NO774215L - PARTICULAR SHAPES, SELF-EXTINGUISHING THERMOPLASTIC MOLDS - Google Patents
PARTICULAR SHAPES, SELF-EXTINGUISHING THERMOPLASTIC MOLDSInfo
- Publication number
- NO774215L NO774215L NO774215A NO774215A NO774215L NO 774215 L NO774215 L NO 774215L NO 774215 A NO774215 A NO 774215A NO 774215 A NO774215 A NO 774215A NO 774215 L NO774215 L NO 774215L
- Authority
- NO
- Norway
- Prior art keywords
- molding compounds
- compounds
- particles
- organic bromine
- self
- Prior art date
Links
- 229920001169 thermoplastic Polymers 0.000 title 1
- 239000004416 thermosoftening plastic Substances 0.000 title 1
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 28
- 229920000642 polymer Polymers 0.000 claims description 15
- 239000002245 particle Substances 0.000 claims description 13
- 150000001875 compounds Chemical class 0.000 claims description 12
- 150000005526 organic bromine compounds Chemical class 0.000 claims description 10
- 239000003380 propellant Substances 0.000 claims description 9
- 238000000465 moulding Methods 0.000 claims description 7
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims description 6
- 235000012239 silicon dioxide Nutrition 0.000 claims description 6
- 239000003063 flame retardant Substances 0.000 claims description 5
- 238000009757 thermoplastic moulding Methods 0.000 claims description 4
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 3
- 125000001931 aliphatic group Chemical group 0.000 claims description 3
- 125000004432 carbon atom Chemical group C* 0.000 claims description 3
- 125000003118 aryl group Chemical group 0.000 claims description 2
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 5
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical class [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 4
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 4
- 229910052794 bromium Inorganic materials 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000000181 anti-adherent effect Effects 0.000 description 3
- -1 bromine compound Chemical class 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005187 foaming Methods 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- VBICKXHEKHSIBG-UHFFFAOYSA-N 1-monostearoylglycerol Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCC(O)CO VBICKXHEKHSIBG-UHFFFAOYSA-N 0.000 description 2
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 2
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000000379 polymerizing effect Effects 0.000 description 2
- 229920002223 polystyrene Polymers 0.000 description 2
- AJDIZQLSFPQPEY-UHFFFAOYSA-N 1,1,2-Trichlorotrifluoroethane Chemical compound FC(F)(Cl)C(F)(Cl)Cl AJDIZQLSFPQPEY-UHFFFAOYSA-N 0.000 description 1
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- VXEGSRKPIUDPQT-UHFFFAOYSA-N 4-[4-(4-methoxyphenyl)piperazin-1-yl]aniline Chemical compound C1=CC(OC)=CC=C1N1CCN(C=2C=CC(N)=CC=2)CC1 VXEGSRKPIUDPQT-UHFFFAOYSA-N 0.000 description 1
- 238000004438 BET method Methods 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
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 150000001298 alcohols 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
- 239000002216 antistatic agent Substances 0.000 description 1
- 239000007900 aqueous suspension Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000001273 butane Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- NEHMKBQYUWJMIP-NJFSPNSNSA-N chloro(114C)methane Chemical compound [14CH3]Cl NEHMKBQYUWJMIP-NJFSPNSNSA-N 0.000 description 1
- 229920001577 copolymer Polymers 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
- 150000002148 esters Chemical class 0.000 description 1
- 229920006248 expandable polystyrene Polymers 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000006261 foam material Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- YQEMORVAKMFKLG-UHFFFAOYSA-N glycerine monostearate Natural products CCCCCCCCCCCCCCCCCC(=O)OC(CO)CO YQEMORVAKMFKLG-UHFFFAOYSA-N 0.000 description 1
- SVUQHVRAGMNPLW-UHFFFAOYSA-N glycerol monostearate Natural products CCCCCCCCCCCCCCCCC(=O)OCC(O)CO SVUQHVRAGMNPLW-UHFFFAOYSA-N 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920002587 poly(1,3-butadiene) polymer Polymers 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 239000011814 protection agent Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000005049 silicon tetrachloride Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 150000003440 styrenes Chemical class 0.000 description 1
- 150000004867 thiadiazoles Chemical class 0.000 description 1
- 150000003673 urethanes Chemical class 0.000 description 1
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 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
- C08J9/22—After-treatment of expandable particles; Forming foamed products
- C08J9/224—Surface treatment
-
- 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
- C08J9/0014—Use of organic additives
- C08J9/0033—Use of organic additives containing sulfur
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/36—Sulfur-, selenium-, or tellurium-containing compounds
- C08K5/45—Heterocyclic compounds having sulfur in the ring
- C08K5/46—Heterocyclic compounds having sulfur in the ring with oxygen or nitrogen in the ring
-
- 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
- C08J2325/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Derivatives of such polymers
- C08J2325/02—Homopolymers or copolymers of hydrocarbons
- C08J2325/04—Homopolymers or copolymers of styrene
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Mold Materials And Core Materials (AREA)
- Catching Or Destruction (AREA)
Description
Partikkelformige, selvslukkendeParticulate, self-extinguishing
termoplastiske formmasser.thermoplastic molding compounds.
