Glycerol based unsaturated polyester resins and raw materials therefor

• Main Authors: PICKERING KIM, VERBEEK JOHAN, VILJOEN CARMEN, KING CHRISTOPHER
• Format: Patent
• Language: English
• Published: 31.03.2016
• Subjects: 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

Disclosed is a process for the preparation of glycerolacetylesters, in which acetic acid and glycerol having the molar ratio of less than 2.5 are reacted in the presence of a stannous catalyst (e.g. Fascat 4102 / monobutyltin tris(2-ethylhexanoate)) to produce a mixture of glycerol, mono-, di- and triacetylglycerolester. The amount of tri-ester may be less than 15 mol%, the amount of glycerol may be less than 25 mol%, the amount of monoester may be about 20 mol% or more and the amount of diester may be about 20 mol% or more preferred about 40 mol% or more. Also disclosed is an unsaturated polystyrene comprising polyester comprising more than 5 wt% of the glycerolacetylesters obtained by the above process, and copolymerized into the polymer, said polyester also preferably comprises more than 10 mol% of a poly-acid component in the unsaturated polyester, the poly-acid component being a polymerized residue of fumaric or maleic acid.