Process for the manufacturing of slabs or blocks of conglomerate of stone granulate and polyester resin

A method of manufacturing an article that resists yellowing through ultraviolet light, the article in a form of one of a slab and a block, the method comprising the steps of:

• preparing an initial mixture of a binder resin and a stone or stone-like granulate material, the granulate material comprising a selected granulometry;
• depositing the initial mixture on one of a temporary support and a mould, the one of a temporary support and mould comprising dimensions of a slab or block;
• vacuum compressing the deposited mixture while applying a vibratory motion at a pre-established frequency;
• and
• hardening the binder resin of the vacuum compressed mixture at a temperature ranging from 80-180° C. so as to form the slab or block,
• wherein the binder resin comprises a polyester resin that is ultraviolet light resistant, lacks a reactive solvent, and is formed by reacting at least one epoxidized triglyceride and a carboxylic anhydride comprising 4-methyl-1,2-cyclohexyldicarboxylic anhydride or a mixture of 4-methyl-1,2-cyclohexyldicarboxylic and 3-methyl-1,2-cyclohexyldicarboxylic anhydrides, the at least one epoxidised triglyceride comprising epoxidised triglycerides from linseed oil, and
• wherein the formed slab or block does not yellow after exposure to UV rays for 500 hours.