Gjenstanden for tysk patentsøknad P 25 45 223 er termoplastiske formmasser på basis av styrenpolymerisater, som som flammebeskyttende middel inneholder en organisk bromforbindelse av den generelle formel The subject of German patent application P 25 45 223 is thermoplastic molding compounds based on styrene polymers, which as a flame retardant contain an organic bromine compound of the general formula
hvor X er alifatiske, aromatiske, cykloalifatiske eller aralifa-tiske rester med 1-12 karbonatomer, og hvor n er 0 eller 1. where X are aliphatic, aromatic, cycloaliphatic or araliphatic residues with 1-12 carbon atoms, and where n is 0 or 1.
Hos drivmiddelholdige, partikkelformige styrenpolymerisater .som skal forarbeides til skumstoffer, er det særlig viktig med en effektiv flammebeskyttelse. For å oppnå dette må det anvendes forholdsvis meget av bromforbindelsen når denne er fordelt homogent i styrenpolymerisatet. Hvis man vil fremstille styrenpolymerisatet ved polymerisering av monomerene. i vandig suspensjon i nærvær av bromforbindelsene i henhold til tysk søknad nr. With propellant-containing, particulate styrene polymers that are to be processed into foams, it is particularly important to have effective flame protection. To achieve this, a relatively large amount of the bromine compound must be used when this is distributed homogeneously in the styrene polymer. If you want to produce the styrene polymer by polymerizing the monomers. in aqueous suspension in the presence of the bromine compounds according to German application no.
P 25 45 223, så kan det ved anvendelse av større mengder bromforbindelse opptre uønskede reguleringseffekter, som har uheldig inn-flytelse på styrenpolymerisatenes egenskaper. P 25 45 223, when larger amounts of bromine compound are used, unwanted regulation effects can occur, which have an adverse effect on the properties of the styrene polymers.
Oppgave .for foreliggende oppfinnelse var således å utvik-le en effektiv flammebeskyttelse for drivmiddelholdige, partikkelformige styrenpolymerisater, på basis av de organiske bromforbindelser i henhold til tysk søknad nr. P 25 45 223. The task of the present invention was thus to develop an effective flame protection for propellant-containing, particulate styrene polymers, based on the organic bromine compounds according to German application no. P 25 45 223.
Denne oppgave løses i'henhold til oppfinnelsen ved at man- bringer den organiske bromforbindelse på overflaten av partiklene. According to the invention, this task is solved by placing the organic bromine compound on the surface of the particles.
Som styrenpolymerisater kommer polystyren og kopolymerd-sater av styren med opp til 50 vekt% komonomerer på tale. Komono merer kan f.eks. være a-metylstyren, akrylnitril så vel som estere av akryl- eller metakrylsyre av alkoholer med 1-8 karbonatomer. Styrene polymers include polystyrene and copolymers of styrene with up to 50% by weight of comonomers. Komono more can e.g. be α-methylstyrene, acrylonitrile as well as esters of acrylic or methacrylic acid of alcohols with 1-8 carbon atoms.
I betraktning kommer også slagfastmodifiserte styrenpolymerisater som er fremstilt ved polymerisering av styren, eventuelt sammen med akrylnitril, i nærvær av kautsjukaktige butadienpolymerisater.Formmassene inneholder som drivmiddel fortrinnsvis flytende eller gassformige organiske forbindelser, som ikke løser polymerisatet og hvis kokepunkt ligger under polymerisatets mykningspunkt, f.eks. alifatiske eller cykloalifatiske hydrokarboner, f.eks. propan, butan, pentan, heksan, heptan, cykloheksan, eller haiogénhydrogen-forbindelser, f.eks. metylklorid, diklordifluormetan eller 1,2,2-trifluor-1,1,2-trikloretan. Det er fordelaktig å anvende 3-10 vekt%, regnet på styrenpolymerisatet av drivmiddel. Med hensyn til ytterligere detaljer henvises det til kunststoffhåndboken "Polystyrol", Carl-Hanser-Verlag, bind V, kapitel 6 "Polystyrol-Schaumstoffe". Also taken into consideration are impact-resistant modified styrene polymers that are produced by polymerizing styrene, possibly together with acrylonitrile, in the presence of rubbery butadiene polymers. The molding compounds preferably contain as propellant liquid or gaseous organic compounds, which do not dissolve the polymer and whose boiling point is below the softening point of the polymer, e.g. e.g. aliphatic or cycloaliphatic hydrocarbons, e.g. propane, butane, pentane, hexane, heptane, cyclohexane, or halogen hydrogen compounds, e.g. methyl chloride, dichlorodifluoromethane or 1,2,2-trifluoro-1,1,2-trichloroethane. It is advantageous to use 3-10% by weight, calculated on the styrene polymer of propellant. With regard to further details, reference is made to the plastics handbook "Polystyrol", Carl-Hanser-Verlag, volume V, chapter 6 "Polystyrol-Schaumstoffe".
