LOW-SALT METHOD OF PRODUCING POLYSULPHIDE

FIELD: chemistry.SUBSTANCE: invention relates to a method of producing polysulphide by low-salt method. Method of producing polysulphide involves a step of reacting bis(2-haloalkyl) formal with sodium polysulphide (i) or a combination of sodium and sulfur bisulphide (ii). Reaction is carried out in...

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Bibliographische Detailangaben
Hauptverfasser:	MENZEL, Manfred, BURKHARDT, Volker, KLOBES, Olaf
Format:	Patent
Sprache:	eng ; rus
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC CHEMISTRY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	FIELD: chemistry.SUBSTANCE: invention relates to a method of producing polysulphide by low-salt method. Method of producing polysulphide involves a step of reacting bis(2-haloalkyl) formal with sodium polysulphide (i) or a combination of sodium and sulfur bisulphide (ii). Reaction is carried out in the presence of a prepolymer of formula (I) X-(R-O)-CH-O-(R-O)-CH-(O-R)-X (I), in which Rand Rcan be identical or different, selected from alkane chains containing 2-10 carbon atoms, X is a halogen atom, n, m and p are integers which can be identical or different and have a value in range from 1 to 6. Reaction is carried out in the absence of a dihaloated alkane.EFFECT: invention enables to obtain a polysulphide polymer with low salt content, characterized by good chemical resistance, good compatibility with plasticisers and polar surfaces.11 cl, 8 tbl, 5 ex