NO750882L - - Google Patents
Info
- Publication number
- NO750882L NO750882L NO750882A NO750882A NO750882L NO 750882 L NO750882 L NO 750882L NO 750882 A NO750882 A NO 750882A NO 750882 A NO750882 A NO 750882A NO 750882 L NO750882 L NO 750882L
- Authority
- NO
- Norway
- Prior art keywords
- propellant
- polymer
- parts
- styrene
- olefin
- Prior art date
Links
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 46
- 239000003380 propellant Substances 0.000 claims description 35
- 229920000578 graft copolymer Polymers 0.000 claims description 20
- 229920000098 polyolefin Polymers 0.000 claims description 20
- 229920000642 polymer Polymers 0.000 claims description 18
- 239000000203 mixture Substances 0.000 claims description 13
- 239000000126 substance Substances 0.000 claims description 10
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 8
- -1 polyethylenes Polymers 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 229920001169 thermoplastic Polymers 0.000 claims description 5
- 239000004698 Polyethylene Substances 0.000 claims description 4
- 229920000573 polyethylene Polymers 0.000 claims description 4
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 3
- TZIHFWKZFHZASV-UHFFFAOYSA-N methyl formate Chemical compound COC=O TZIHFWKZFHZASV-UHFFFAOYSA-N 0.000 claims 2
- 239000004416 thermosoftening plastic Substances 0.000 claims 1
- 239000002245 particle Substances 0.000 description 23
- 239000006260 foam Substances 0.000 description 8
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 8
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 6
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 4
- 239000005977 Ethylene Substances 0.000 description 4
- 239000007900 aqueous suspension Substances 0.000 description 4
- 229920001038 ethylene copolymer Polymers 0.000 description 4
- 238000005187 foaming Methods 0.000 description 4
- 239000008187 granular material Substances 0.000 description 4
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 3
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 3
- 150000001298 alcohols Chemical class 0.000 description 3
- 125000004432 carbon atom Chemical group C* 0.000 description 3
- 229920001577 copolymer Polymers 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 229930195733 hydrocarbon Natural products 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- 238000006116 polymerization reaction Methods 0.000 description 3
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 2
- AFABGHUZZDYHJO-UHFFFAOYSA-N 2-Methylpentane Chemical compound CCCC(C)C AFABGHUZZDYHJO-UHFFFAOYSA-N 0.000 description 2
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 description 2
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 235000019400 benzoyl peroxide Nutrition 0.000 description 2
- 239000001273 butane Substances 0.000 description 2
- DKPFZGUDAPQIHT-UHFFFAOYSA-N butyl acetate Chemical compound CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000007334 copolymerization reaction Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- NNPPMTNAJDCUHE-UHFFFAOYSA-N isobutane Chemical compound CC(C)C NNPPMTNAJDCUHE-UHFFFAOYSA-N 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 2
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- QISOBCMNUJQOJU-UHFFFAOYSA-N 4-bromo-1h-pyrazole-5-carboxylic acid Chemical compound OC(=O)C=1NN=CC=1Br QISOBCMNUJQOJU-UHFFFAOYSA-N 0.000 description 1
- JHWGFJBTMHEZME-UHFFFAOYSA-N 4-prop-2-enoyloxybutyl prop-2-enoate Chemical compound C=CC(=O)OCCCCOC(=O)C=C JHWGFJBTMHEZME-UHFFFAOYSA-N 0.000 description 1
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical class C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 1
- 239000004338 Dichlorodifluoromethane Substances 0.000 description 1
- 239000004606 Fillers/Extenders Substances 0.000 description 1
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Natural products OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 description 1
- VQTUBCCKSQIDNK-UHFFFAOYSA-N Isobutene Chemical group CC(C)=C VQTUBCCKSQIDNK-UHFFFAOYSA-N 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 1
- 229920002367 Polyisobutene Polymers 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 description 1
- XYLMUPLGERFSHI-UHFFFAOYSA-N alpha-Methylstyrene Chemical compound CC(=C)C1=CC=CC=C1 XYLMUPLGERFSHI-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- NEHMKBQYUWJMIP-NJFSPNSNSA-N chloro(114C)methane Chemical compound [14CH3]Cl NEHMKBQYUWJMIP-NJFSPNSNSA-N 0.000 description 1
