PL38488B1 - - Google Patents
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- Publication number
- PL38488B1 PL38488B1 PL38488A PL3848854A PL38488B1 PL 38488 B1 PL38488 B1 PL 38488B1 PL 38488 A PL38488 A PL 38488A PL 3848854 A PL3848854 A PL 3848854A PL 38488 B1 PL38488 B1 PL 38488B1
- Authority
- PL
- Poland
- Prior art keywords
- styrene
- technology
- softening temperature
- hydroxystyrene
- urotropine
- Prior art date
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- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 16
- 238000005516 engineering process Methods 0.000 claims description 4
- XLLXMBCBJGATSP-UHFFFAOYSA-N 2-phenylethenol Chemical compound OC=CC1=CC=CC=C1 XLLXMBCBJGATSP-UHFFFAOYSA-N 0.000 claims description 3
- VKYKSIONXSXAKP-UHFFFAOYSA-N hexamethylenetetramine Chemical compound C1N(C2)CN3CN1CN2C3 VKYKSIONXSXAKP-UHFFFAOYSA-N 0.000 claims description 3
- JESXATFQYMPTNL-UHFFFAOYSA-N mono-hydroxyphenyl-ethylene Natural products OC1=CC=CC=C1C=C JESXATFQYMPTNL-UHFFFAOYSA-N 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 239000007767 bonding agent Substances 0.000 claims 1
- 239000000463 material Substances 0.000 description 3
- 239000004793 Polystyrene Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- -1 aromatic vinyl hydrocarbons Chemical class 0.000 description 2
- 238000007334 copolymerization reaction Methods 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 229920002223 polystyrene Polymers 0.000 description 2
- IGGDKDTUCAWDAN-UHFFFAOYSA-N 1-vinylnaphthalene Chemical compound C1=CC=C2C(C=C)=CC=CC2=C1 IGGDKDTUCAWDAN-UHFFFAOYSA-N 0.000 description 1
- CISIJYCKDJSTMX-UHFFFAOYSA-N 2,2-dichloroethenylbenzene Chemical compound ClC(Cl)=CC1=CC=CC=C1 CISIJYCKDJSTMX-UHFFFAOYSA-N 0.000 description 1
- 235000010299 hexamethylene tetramine Nutrition 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000010517 secondary reaction Methods 0.000 description 1
- 150000003440 styrenes Chemical class 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 125000001424 substituent group Chemical group 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Description
Opublikowano dnia 10 grudnia 1990 r.^ U+ |Ur/-~!j ?'¦•-. ilowego I 6 09 fMJOil POLSKIEJ RZECZYPOSPOLITEJ LUDOWEJ OPIS PATENTOWY Nr 38488 KI. 39 IP^ Politechnika Warszawska (Zaklad Technologii Organicznej I)*) Warszawa, Polska Sposób wytwarzania produktu kopolimeryzacji styrenu o wysokiej temperaturze miekniecia Patent trwa od dnia 16 wrzesnia 1954 r.Polistyren posiada stosunkowo niska tempe¬ rature miekniecia, co w znacznym stopniu ogranicza jego zastosowania praktyczne. W ce¬ lu podwyzszenia temperatury miekniecia sto¬ sowane sa rózne dodatki, miedzy innymi wi- nyloweglowodory aromatyczne, np. winylonaf- talen. Równiez do tego celu stosowane sa po¬ chodne styrenu z podstawnikiem w pierscieniu..Np. dodatek dwuchlorostyrenu do styrenu po¬ zwala na otrzymanie tworzywa o tempera¬ turze miekniecia okolo 112°C.Jednakze tego typu dodatki maja charakter chemiczny analogiczny do styrenu i nie mo¬ ga dawac wtórnych reakcji prowadzacych do polepszenia wlasciwosci tworzywa.Stwierdzono, ze przez polimeryzacje styrenu z niewielka iloscia hydroksystyrenu, a w szcze¬ gólnosci izomeru meta, otrzymuje sie kopoli- *) Wlasciciel patentu oswiadczyl, ze twórca wyna¬ lazku jest (& WlóUzimierz Dahlig. mer nieznacznie rózniacy sie od polistyrenu, który nastepnie poddany wtórnej reakcji ze srodkiem dajacym wiazania metylenowe, np. urotropine, mozna przeprowadzic w polikon- densat o wyzszym punkcie miekniecia od po¬ listyrenu.Przyklad. Kopolimeryzacje 10 g styrenu z 0,2 gm-hydroksystyrenu przeprowadza sie w analogicznych warunkach jak przy polime¬ ryzacji styrenu. Produkt rozdrabnia sie i mie¬ sza z 0,1 g urotropiny i nastepnie na cieplo prasuje. Powstale tworzywo posiada tempera¬ ture miekniecia rzedu 110°C.Analogicznie oznaczona temperatura mieknie¬ cia polistyrenu wynosi okolo 90°C. Proces utwardzania prowadzic mozna w czasie kon¬ cowego etapu formowania ksztaltki, np. przy wtrysku.i PLPublished December 10, 1990 ^ U + | Ur / - ~! J? '¦ • -. ilowego I 6 09 fMJOil OF THE POLISH PEOPLE'S REPUBLIC PATENT DESCRIPTION No. 38488 KI. 39 IP ^ Warsaw University of Technology (Department of Organic Technology I) *) Warsaw, Poland Manufacturing method of styrene copolymerization product with high softening temperature The patent lasts from September 16, 1954. Polystyrene has a relatively low softening temperature, which significantly limits its application practical. Various additives, including aromatic vinyl hydrocarbons, such as vinyl naphthalene, are used to increase the softening temperature. For this purpose also styrene derivatives with a ring substituent are used. addition of dichlorostyrene to styrene makes it possible to obtain a material with a softening temperature of around 112 ° C. However, such additives have a chemical nature analogous to styrene and do not result in secondary reactions leading to the improvement of the properties of the material. It was found that by polymerization of styrene with a small amount of hydroxystyrene, and in particular the meta isomer, a copoly- *) is obtained. The patent owner stated that the inventor is (& WlóZimierz Dahlig. , for example, urotropine, can be converted into a polycondensate with a higher softening point than polyclinrene. Example: Copolymerization of 10 g of styrene with 0.2 gm of hydroxystyrene is carried out under the same conditions as for the polymerization of styrene. It is made with 0.1 g of urotropin and then pressed while warm. The resulting material has a softening temperature of the order of 11 0 ° C. The analogously determined softening temperature of polystyrene is about 90 ° C. The hardening process can be carried out during the final step of the molding of the shape, e.g. during injection
Claims (1)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| PL38488B1 true PL38488B1 (en) | 1955-06-15 |
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