then transferred into a cube granulate. This rubber compound III has an MFI (230/5) of 0.3 g/10 min. 80 parts of a polypropylene with a density of 0.903 g/cm<3> and an MFI (23 0/5) of 2.1 g/10 min. mixed with 20 parts of rubber mixture III in the same way as stated in Ex. 1 and granulate. You get a molding compound a, which has the properties listed in Table 3.
Blander man derimot kautsjukblandingen III i samme mengdeforhold under samme betingelser med et polypropylen med tetthet på 0,908 g/cm<3>og MFI (230/5) på 18,7 g/10 min. får man en formmasse b, som ikke tilsvarer betingelsene ifølge oppfinnelsen, og følgelig har mindre gode egenskaper. Måleverdiene er likeledes oppført i tabell 3 (=sammenligningseksempel C). If, on the other hand, the rubber mixture III is mixed in the same proportion under the same conditions with a polypropylene with a density of 0.908 g/cm<3> and MFI (230/5) of 18.7 g/10 min. a molding compound b is obtained, which does not correspond to the conditions according to the invention, and consequently has less good properties. The measured values are also listed in table 3 (=comparison example C).
Eksempel 4Example 4
Under betingelsene for Eks. 1 fremstilles av 6 delerUnder the conditions of Ex. 1 is made from 6 parts
av blandingspolymerisatet bestående av 44 vekt% etylenenheter og 56 vekt% propylenenheter (MFI 230/5)= 1,5 g/10 min) og 4 deler av et polyetylen med en tetthet på 0,947 g/cm 3 og en MFI (190/5) på of the mixed polymer consisting of 44% by weight ethylene units and 56% by weight propylene units (MFI 230/5)= 1.5 g/10 min) and 4 parts of a polyethylene with a density of 0.947 g/cm 3 and an MFI (190/5 ) on
1,6 g/10 min. en kautsjukblanding IV. Dens MFI (230/5) er 2,0 g/1.6 g/10 min. a rubber compound IV. Its MFI (230/5) is 2.0 g/
10 min.10 minutes
Under samme betingelser fremstilles også en kautsjukblanding V. Den oppstår av 6 deler av et etylen-propylen-terpoly-merisat, bestående av 70 vekt% etylenenheter, 24,4 vekt% propylenenheter og 5,6 vekt% etylennorbonenenheter, med en MFI på 0,1 g/ Under the same conditions, a rubber compound V is also produced. It arises from 6 parts of an ethylene-propylene terpolymer, consisting of 70% by weight ethylene units, 24.4% by weight propylene units and 5.6% by weight ethylene norbornene units, with an MFI of 0 .1 g/
10 min. og 4 deler av et polyetylen med en tetthet på 0,948 g/cm<3>10 minutes and 4 parts of a polyethylene with a density of 0.948 g/cm<3>
og en MFI (190/5) på 1,5 g/10 min. Dets MFI (230/5) er 0,2 g/10 min. and an MFI (190/5) of 1.5 g/10 min. Its MFI (230/5) is 0.2 g/10 min.
Hver gang 9 0 deler av et polypropylen med en tetthet på 0,903 g/cm<3>og en MFI (230/5) på 9,5 g/10 min., som inneholder 6,4 vekt% etylenenheter innpolymerisert blandes med hver gang 10 deler av kautsjukblandingen IV og V under betingelsene ifølge Eks. 1 og overføres i hver en granulert formmasse. På de derav fremstilte prøvelegemer måles de i tabell 4 oppførte verdier. Each time 90 parts of a polypropylene with a density of 0.903 g/cm<3> and an MFI (230/5) of 9.5 g/10 min., containing 6.4% by weight of ethylene units polymerized are mixed with each time 10 parts of the rubber mixture IV and V under the conditions according to Ex. 1 and transferred in each one granulated molding compound. The values listed in Table 4 are measured on the test specimens produced therefrom.
Eksempel 5 med sammenligningseksempel EExample 5 with comparative example E
8 deler av et polyetylen med en tetthet på 0,951 g/cm<3>og en MFI (190/5) på 0,15 g/10 min. blandes i indreblanderen ifølge Eks. 3 med to deler av et blandingspolymerisat bestående av 61 vekt% etylenenheter og 3 9 vekt% propylenenheter med en tetthet på 0,86 g/cm<3>og en MFI (230/5) på 0,22 g/10 min. ved en temperatur på 180°C i 4 minutter og granuleres deretter. MFI- 8 parts of a polyethylene with a density of 0.951 g/cm<3> and an MFI (190/5) of 0.15 g/10 min. mixed in the internal mixer according to Ex. 3 with two parts of a blend polymer consisting of 61 wt% ethylene units and 39 wt% propylene units with a density of 0.86 g/cm<3> and an MFI (230/5) of 0.22 g/10 min. at a temperature of 180°C for 4 minutes and then granulated. MFI
av denne kautsjukblanding VI er 0,52 g/10 min. Hver gang 40 deler av denne kautsjukblanding blandes under betingelsene ifølge Eks. 1 med hver gang 60 deler av et polypropylen med en tetthet på 0,904 g/cm 3 og en MFI (230/5) på 2,7 g/10 min. og en polypropylen med en tetthet på 0,907 g/cm3 og en MFI (230/5) på 17,8 g/10 min. og overføres i granulerte formmasser. of this rubber mixture VI is 0.52 g/10 min. Each time 40 parts of this rubber mixture are mixed under the conditions according to Ex. 1 with each time 60 parts of a polypropylene with a density of 0.904 g/cm 3 and an MFI (230/5) of 2.7 g/10 min. and a polypropylene with a density of 0.907 g/cm 3 and an MFI (230/5) of 17.8 g/10 min. and transferred in granulated molding materials.