- HRYZWHHZPQKTII-UHFFFAOYSA-N chloroethane Chemical compound CCCl HRYZWHHZPQKTII-UHFFFAOYSA-N 0.000 description 1
- AFYPFACVUDMOHA-UHFFFAOYSA-N chlorotrifluoromethane Chemical compound FC(F)(F)Cl AFYPFACVUDMOHA-UHFFFAOYSA-N 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- PXBRQCKWGAHEHS-UHFFFAOYSA-N dichlorodifluoromethane Chemical compound FC(F)(Cl)Cl PXBRQCKWGAHEHS-UHFFFAOYSA-N 0.000 description 1
- 235000019404 dichlorodifluoromethane Nutrition 0.000 description 1
- 229940042935 dichlorodifluoromethane Drugs 0.000 description 1
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- UIWXSTHGICQLQT-UHFFFAOYSA-N ethenyl propanoate Chemical compound CCC(=O)OC=C UIWXSTHGICQLQT-UHFFFAOYSA-N 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 229960003750 ethyl chloride Drugs 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 239000004503 fine granule Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000001530 fumaric acid Substances 0.000 description 1
- 238000010559 graft polymerization reaction Methods 0.000 description 1
- 150000008282 halocarbons Chemical class 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 239000001282 iso-butane Substances 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 150000002688 maleic acid derivatives Chemical class 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- LCGLNKUTAGEVQW-UHFFFAOYSA-N methyl monoether Natural products COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 description 1
- 229940073584 methylene chloride Drugs 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- KKFHAJHLJHVUDM-UHFFFAOYSA-N n-vinylcarbazole Chemical compound C1=CC=C2N(C=C)C3=CC=CC=C3C2=C1 KKFHAJHLJHVUDM-UHFFFAOYSA-N 0.000 description 1
- 239000003505 polymerization initiator Substances 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 239000003516 soil conditioner Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000012798 spherical particle Substances 0.000 description 1
- 150000003440 styrenes Chemical class 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 229920001567 vinyl ester resin Polymers 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/16—Making expandable particles
- C08J9/18—Making expandable particles by impregnating polymer particles with the blowing agent
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2351/00—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers
- C08J2351/06—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Graft Or Block Polymers (AREA)
Description
Denne oppfinnelse angår oppskumbare polymermasser som inneholder en podepplymor av styren og en olefinpolymer og et drivmiddel, sant en fremgangsmåte til fremstilling av slike masser. This invention relates to foamable polymer masses which contain a graft polymer of styrene and an olefin polymer and a propellant, and a method for producing such masses.
Oet er kjent at oppskumbare termoplastiske polymerar kan fremstilles ved homogen fordeling av et drivmiddel i en termoplastisk polymer. således er det eksempelvis kjent fremgangsmåter til fremstilling av oppskumbare styrenpolymerer, hvor man bringar fin-kornet styrenpolymer 1 kontakt med et gassformig eller vaeskeformig organisk drivmiddel. Dette kan eksempelvis skje i vandig suspensjon, hvor det som drivmiddel kan anvendes alifatiske hydrokarboner, så som butan, pentan, haksan eller halogenhydrokarboner. Slike drivmiddelholdige styrenpolymerer er meget lagringsdyktige, slik at de uten teknisk kostbare forholdsregler kan transporteres til det stédhhvor de skal forarbeides og oppskummes til skumstoffer. It is known that foamable thermoplastic polymers can be produced by homogeneous distribution of a propellant in a thermoplastic polymer. thus, for example, methods are known for the production of foamable styrene polymers, where fine-grained styrene polymer 1 is brought into contact with a gaseous or liquid organic propellant. This can, for example, occur in an aqueous suspension, where aliphatic hydrocarbons such as butane, pentane, hexane or halogenated hydrocarbons can be used as propellants. Such propellant-containing styrene polymers are very storable, so that they can be transported without technically expensive precautions to the place where they are to be processed and foamed into foams.