De organiske bromforbindelser som i henhold til oppfinnelsen skal anvendes som flammebeskyttelsesmidler, er derivater av tiadiazol. De skal fortrinnsvis inneholde mer enn 40 vekt% brom. Særlig egnet er følgende bromforbindelser-.. og The organic bromine compounds which according to the invention are to be used as flame retardants are derivatives of thiadiazole. They should preferably contain more than 40% by weight of bromine. Particularly suitable are the following bromine compounds-.. and
Formmassene foreligger i partikkelform, hvorved par-tikkelstørrelsen fordelaktig er 0,1-6,0 mm, særlig 0,4-3 mm. De organiske bromforbindelser påføres fortrinnsvis i mengder av 0,05-1, særlig 0,1-0,5 vekt%, regnet på de drivmiddelholdige styrenpolymerisater, på overflaten av partiklene, fortrinnsvis ved at det legges på et sjikt. I mange tilfeller kan det- være hensiktsmessig å belegge de ekspanderbare partikler ytterligere med vanlige midler som vil forkorte den tid det tar før de kan tas ut aj formen, eksempelvis med glycerolmonostearat eller med uretaner. The molding compounds are available in particle form, whereby the particle size is advantageously 0.1-6.0 mm, especially 0.4-3 mm. The organic bromine compounds are preferably applied in quantities of 0.05-1, in particular 0.1-0.5% by weight, calculated on the propellant-containing styrene polymers, on the surface of the particles, preferably by applying a layer. In many cases, it may be appropriate to further coat the expandable particles with common means that will shorten the time it takes before they can be taken out of the mold, for example with glycerol monostearate or with urethanes.
For å forhindre en sammenbakning eller klebning av de belagte partikler ved den videre forarbeidelse er det fordelaktig å påføre, i tillegg til bromforbindelsene, også antiklebemidler på partiklene. Særlig egnet for dette formål er findelt kiselsyre, som fortrinnsvis anvendes i mengder av 0,005-0,1 vekt%, regnet på de drivmiddelholdige styrenpolymerisater. In order to prevent caking or sticking of the coated particles during further processing, it is advantageous to apply, in addition to the bromine compounds, also anti-adhesive agents to the particles. Particularly suitable for this purpose is finely divided silicic acid, which is preferably used in quantities of 0.005-0.1% by weight, calculated on the propellant-containing styrene polymers.
Som kiselsyre anvendes hensiktsmessig et findelt produkt som er fremstillet av silisiumtetraklorid i knallgassflamme. As silicic acid, a finely divided product is suitably used which is made from silicon tetrachloride in a bright gas flame.
Den midlere partikkelstørrelse for kiselsyren ligger fortrinnsvis mellom 5 og 40^um og dens spesifikke overflate , målt i henhold til BET-metoden (kfr. J. Am. Chem. Soc. 60, s. 309 (1938)) mellom The average particle size of the silicic acid is preferably between 5 and 40 µm and its specific surface area, measured according to the BET method (cf. J. Am. Chem. Soc. 60, p. 309 (1938)) between
2 50 og 400 m /g. 2 50 and 400 m /g.
Kiselsyre har den fordel at de .organiske bromforbindel-sers flammehemmende effekt ikke influeres på uheldig måte. Man kan imidlertid prinsipielt også anvende andre kjente antiklebemidler, f.eks. sinkstearat. Silicic acid has the advantage that the flame-retardant effect of the organic bromine compounds is not adversely affected. However, you can in principle also use other known anti-adhesive agents, e.g. zinc stearate.
Hos formmassene skal nærvær av andre, kjente flammebeskyttelsesmidler eller synergister ikke være utelukket. Formmassene kan også inneholde andre komponenter, f.eks. fyllstoffer, far-vepigmenter, slippmidler, antistatika, aldringsbéskyttelsesmidler, stabilisatorer eller slike forbindelser som befordrer skumdannelse. With the molding compounds, the presence of other known flame retardants or synergists must not be excluded. The molding compounds can also contain other components, e.g. fillers, color pigments, release agents, antistatic agents, ageing protection agents, stabilizers or such compounds which promote foaming.
