METHOD FOR PRODUCTION OF HIGH-IMPACT POLYSTYRENE Russian patent published in 2005 - IPC

Abstract RU 2248376 C2

FIELD: high-impact polystyrene.

SUBSTANCE: high-impact polystyrene is obtained by bulk prepolymerization of elastomer dissolved in styrene in presence of polymerization initiator and molecular weight adjuster while controlling of polymerization conversion conditions. Polymerization is finished in suspension in presence of polymerization initiator. In range of 19-32 % conversion degree ratio of initial prepolymer viscosity Kix

to the same at 19-23 % conversion degree is adjusted to 50-160; ratio of finish prepolymer viscosity Kfx

to the same at 23-32 % is adjusted to 105-350; and ratio Kix

/Kfx

is 1.35-3.50. As elastomer mixture to be polymerized includes homopolybutadiene or mixture of homopolybutadiene with butadiene-styrene copolymer, containing not less than 70 mass % (preferably 73-78 mass %) of homopolybutadiene.

EFFECT: high-impact polystyrene with crack resistance under stresses and in tensiometrically active media.

3 cl, 14 ex, 1 tbl

Similar patents RU2248376C2

Title	Year	Author	Number
PROCESS FOR PRODUCING CRACKING-RESISTANT AND IMPACT-RESISTANT POLYSTYRENE	2005	Rupyshev Vladimir Gennad'Evich Kleptsova Larisa Gennad'Evna Ballova Galina Dmitrievna Vinogradskij Vadim Olegovich	RU2294941C2
METHOD FOR ISOLATION OF BEADS OF STYRENE (CO)POLYMERS	1990	Ballova G.D. Derjuzhov Ju.M. Il'In M.I. Ivanov V.A. Rozhavskij M.G. Rupyshev V.G. Pykhtin V.A. Rol'Nik M.D. Potemkin S.F.	RU2061702C1
	0		SU443875A1
PROCESS FOR PRODUCING TRANSPARENT IMPACT RESISTANT COPOLYMER	0	Kudryavtseva Taisiya Vasilevna Egorova Ekaterina Ivanovna Shamina Valentina Pavlovna Vylegzhanina Klara Alekseevna Stepanova Vera Nikolaevna Sadikov Boris Georgievich Manusevich Elena Efimovna Bubnova Anastasiya Sergeevna	SU1002304A1
METHOD OF OBTAINING SHOCK-RESISTANCE POLYSTYRENE	1980	Gorfunkel' Ju.M. Khokhlov V.A. Tarkova E.M. Ginzburg L.I. Kainova G.G. Konsetov V.V. Filimonova E.N. Rupyshev V.G. Egorova E.I. Kravchenko B.V. Il'Chenko V.N.	SU860474A1
METHOD OF PREPARING VINYL AROMATIC RUBBER-REINFORCED POLYMERS	1997	Luka Monti Dzhuzeppe Roman'Oli	RU2142475C1
METHOD FOR SYNTHESIS OF SHOCK RESISTANT VINYLAROMATIC (CO)	2005	K'Etstsi Leonardo Monti Luka Longo Al'Do	RU2401282C2
PROCESS FOR PRODUCING IMPACT-RESISTANT,WEATHER- AND FROST-PROOF STYRENE COPOLYMER	0	Ballova G.D. Lishanskij I.S. Karlin A.V. Maladzyanova L.F. Nosaev G.A. Egorova E.I. Karmakova V.G. Aleksandrova L.M. Vylegzhanina K.A. Lobkov V.D. Kolokoltseva I.G.	SU803413A1
METHOD OF PRODUCING GRAFT COPOLYMERS	0	Zhak Delsart	SU703025A3
METHOD FOR PRODUCTION OF HIGH-IMPACT POLYSTYRENE	1990	Ballova G.D. Rupyshev V.G. Nikitin Ju.V. Rozhavskij M.G. Burdejnaja T.A. Demidova V.A. Alekseeva L.V. Amosov V.V. Rumjantsev S.G. Belomutskaja O.K.	SU1818828A1

RU 2 248 376 C2

Authors

Potemkin S.F.

Dates

2005-03-20—Published

2003-01-29—Filed