En slik arbeidsmåte har hittil ikke vist seg tilfredstil-lende ved fremstilling av oppskumbare masser på basis av olefinpolymerer. Masser av oppskumbare olefinpolymerer inneholder som drivmiddel derfor stort sett faste stoffer som ved oppvarming spaltes under dannelse av gassformige stoffer, hvorved massene sveller opp. Slike masser kan imidlertid ikke oppskummes i former og sintres til formlegemar, da de esbare partikler tapar volum umiddelbart etter oppskummingen. Olefinpolymerisater kan fremstilles ved hjelp av hydrokarboner eller klorhydrokarboner ved blanding i ekstruder ved temperaturer over polymerens mykn ing a punkt og oppskumming av blandingen idet denne forlater ekstruderen.Beller ikke er det mulig å aintre skumstoffpartikler som er fremstilt på denne måte, i former, da partiklene skrumper inn ved fornyet oppvarming og ikke fyller formene. Such a method of working has so far not proved satisfactory in the production of foamable masses based on olefin polymers. Masses of foamable olefin polymers therefore mostly contain solid substances as a propellant which, when heated, decompose to form gaseous substances, whereby the masses swell up. However, such masses cannot be foamed into molds and sintered into shaped bodies, as the esable particles lose volume immediately after foaming. Olefin polymers can be produced using hydrocarbons or chlorohydrocarbons by mixing in an extruder at temperatures above the polymer's softening point and foaming the mixture as it leaves the extruder. Otherwise, it is not possible to insert foam particles produced in this way into molds, as the particles shrinks when reheated and does not fill the molds.
Blander man styrenpolymerer og olefinpolymerer og tilsetter et drivmiddel til blandingen, så kan blandingen oppskummesi man får imidlertid et skum med dårlig mekanisk fasthet som smuldrer opp etter avkjøling. If you mix styrene polymers and olefin polymers and add a propellant to the mixture, the mixture can foam up, but you get a foam with poor mechanical strength that crumbles after cooling.
Oppfinnelsen tar således sikte på å tilveiebringe oppskumbare polymermasser av én termoplastisk polymer og et drivmiddel, hvilke masser ikke har de nevnte ulemper. The invention thus aims to provide foamable polymer masses of one thermoplastic polymer and a propellant, which masses do not have the aforementioned disadvantages.
Ifølge oppfinnelsen løses dette problem ved at man bringer en podepolymer av styren og en olefinpolymer i kontakt med et drivmiddel. According to the invention, this problem is solved by bringing a graft polymer of styrene and an olefin polymer into contact with a propellant.
Polymermassen ifølge oppfinnelsen har den fordel at de lar seg oppskumme til skumstoffer med egenskaper som særlig de ikke oppskummede podepolymerer av styren og olefinpolymerer med liten ole-f inpolymer-andel ikke har. Således er for eksempel skum fremstilt av de oppskumbare masser ifølge oppfinnelsen uømfintlige overfor be-stemte løsningsmidler, det vil si at det ikke oppløses av disse. Det var derfor overraskande at polymermaasene ifølge oppfinnelsen lar seg forarbeide til skumstoffer med fordelaktige egenskaper. The polymer mass according to the invention has the advantage that it can be foamed into foams with properties that, in particular, the non-foamed graft polymers of styrene and olefin polymers with a small olefin polymer proportion do not have. Thus, for example, foam produced from the foamable masses according to the invention is insensitive to certain solvents, that is to say, it is not dissolved by these. It was therefore surprising that the polymer meshes according to the invention can be processed into foams with advantageous properties.
