PLASTICS PREPARATION AUXILIARY AGENT, PROCESS FOR PRODUCING THE SAME AND PROCESS FOR PREPARING REDUCED MONOMER EMISSION POLYESTER RESIN

摘要

A plastics preparation agent is mainly used to reduce the styrene emission from unsaturated polyester resins. This auxiliary agent is a mixture of compounds having the general formula: BOOC-A-COOB', in which A stands for a groupg having general formula (1), B stands for a group having the formula: CH3(CH2)x (in which x equals 11 to 23) and B' stands for a group produced by removing hydrogen from the rosin molecule. Rosin is a mixture of abietic acid, levopimaric acid, neo-abietic acid and palustrinic acid, with the admixture of long-chain fatty acid amide and/or salts of bivalent metals, long-chain fatty acid esters and/or polyethylene waxes having a molecular mass from 300 to 5,000. An amount from 2 to 50 parts by weight of long-chain fatty acid amide and/or salts of bivalent metals, long-chain fatty acid esters and/or polyethylene waxes having a molecular mass from 300 to 5,000, and if required 0.1 to 7.0 parts by weight of paraffin, in relation to 100 parts by weight of the mixture of compounds having the general formula BOOC-A-COOB', in which A, B, B' have the above-mentioned meaning, are used. Also disclosed is a process for producing unsaturated polyester resins having a reduced styrene emission, particularly suitable for polyester glass laminates, by modifying the resins with the auxiliary agent described above.