På de av disse formmasser a og b fremstilte prøve-legemer måles de i tabell 5 oppførte verdier. The values listed in table 5 are measured on the test bodies produced from these molding compounds a and b.
Claims (2)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19782828763 DE2828763A1 (en) | 1978-06-30 | 1978-06-30 | METHOD FOR PRODUCING A POLYPROPYLENE MOLD |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NO792197L true NO792197L (en) | 1980-01-03 |
Family
ID=6043202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO792197A NO792197L (en) | 1978-06-30 | 1979-06-29 | PROCEDURE FOR PREPARING A POLYPROPYLENE PREPARATION |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP0006620B1 (en) |
| JP (1) | JPS557892A (en) |
| AU (1) | AU525407B2 (en) |
| CA (1) | CA1134533A (en) |
| DE (2) | DE2828763A1 (en) |
| NO (1) | NO792197L (en) |
| ZA (1) | ZA793253B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3012804C2 (en) * | 1980-04-02 | 1982-05-27 | Dynamit Nobel Ag, 5210 Troisdorf | Ternary thermoplastic molding composition containing polypropylene copolymers |
| DE3012805C2 (en) * | 1980-04-02 | 1983-04-28 | Dynamit Nobel Ag, 5210 Troisdorf | Ternary injection molding compounds based on ethylene-propylene copolymers or EPDM, polypropylene and polyethylene |
| DE3012763C2 (en) * | 1980-04-02 | 1983-05-19 | Dynamit Nobel Ag, 5210 Troisdorf | Ternary thermoplastic molding composition containing ethylene-propylene copolymer |
| CN107987326B (en) * | 2017-12-18 | 2020-10-02 | 南漳富元鼎航空器材配件有限公司 | Composite rubber of ethylene propylene diene monomer and natural rubber and preparation method thereof |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3256367A (en) * | 1962-08-14 | 1966-06-14 | Union Carbide Corp | Polypropylene compositions having improved impact strength containing polyethylene and ethylene-propylene copolymer |
| FR1456359A (en) * | 1964-12-28 | 1966-10-21 | Dow Chemical Co | Polypropylene compositions of improved impact resistance and their preparation |
| DE1694037A1 (en) * | 1966-03-16 | 1971-07-15 | Eastman Kodak Co | Polypropylene molding compounds |
| US3627852A (en) * | 1967-02-02 | 1971-12-14 | Asahi Chemical Ind | Impact resistant polymer compositions |
| NL162113C (en) * | 1970-10-23 | 1980-04-15 | Stamicarbon | PROCESS FOR PREPARING POLYPROPENE COMPOSITIONS WITH IMPROVED MECHANICAL PROPERTIES |
| GB1402049A (en) * | 1972-12-22 | 1975-08-06 | Stamicarbon | Polypropylene compositions having mechanical properties |
| DE2417093B2 (en) * | 1974-04-08 | 1979-09-27 | Hoechst Ag, 6000 Frankfurt | Process for the production of polypropylene molding compounds |
-
1978
- 1978-06-30 DE DE19782828763 patent/DE2828763A1/en not_active Withdrawn
-
1979
- 1979-06-28 AU AU48475/79A patent/AU525407B2/en not_active Withdrawn - After Issue
- 1979-06-28 DE DE7979102154T patent/DE2962553D1/en not_active Expired
- 1979-06-28 EP EP79102154A patent/EP0006620B1/en not_active Expired
- 1979-06-29 ZA ZA793253A patent/ZA793253B/en unknown
- 1979-06-29 CA CA000331350A patent/CA1134533A/en not_active Expired
- 1979-06-29 NO NO792197A patent/NO792197L/en unknown
- 1979-06-29 JP JP8155179A patent/JPS557892A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE2962553D1 (en) | 1982-06-03 |
| DE2828763A1 (en) | 1980-01-10 |
| EP0006620A1 (en) | 1980-01-09 |
| ZA793253B (en) | 1980-07-30 |
| JPS557892A (en) | 1980-01-21 |
| EP0006620B1 (en) | 1982-04-21 |
| AU525407B2 (en) | 1982-11-04 |
| AU4847579A (en) | 1980-01-03 |
| CA1134533A (en) | 1982-10-26 |
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