Composición estabilizadora para sellantes de polímero modificado con sililo

• Main Authors: DI RISIO, Antonio, BATTISTI, Andrea, GRASSINI, David Pietro, DESRATS, Jean-Yves, KANOUNI, Mouhcine
• Format: Patent
• Language: Spanish
• Published: 29.12.2023
• Subjects: ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; ADHESIVES; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; DYES; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; POLISHES; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; USE OF MATERIALS AS ADHESIVES

La invención se refiere a composiciones estabilizadoras que comprenden al menos un absorbente UV de oxalanilida y/o al menos un absorbente UV de (2-hidroxifenil)-s-triazina, y al menos un fotoestabilizador de amina impedida (HALS) oligomérico, que opcionalmente comprende además al menos un antioxidante fenólico, al menos un diluyente líquido y/u otros componentes. Dichas composiciones estabilizadoras se utilizan preferentemente en sellantes o adhesivos basados en polímeros modificados con sililo (SMP). La invención también se refiere a una composición polimérica basada en polímeros modificados con sililo (SMP) que comprende la nueva combinación estabilizadora de absorbente UV de oxalanilida y/o absorbente UV de (2-hidroxifenil)-s-triazina y fotoestabilizador de amina impedida (HALS) oligomérico, que opcionalmente comprende además un antioxidante fenólico y un diluyente líquido y/u otros componentes. The invention is directed to stabilizer compositions comprising at least one oxalanilide UV absorber and/or at least one (2-hydroxyphenyl)-s-triazine UV absorber, and at least one oligomeric hindered amine light stabilizer (HALS), optionally further comprising at least one phenolic antioxidant, at least one liquid diluent and/or further components. Said stabilizer compositions are preferably used in sealants or adhesives based on silyl-modified polymers (SMP). The invention also deals with a polymer composition based on silyl-modified polymers (SMP) comprising the new stabilizer combination of oxalanilide UV absorber and/or (2-hydroxyphenyl)-s-triazine UV absorber, and oligomeric hindered amine light stabilizer (HALS), optionally further comprising phenolic antioxidant and liquid diluent and/or further components.