FIELD: chemistry of polymers, chemical technology.
SUBSTANCE: invention relates to a method for synthesis of oligomers used in manufacturing paint and varnish materials by using polyethylene terephthalate waste. Invention proposes the re-esterification reaction (alcoholysis) of vegetable oils and milled polyethylene terephthalate waste with pentaerythritol for a single step at heating and the following polyesterification of the alcoholysis product with phthalic anhydride and maleic anhydride in inert medium in the presence of xylene. The process is carried out up to achievement of acidic number 15 mg of KOH/g, not above, with preparing light product showing good consumers' properties. Synthesized oligomer is used for manufacturing lacquer.
EFFECT: improved method of synthesis.
2 cl, 1 tbl, 5 ex
Title | Year | Author | Number |
---|---|---|---|
METHOD FOR PREPARING ALKYD OLIGOMERS | 2001 |
|
RU2209818C1 |
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RU2348667C1 |
ALKYD RESIN PRODUCTION PROCESS (OPTIONS) AND LACQUER MATERIAL BASED THEREON | 2004 |
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RU2249017C1 |
METHOD OF SYNTHESIS OF ALKYD RESIN (VERSIONS) AND PAINT AND VARNISH MATERIAL BASED ON THEREOF | 2001 |
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RU2200741C1 |
TECHNOLOGICAL COMPLEX FOR MANUFACTURING ALKYD VARNISHES | 2007 |
|
RU2354674C1 |
METHOD OF OBTAINING ALKIDE RESINS | 0 |
|
SU1351946A1 |
METHOD OF PRODUCING ALKYD RESIN | 2011 |
|
RU2480483C1 |
METHOD OF PRODUCING WATER-BORNE ALKYD PENTAPHTHALIC LACQUER VPF-050 | 2016 |
|
RU2650141C2 |
METHOD OF PRODUCING ALKYD RESIN | 2007 |
|
RU2375382C2 |
METHOD OF PRODUCING ALKIDE RESINS | 0 |
|
SU819123A1 |
Authors
Dates
2006-10-20—Published
2005-06-09—Filed