SIZING COMPOSITION FOR MINERAL WOOL BASED ON ALKALI OR ALKALINE-TERROUS METAL SALT OF LIGNOSULFONIC ACID AND A CARBONYL COMPOUND, AND INSULATING PRODUCTS OBTAINED

摘要

The present invention relates to a sizing composition for insulating products based on mineral wool, in particular glass or rock, which comprises - at least one alkaline or alkaline earth metal salt of lignosulfonic acid, and - at at least one carbonyl compound of formula R- [C (O) R 1] x (I) in which: R represents a saturated or unsaturated, linear, branched or cyclic hydrocarbon-based radical, a radical containing one or more aromatic rings consisting of or 6 carbon atoms, a radical containing one or more aromatic heterocycles containing 4 or 5 carbon atoms and an oxygen, nitrogen or sulfur atom, the radical R possibly containing other functional groups, in particular hydroxyl or alkoxy groups , in particular methoxy, - R1 represents a hydrogen atom or a C1-C10 alkyl radical, and - x varies from 1 to 10. It also relates to the mineral fiber-based insulating products obtained and their process of manufacture. we.