Med podepolymerer menes i det foreliggende podepolymerer av styren på olefinpolymerer, slik de fås ved polymerisering av styren i nærvær av olefinpolymerer. Pode polymerenes styren innhold er fordelaktig mellom 10 og 95 vektK, fortrinnsvis mellom 30 og 90 vekt%. Ved fremstillingen av pode polymerene kan det foruten styren også anvendes andre, med styren ko polymer i ærbare monomerer i slike mengder at etyrenandelen, beregnet på monomerene, utgjør minst 50 vekt£. Som slike kopolymeriseringskomponenter kan eksempelvis anvendest a-metylstyren, kjernehalogenerte styrener, akrylnitril, estere av akryl- eller metakrylsyre og alkoholér med 1-8 karbonatomer, vinyl-karbazol eller også små mengder av forbindelser som inneholder to polymeriserbare dobbeltbindinger, så som butadien, dlvinylbenzen eller butandioldiakrylat• By graft polymers is meant in the present context graft polymers of styrene on olefin polymers, as they are obtained by polymerization of styrene in the presence of olefin polymers. The styrene content of the graft polymers is advantageously between 10 and 95% by weight, preferably between 30 and 90% by weight. In the production of the graft polymers, in addition to styrene, others can also be used, with styrene as a polymer in respectable monomers in such quantities that the proportion of ethylene, calculated on the monomers, amounts to at least 50% by weight. As such copolymerization components can be used, for example, α-methylstyrene, core halogenated styrenes, acrylonitrile, esters of acrylic or methacrylic acid and alcohols with 1-8 carbon atoms, vinyl carbazole or also small amounts of compounds containing two polymerizable double bonds, such as butadiene, dlvinylbenzene or butanediol diacrylate•
Podepolymerisasjonen utføres på i og for seg kjent måte. The graft polymerization is carried out in a manner known per se.
Således kan eksempelvis et granulat av olefinpolymerer sammen med styren og en polymeriseringsinitiator smeltes i blandekammeret i en ekstruder ved høyere temperatur uten lufttilgaag. Styrenet blir da podet på olefinpolymeren. Thus, for example, a granule of olefin polymers together with styrene and a polymerization initiator can be melted in the mixing chamber of an extruder at a higher temperature without air supply. The styrene is then grafted onto the olefin polymer.
Seer 1 lg godt egnede olefinpolymerer er polymerer av etylen, propylen, buten-1 eller isobutylen. Blant disse foretrekkes etylen-homo- og -kopolymerene. Således kan man for eksempel anvende ety-lenhomopolymerer som er fremstilt ved høytrykks- henholdsvis lavtrykks -polymerisering og har en tetthet mellom 0,85 og 0,965 g/cm<3>. Egnede etylenkopolymerer inneholder som komonomerer enten andre de-finer eller eksempelvis vinylester av syrer med 2-4 karbonatomer, Seer 1 lg well-suited olefin polymers are polymers of ethylene, propylene, butene-1 or isobutylene. Among these, the ethylene homo- and copolymers are preferred. Thus, for example, ethylene homopolymers can be used which are produced by high-pressure or low-pressure polymerization and have a density between 0.85 and 0.965 g/cm<3>. Suitable ethylene copolymers contain as comonomers either other de-fins or, for example, vinyl esters of acids with 2-4 carbon atoms,
så som vinylacetat, vinylpropionat eller akrylsyre- og roetakrylsyre-eatere av alkoholer med 1-10karbonatomer. videre kan man bruke karbonoksyd, styren, vinylklorid, svoveldioksyd, fumar- og malein-syraestere.Blandinger av olefinpolymerer kan også anvendes, eksempelvis blandinger av høytrykks- eller lavtrykks-polyetylen og ety-lenkopoiymerer, så som kopolymerer av etylen og vinylacetat. such as vinyl acetate, vinyl propionate or acrylic acid and rotacrylic acid eaters of alcohols with 1-10 carbon atoms. furthermore, carbon monoxide, styrene, vinyl chloride, sulfur dioxide, fumaric and maleic acid esters can be used. Mixtures of olefin polymers can also be used, for example mixtures of high-pressure or low-pressure polyethylene and ethylene copolymers, such as copolymers of ethylene and vinyl acetate.
Kopolymerinnholdet i etylenkopolymerene ligger fortrinnsvis mellom 1 og 49, spesielt mellom 3 og 35 vekt%. Ko polymeren©a smelteindeks kan variere innen vide grenser og er særlig 0,1-1000 g/10 min. The copolymer content in the ethylene copolymers is preferably between 1 and 49, especially between 3 and 35% by weight. The melt index of the polymer can vary within wide limits and is in particular 0.1-1000 g/10 min.
