Patent ID: 8021476
Filing Date: 2011-09-20
Classification: C04B

Abstract:
1. Gypsum mortar for the manufacture of sheets for coatings with a plaster cast system with expanded vermiculite and enhanced with citric acid and tartaric acid especially used for fire-resistant applications and for thermal and acoustic insulation by means of manual application or by an applicator machine consisting essentially of: A) from 40% to 70% of calcium sulphate by weight; B) from 40% to 70% of laminated expanded vermiculite by weight; C) from 0.05% to 0.3% of citric acid by weight; D) from 0.05% to 1% of tartaric acid by weight; E) from 0.01% to 0.5% of copper sulphate by weight; F) from 0.01% to 0.5% of potassium or sodium citrate by weight; and G) a sufficient amount of water to complete 1000 ml, depending on the use of the proportion based on the intended use in each case.