FIELD: polymers, chemical technology.
SUBSTANCE: invention relates to saturated complex polyester that is used as a material for molded containers - bottles, caps and so on. Polyester based on aromatic dicarboxylic acid or its derivative and ethylene glycol comprises from 20 ppm to 10% of nano-dimensional particles of silicon dioxide with average diameter 3-100 nm from polyester mass. The latter is prepared by interaction of sodium silicate with water to form sodium hydrosilicate that is passed through column packed with cation-exchange resin to obtain small-dispersed particles of silicon dioxide with average diameter 0.5-1.0 nm and the following growing crystals of particles up to average diameter 3-100 nm. The turbidity index of polyester in its liquid state is 10.9% or less. Invention can enhance thermal stability and gas impermeability of polyester-base containers.
EFFECT: improved preparing method, valuable properties of polyester.
6 cl, 1 tbl, 10 ex
| Title | Year | Author | Number |
|---|---|---|---|
| COMPOSITIONS AND METHOD FOR IMPROVEMENT OF PET REPEATED HEATING SPEED WITH APPLICATION OF ACTIVATED COAL | 2004 |
|
RU2364610C2 |
| OXYGEN-ACCEPTING MIXTURES | 2008 |
|
RU2516268C2 |
| SINGLE-LAYER LIGHT- AND OXYGEN-DEPENDENT BOTTLE FOR MILK AND DAIRY PRODUCTS AND THE METHOD OF ITS MANUFACTURING (OPTIONS) | 2016 |
|
RU2646672C2 |
| SUSTAINABLE TONER | 2013 |
|
RU2598843C2 |
| TRANSPARENT, COLOURLESS, INFRARED RADIATION-ABSORBING COMPOSITIONS CONTAINING NANOPARTICLES OF NON-STOICHIOMETRIC TUNGSTEN OXIDE | 2010 |
|
RU2506284C2 |
| POLYETHYLENE TEREPHTHALATE MATERIAL FOR SINGLE-LAYER LIGHT- AND OXYGEN-PROOF PACKAGES OF MILK AND DAIRY PRODUCTS (VERSIONS) AND METHOD OF ITS MANUFACTURE (VERSIONS) | 2016 |
|
RU2625870C1 |
| POLYMER MATERIALS | 2012 |
|
RU2609798C2 |
| MODIFYING CONCENTRATE FOR POLYETHYLENE TEREPHTHALATE MATERIAL OF SINGLE-LAYER LIGHT- AND OXYGEN-BARRIER MILK AND MILK PRODUCTS PACKAGES (VERSIONS) AND MANUFACTURING METHOD (VERSIONS) | 2016 |
|
RU2611505C1 |
| POLYMER MATERIALS | 2014 |
|
RU2664935C2 |
| PACKAGE OF OPAQUE BOTTLE TYPE AND METHOD OF ITS PRODUCTION | 2005 |
|
RU2346871C2 |