(190°c/2,16 kg). Man anvender partikler av podepolymerene med et tverrmål mellom 0,1 og 5 mm, fortrinnsvis 0,5-2,5 mm. (190°c/2.16 kg). Particles of the graft polymers with a transverse dimension between 0.1 and 5 mm, preferably 0.5-2.5 mm, are used.
Som drivmiddel anvendes hensiktsmessig lavmolekylære organiske stoffer med kokepunkt mellom -50 og 100°c. Fortrinnsvis anvendes under normale betingeleer gassformige eller væskeformige, ali-fat i ske eller cykloalifatiske hydrokarboner, så som propan, butan, pantan, heksan eller cykloheksan, isobutan, isopantan eller isohek-san. Også halogenhydrokarboner, så som metylklorid, metylenklorid, etylklorid, diklordifluormetan, trifluorklormetan, er egnet. Videre kan man bruke etere, så som dimetyl- eller dietyleter, eller ketoner så som aceton. Disse drivmidler kan anvendes hver for seg eller i blandinger. De foreligger i de findelte podepolymerer i mengder mellom 2 og 15 vekt%, fortrinnsvis mellom 4 og 10 vekt%. Dessuten har det vist seg fordelaktig å innarbeide i de drivmiddelholdige podepolymerer alkoholer i mengder på 1-10 vékt%, for eksempel etanol, i tillegg til drivmidlene. Low-molecular organic substances with a boiling point between -50 and 100°c are suitably used as propellants. Preferably, under normal conditions, gaseous or liquid aliphatic or cycloaliphatic hydrocarbons are used, such as propane, butane, pentane, hexane or cyclohexane, isobutane, isopantane or isohexane. Halogen hydrocarbons, such as methyl chloride, methylene chloride, ethyl chloride, dichlorodifluoromethane, trifluorochloromethane, are also suitable. You can also use ethers, such as dimethyl or diethyl ether, or ketones such as acetone. These propellants can be used individually or in mixtures. They are present in the finely divided graft polymers in amounts between 2 and 15% by weight, preferably between 4 and 10% by weight. In addition, it has proven advantageous to incorporate alcohols in amounts of 1-10% by weight, for example ethanol, in the propellant-containing graft polymers, in addition to the propellants.
De drivmiddelholdige partikler av podepolymerene kan fremstilles ved at de findelte pode po lytterer bringes i kontakt med drivmidlene. Dette kan skje ved normaltem peratur under normalt trykk eller ved overtrykk.Drivmiddelet får polymerene til å svelle og fordeler seg homogent i partiklene. For oppnåelse av en ensartet fordeling av drivmidlene i partiklene er det nødvendig å anvende en oppholdstid i den drivmiddelholdige atmosfære på 0,5- ca. 50 timer, fortrinnsvis 1-30 timer. Partiklene kan også erholdes ved at pode-polyrnerene behandles med drivmiddelet i vandigesuspensjon. The propellant-containing particles of the graft polymers can be produced by bringing the finely divided graft particles into contact with the propellants. This can happen at normal temperature under normal pressure or at overpressure. The propellant causes the polymers to swell and distribute homogeneously in the particles. To achieve a uniform distribution of the propellants in the particles, it is necessary to use a residence time in the propellant-containing atmosphere of 0.5- approx. 50 hours, preferably 1-30 hours. The particles can also be obtained by treating the graft polymers with the propellant in aqueous suspension.
Mest hensiktsmessig anvendes et temperatur-område mellom -10 og 100°c. Trykket ligger over 0,1 og ikke over 50 atmosfærer. Man kan anvende drivmidlene i overskudd og skille de drivmiddelholdige podepolymerer fra drivmiddelet når polymerene har opptatt det A temperature range between -10 and 100°c is most appropriately used. The pressure is above 0.1 and not above 50 atmospheres. One can use the propellants in excess and separate the propellant-containing graft polymers from the propellant when the polymers have occupied it
nødvendige innhold av drivmiddel.required propellant content.
