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Machine translation
1. (WO1980002688) METHOD OF OBTAINING POLYMERS OF ACRYLIC SERIES
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1980/002688    International Application No.:    PCT/SU1979/000034
Publication Date: 11.12.1980 International Filing Date: 29.05.1979
IPC:
C08F 20/02 (2006.01)
Applicants:
Inventors:
Priority Data:
SU79/00034 29.05.1979 WO
Title (EN) METHOD OF OBTAINING POLYMERS OF ACRYLIC SERIES
(FR) PROCEDE D"OBTENTION DE POLYMERES ACRYLIQUES
Abstract: front page image
(EN)A method of obtaining polymers of acrylic series comprising polymerization of starting monomers at a total concentration of 40% by weight in the presence of radical initiators. The polymerization is carried out at the temperature of decomposition of the initiator used and is continued until obtaining a gel effect. After that the reaction stock is cooled down to a temperature of glass-transition of the polymer and a conversion degree of 50 to 90%. The thus obtained pre-polymer is then granulated and dried with a heat carrier, for example air, consecutively under regimes of pneumatic transport, cyclone, fluidized bed and filter bed. The method of obtaining polymers of acrylic series can be used in production of water-soluble polymer materials used as surface-active agents for industrial sewage and in the drilling technology, and as flotation agents in ore- and coal-mining industries.
(FR)Un procede d"obtention de polymeres acryliques consiste a polymeriser des monomeres de depart a une concentration de 40% en poids en presence de radicaux initiateurs. La polymerisation est effectuee a la temperature de decomposition de l"initiateur et se poursuit jusqu"a obtention d"un effet de gel. Ensuite, le materiau reactionnel est refroidi et ramene a une temperature de transition du verre du polymere et un degre de conversion de 50 a 90%. Le prepolymere ainsi obtenu est ensuite granule et seche avec un milieu porteur de chaleur, par exemple de l"air, dans des conditions successives de transport pneumatique, cyclone, lit fluidise et lit de filtration. Le procede d"obtention des polymeres acryliques peut etre utilise dans la production de materiaux polymeres solubles dans l"eau utilises comme agents tensioactifs dans les systemes d"egouts industriels et dans la technologie de forage et comme agents de flottaison dans les industries minieres du charbon et des minerais.
Designated States:
Publication Language: Russian (RU)
Filing Language: Russian (RU)