The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 19, 1978
Filed:
Sep. 29, 1976
Lev Moiseevich Kogan, Leningrad, SU;
Natalya Borisovna Monastyrskaya, Leningrad, SU;
Larisa Mikhailovna Davydova, Leningrad, SU;
Elena Nikolaevna Kropacheva, Leningrad, SU;
Izrail Markovich Belgorodsky, Tolyatti, SU;
Olga Izrailevna Belgorodskaya, Leningrad, SU;
Basia Moiseevna Bolkhovets, Leningrad, SU;
Anatoly Vasilievich Gagin, Tolyatti, SU;
Izmail Vladimirovich Garmonov, Leningrad, SU;
Nikolai Fedorovich Kovalev, Leningrad, SU;
Vladimir Alexandrovich Krol, Leningrad, SU;
Anatoly Ivanovich Lukashov, Moscow, SU;
Valentin Vasilievich Sazykin, Tolyatti, SU;
Vladislav Petrovich Smirnov, Leningrad, SU;
Arkady Samuilovich Estrin, Leningrad, SU;
Jury Alexandrovich Lvov, Leningrad, SU;
Efim Moiseevich Sire, Tolyatti, SU;
Lidia Mikhailovna Pospelova, Tolyatti, SU;
Ljubov Petrovna Bataeva, Tolyatti, SU;
Semen Moiseevich Kavun, Moscow, SU;
Anatoly Sergeevich Lykin, Moskovskaya oblast, SU;
Other;
Abstract
Modified and stabilized synthetic cis-1,4 polyisoprene is a product of chemical interaction between synthetic cis-1,4 polyisoprene containing no less than 95 percent of cis-1,4 units and 0.05 to 1 mass percent of 4-nitrosodiphenylamine. The proposed method of making this product comprises polymerization of isoprene in hydrocarbon solvent in the presence of Ziegler-Natta catalyst, the addition to the polymerization mass of 0.05 to 1 mass percent of, and degassing and drying of the rubber thus produced. The product possesses improved properties, including good stability in the course of storage and machining. Unvulcanized rubber mixed on the basis of this product are marked by a high adhesion strength, whereas the vulcanizates have splendid elastic hysteresis and fatigue characteristics. The quality of the novel product is in no way inferior to that of natural rubber.