Podepolymerene kan forarbeides i blanding med andre stoffer, således kan podepolymerene inneholde brannhemmende midler, fargestoffer, fyllstoffer, glidemidler eller andre polymere stoffer, for eksempel kautschuk1ignende stoffer, så som polyisobutylen. The graft polymers can be processed in a mixture with other substances, thus the graft polymers can contain fire retardants, dyes, fillers, lubricants or other polymeric substances, for example rubber-like substances, such as polyisobutylene.
Formmassene ifølge oppfinnelsen kan oppskummes og de oppskummede partikler anvendes som sådanne. Således kan de oppakummede partikler eksempelvis anvendes som fyllstoffer for lettbetong, som jordforbedringsmiddel eller i anlegg, for eksempel i kabelsjakter. Videre er det mulig å binde de oppakummede partikler med bindemid-lar, som likeledes kan vere oppskummet. De oppakummede partikler kan ytterligere findeles og anvendes som ekstendere for dis persjons-f arger. The molding compounds according to the invention can be foamed and the foamed particles used as such. Thus, the collected particles can, for example, be used as fillers for lightweight concrete, as a soil conditioner or in facilities, for example in cable shafts. Furthermore, it is possible to bind the foamed particles with binders, which can likewise be foamed. The accumulated particles can be further crushed and used as extenders for dispersion colours.
Deler og prosentangivelser i eksemplene er på vektbasls. Parts and percentages in the examples are by weight.
Bksempel 1Example 1
100 deler av en etyrenkodepolymer som var fremstilt ved kodepolymerisering av styren med dibenzoylperoksyd på høytrykka-polyetylen med en tetthet på 0,918 g/cm og en smelteindeks på 4 g/10 min. (190°c/2,16 kg) og har et atyrentnnhold på 50 vekt%, blir i form av et fint granulat med et partikkeltverrmål på 1 mm og en part ikke Hengde på 1-1,5 mm blandet med 2 deler pantan og 5 deler metylenklorid i 15 minutter i en gasstett lukket blander. Deretter hensettes blandingen i 24 timer i blenderen. Han får 'et ekspanderbart granulat som inneholder drivmlddelblandingen i homogen fordeling. 100 parts of an ethylene copolymer which was prepared by copolymerization of styrene with dibenzoyl peroxide on high pressure polyethylene with a density of 0.918 g/cm and a melt index of 4 g/10 min. (190°c/2.16 kg) and has an atyren content of 50% by weight, becomes in the form of a fine granule with a particle diameter of 1 mm and a part not suspended of 1-1.5 mm mixed with 2 parts pantan and 5 parts methylene chloride for 15 minutes in a gas-tight closed mixer. The mixture is then left for 24 hours in the blender. He receives an expandable granule containing the propellant mixture in homogeneous distribution.
Det drivmiddelholdige granulat behandles med vanndamp iThe propellant-containing granules are treated with steam i
10 sekunder ved et for-trykk på 1,5 ato ved hjelp av et foroppskum-niinøsapparat, slik det er vanlig ved foroppskumming av styrenpolymerer. Partiklene eser opp og har en litervekt på ca. 30 g. De er uløselige i toluen. 10 seconds at a pre-pressure of 1.5 ato using a pre-foam niinous apparatus, as is usual for pre-foaming styrene polymers. The particles rise up and have a liter weight of approx. 30 g. They are insoluble in toluene.
Eksempel 2Example 2
100 deler av en etylen-vinylacetat-kopolymer med et vinylacetat innhold på 12 vekt% og en tetthet på 0,935 og en smelteindeks på 4 g/10 min. (190°c/2,16 kg) podes med 186 deler styren under an-vendelse av 1,2 deler dibensoylperoksyd som initiator. Han får en podepolymerilmed 65 vekt% styren. Polymeren granuleres til partikkeltverrmål på 1-1,5 mm. På samme måte som i eksempel 1 behandles disse partikler med en blanding av 3 deler pantan og 6 deler metylforåiat 100 parts of an ethylene-vinyl acetate copolymer with a vinyl acetate content of 12% by weight and a density of 0.935 and a melt index of 4 g/10 min. (190°c/2.16 kg) is seeded with 186 parts of styrene using 1.2 parts of dibenzoyl peroxide as initiator. He gets a graft polymer with 65% by weight of styrene. The polymer is granulated to a particle diameter of 1-1.5 mm. In the same way as in example 1, these particles are treated with a mixture of 3 parts panthane and 6 parts methyl foroiate
i en blander, hvorved man får et ekspanderbart granulat som inneholder drivmiddelet i jevn fordeling. in a mixer, whereby an expandable granule is obtained which contains the propellant in an even distribution.