Formmassene i henhold til oppfinnelsen kan anvendes for fremstilling av selvslukkende skumstoffer med en romvekt på 5-100, fortrinnsvis 10-50 g/liOppskummingen skjer ved ekspansjon av drivmidlene ved forhøyede temperaturer, f.eks. ved sintring i for-mer eller ved ekstrudering. The molding compounds according to the invention can be used for the production of self-extinguishing foams with a bulk density of 5-100, preferably 10-50 g/l. The foaming takes place by expansion of the propellants at elevated temperatures, e.g. by sintering in molds or by extrusion.
De i det følgende 'eksempel angitte prosenter angir vekt. The percentages given in the following example indicate weight.
EKSEMPELEXAMPLE
Et ekspanderbart polystyrengranulat med et innhold av 6,4 % pentan og en midlere partikkeldiameter på 1,5 mm ble i 3 mi-. nutter blandet med forskjellige mengder av pulverformig bis-tri-brom-metyl-tiadiazol ved énkel kjøring i trommel i en skovlemikser. I forsøkene 3 og 4 ble det som antiklebemiddel anvendt 0,025 % kiselsyre med en midlere partikkelstørrelse på 12^um.. An expandable polystyrene granulate with a content of 6.4% pentane and an average particle diameter of 1.5 mm was in 3 mi-. nuts mixed with different amounts of powdered bis-tri-bromo-methyl-thiadiazole by single drum running in a paddle mixer. In experiments 3 and 4, 0.025% silicic acid with an average particle size of 12 µm was used as an anti-adhesive agent.
Det ble målt:It was measured:
Klebning:Klumpedannélse ved f or-skumming , andel som holdes til-bake på en sikt med maskevidde 2 cm.. Etterbrenntid: Den tid som en 2 cm tykk skumstoffplate, bøyd 45°, etter antennelse ved nedre kant med lysen-de jordgassflamme gjennomsnittlig trenger før flammen slukner (middelverdier av minst 20 Adhesion: Lump formation during pre-foaming, proportion that is retained on a sieve with a mesh size of 2 cm. Post-burn time: The time that a 2 cm thick sheet of foam material, bent 45°, after ignition at the lower edge with a bright natural gas flame averages need before the flame goes out (mean values of at least 20
Claims (4)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19762655808 DE2655808A1 (en) | 1976-12-09 | 1976-12-09 | Flameproofing blowing agent-contg. styrene! polymer particles - by coating with bis:tri:bromo-methyl thiadiazole or derivs. and anti-adhesives |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NO774215L true NO774215L (en) | 1978-06-12 |
Family
ID=5995090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO774215A NO774215L (en) | 1976-12-09 | 1977-12-08 | PARTICULAR SHAPES, SELF-EXTINGUISHING THERMOPLASTIC MOLDS |
Country Status (6)
| Country | Link |
|---|---|
| DE (1) | DE2655808A1 (en) |
| DK (1) | DK546977A (en) |
| GR (1) | GR66052B (en) |
| NO (1) | NO774215L (en) |
| TR (1) | TR19414A (en) |
| ZA (1) | ZA777139B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4218511A (en) * | 1977-12-21 | 1980-08-19 | Basf Aktiengesellschaft | Self-extinguishing, expandable styrene polymers |
| DE2809979A1 (en) * | 1978-03-08 | 1979-09-20 | Basf Ag | FLAME-RESISTANT EXPANDING AGENT CONTAINING STYRENE POLYMERISATES AND THEIR USE FOR THE MANUFACTURING OF FOAMS |
| DE4009897A1 (en) * | 1990-03-28 | 1991-10-02 | Basf Ag | FINE-PIECE EXPANDABLE STYRENE POLYMERS |
| DE4024871A1 (en) * | 1990-08-06 | 1992-02-13 | Basf Ag | PERLAMABLE ANTISTATIC EXPANDABLE STYRENE POLYMERISES |
-
1976
- 1976-12-09 DE DE19762655808 patent/DE2655808A1/en not_active Withdrawn
-
1977
- 1977-10-17 GR GR54593A patent/GR66052B/el unknown
- 1977-12-01 ZA ZA00777139A patent/ZA777139B/en unknown
- 1977-12-06 TR TR19414A patent/TR19414A/en unknown
- 1977-12-08 DK DK546977A patent/DK546977A/en unknown
- 1977-12-08 NO NO774215A patent/NO774215L/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DK546977A (en) | 1978-06-10 |
| GR66052B (en) | 1981-01-14 |
| TR19414A (en) | 1979-03-01 |
| DE2655808A1 (en) | 1978-06-15 |
| ZA777139B (en) | 1979-08-29 |
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