FIELD: chemistry.
SUBSTANCE: invention relates to methods for utilisation of rubber-containing wastes of chemical production. Claimed is method for obtaining mixture of cyclosilanes and plasticiser, based on low-molecular polydimethylsiloxane, in which liquid phase, obtained as result of chemical decomposition of polysiloxane rubber-containing wastes or mixture of polysiloxane rubber-containing and polymer wastes, which represents liquid oligomer mixture, is depolymerised in hermetic reservoir in presence of alkali type catalyst (1-3 wt.p. to quantity of initial raw material) in atmosphere of inert gases under atmospheric pressure or in vacuum from 10-3 to 10-5 kPa at temperature from 50 to 175°C for 6-8 h.
EFFECT: effective recycling of polysiloxane rubber-containing wastes, which results in output of material, widely applied, competitive and marketable in various fields of production.
1 tbl, 5 ex
| Title | Year | Author | Number |
|---|---|---|---|
| FIRE-RESISTANT SILICONE COMPOSITE MATERIAL | 2017 |
|
RU2665509C1 |
| METHOD OF PROCESSING POLYSILOXANE RUBBER-CONTAINING WASTES | 2009 |
|
RU2412219C1 |
| METHOD OF OBTAINING LOW-MOLECULAR DIMETHYL SYLOXANE RUBBER | 0 |
|
SU1735317A1 |
| METHOD OF PRODUCING LINEAR POLYDIMETHYLSILOXANES WITH TERMINAL HYDROXYL GROUPS VIA POLYCONDENSATION OF DIMETHYLDIALKOXYSILANES IN ACTIVE MEDIUM | 2010 |
|
RU2456308C2 |
| ELASTOMERIC POLYESTER URETHANE SILOXANE MATERIAL | 2014 |
|
RU2563878C1 |
| METHOD OF PROCESSING PLASTIC UTILITY REFUSES AND WASTE | 1994 |
|
RU2127296C1 |
| METHOD FOR PROCESSING RUBBER-TECHNICAL ARTICLE WASTE AND OTHER POLYMERIC WASTE | 2004 |
|
RU2274652C2 |
| METHOD OF PROCESSING RUBBER-CURE WASTES OF HIGH-MOLECULAR SILOXANE RUBBERS | 1995 |
|
RU2086577C1 |
| METHOD OF PRODUCING ISOBUTYLENE | 0 |
|
SU1278348A1 |
| METHOD OF PRODUCING LOW-MOLECULAR POLYDIMETHYL METHYL PHENYL SILOXANE RUBBER WITH HYDROXYL END GROUPS | 2019 |
|
RU2715888C1 |