Deretter blir partiklene foroppskummet ved hjelp av damp med et trykk på 1,5 ato, hvorved man får foroppskummede partikler med en tetthet på 2,5 g/l. Partiklene er uløselige i n-butylacetat. The particles are then pre-foamed using steam at a pressure of 1.5 ato, whereby pre-foamed particles with a density of 2.5 g/l are obtained. The particles are insoluble in n-butyl acetate.
Efesempal3Ephesians 3
20 deler av et høytrykkspolyetylen polymeriseres med 80 deler styren og 0,3 del dikumylperoksyd i vandig suspensjon. Man får en pode polymer med 80% styren. De kulef ormede partikler med tverrmål på 1,0-2,5 mm behandles 1 en blander med 8 deler pantan. Etter en oppholdstid på 12 timer kan partiklene oppskummes med vanndamp. De oppskummede partikler har en lltervekt på 18 g. De er i motsetning til det uskummede produkt uløselige i toluen. 20 parts of a high-pressure polyethylene are polymerized with 80 parts of styrene and 0.3 parts of dicumyl peroxide in aqueous suspension. You get a graft polymer with 80% styrene. The spherical particles with a transverse dimension of 1.0-2.5 mm are processed in a mixer with 8 parts pantan. After a residence time of 12 hours, the particles can be foamed with steam. The foamed particles have a net weight of 18 g. Unlike the unfoamed product, they are insoluble in toluene.
Eksempel 4Example 4
Podepolymeren fra eksempel 3 kan etter polymeriseringenssv avslutning i vandig suspensjon tilføres 6,8 deler pentan ved for-høyet temperatur eller ved normaItemperatur. ved normaltemperatur skjer tilsetningen av drivmiddelet uten trykk, ved 90°c ved et be-gynne lsest rykk på 5 atmosfærer. i løpet av 12 timer faller trykket til 1,2 atmosfærer, og innføringen av drivmiddelet er ferdig. Ved normaltrykk behøves 20 timer for dette opptak. The graft polymer from example 3 can, after the end of the polymerization, be added in aqueous suspension to 6.8 parts of pentane at elevated temperature or at normal temperature. at normal temperature the addition of the propellant takes place without pressure, at 90°c with an initial thrust of 5 atmospheres. within 12 hours the pressure drops to 1.2 atmospheres, and the introduction of the propellant is complete. At normal pressure, 20 hours are needed for this recording.
Ved oppskummlng med vanndamp får man partikler med en lltervekt mellom 18 og 20 g. When foaming with water vapor, particles with a filter weight of between 18 and 20 g are obtained.
Claims (10)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2413321A DE2413321A1 (en) | 1974-03-20 | 1974-03-20 | Foamable graft polymers of styrene on olefin polymers |
Publications (1)
Publication Number | Publication Date |
---|---|
NO750882L true NO750882L (en) | 1975-09-23 |
Family
ID=5910585
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO750882A NO750882L (en) | 1974-03-20 | 1975-03-14 |
Country Status (10)
Country | Link |
---|---|
JP (1) | JPS50127965A (en) |
BE (1) | BE826910A (en) |
DE (1) | DE2413321A1 (en) |
DK (1) | DK112275A (en) |
ES (1) | ES435766A1 (en) |
FR (1) | FR2264841A1 (en) |
IT (1) | IT1033439B (en) |
NL (1) | NL7503347A (en) |
NO (1) | NO750882L (en) |
SE (1) | SE7503068L (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA1269495A (en) * | 1985-11-05 | 1990-05-22 | Masato Naito | Expanded particles of modified polyethylene and foamed articles obtained therefrom |
JP4072553B2 (en) * | 2003-03-25 | 2008-04-09 | 積水化成品工業株式会社 | Styrene-modified linear low-density polyethylene-based expandable resin particles, method for producing the same, pre-expanded particles, and expanded molded article |
US7767724B2 (en) | 2003-03-25 | 2010-08-03 | Sekisui Plastics Co., Ltd. | Expandable resin beads of styrene-modified straight-chain and low-density polyethylene, process for production thereof, pre-expand beads, and foams |
US20060052466A1 (en) * | 2004-09-03 | 2006-03-09 | Handa Yash P | Expanded and extruded thermoplastic foams made with methyl formate-based blowing agents |
US8309619B2 (en) | 2004-09-03 | 2012-11-13 | Pactiv LLC | Reduced-VOC and non-VOC blowing agents for making expanded and extruded thermoplastic foams |
-
1974
- 1974-03-20 DE DE2413321A patent/DE2413321A1/en active Pending
-
1975
- 1975-03-05 IT IT20945/75A patent/IT1033439B/en active
- 1975-03-14 NO NO750882A patent/NO750882L/no unknown
- 1975-03-18 SE SE7503068A patent/SE7503068L/xx unknown
- 1975-03-18 ES ES435766A patent/ES435766A1/en not_active Expired
- 1975-03-19 DK DK112275A patent/DK112275A/da unknown
- 1975-03-20 FR FR7508709A patent/FR2264841A1/en active Granted
- 1975-03-20 JP JP50033081A patent/JPS50127965A/ja active Pending
- 1975-03-20 NL NL7503347A patent/NL7503347A/en unknown
- 1975-03-20 BE BE154523A patent/BE826910A/en unknown
Also Published As
Publication number | Publication date |
---|---|
FR2264841A1 (en) | 1975-10-17 |
SE7503068L (en) | 1975-09-22 |
DE2413321A1 (en) | 1975-10-23 |
BE826910A (en) | 1975-09-22 |
DK112275A (en) | 1975-09-21 |
ES435766A1 (en) | 1976-12-16 |
JPS50127965A (en) | 1975-10-08 |
FR2264841B3 (en) | 1977-11-25 |
NL7503347A (en) | 1975-09-23 |
IT1033439B (en) | 1979-07-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA1120649A (en) | Process for producing expandable thermoplastic resin beads using polypropylene as nucleus | |
US3959189A (en) | Process for producing polyethylene resin particles and foamable polyethylene resin particles | |
US4168353A (en) | Process for producing foamable polyethylene resin particles | |
CA1162000A (en) | Particulate styrene polymers containing blowing agent | |
JPH0577696B2 (en) | ||
JP2688248B2 (en) | Granular expandable polymer | |
US3503908A (en) | Method of making expandable polymers | |
NO750884L (en) | ||
NO750882L (en) | ||
US3975327A (en) | Particulate, expandable self-extinguishing styrene polymers showing good processability | |
CA2018278A1 (en) | Preparation of bead-form expandable styrene polymers | |
JPH06859B2 (en) | Expandable styrene resin particles and method for producing the same | |
DE3814783A1 (en) | Expandable polymer alloy in particle form, and process for the preparation thereof | |
US3631132A (en) | Flame resistant expandable styrene polymers containing tribromophenyl-dibromopropyl ether and method of preparing | |
JPS598294B2 (en) | Anti-clumping expandable styrenic polymer | |
NO750886L (en) | ||
KR20010073162A (en) | Process for the preparation of expanded polyvinylarene particles | |
CA1120650A (en) | Process for producing expandable thermoplastic resin beads | |
JPS5928339B2 (en) | Method for manufacturing expandable polystyrene resin particles | |
JPS6310181B2 (en) | ||
JPS63150336A (en) | Expansible styrol polymer and styrol polymer foaming substance | |
KR100536089B1 (en) | Method for Preparing Flame-Retardant Styrenic Resin with High Degree of Expansion Using a Small Amount of Blowing Agents | |
JPH0367537B2 (en) | ||
KR102242090B1 (en) | Method for preparing expandable aromatic vinyl resin bead | |
KR100682241B1 (en) | Expandable Polystyrene Resin, Process for Preparing Thereof and Expanded Product Produced by Using Said Resin Particules |