composições de pu contendo catalisadores complexados

• Main Authors: NATALIE STEINHAUSEN, ANDRE TE POEL, CHRISTOPH LOSCHEN, HOLGER EICHELMANN, MARCEL BLODAU
• Format: Patent
• Language: Portuguese
• Published: 27.10.2020
• Subjects: ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; ADHESIVES; CHEMISTRY; COMPOSITIONS BASED THEREON; DYES; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; 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 MATERIALS AS ADHESIVES

composições de pu contendo catalisadores complexados. a invenção refere-se a uma composição reticulável contendo polímeros reativos selecionados entre (i) pré-polímeros tendo grupos reativos de nco ou (ii) polímeros que têm grupos reativos de silano, opcionalmente aditivos adicionais e pelo menos um catalisador baseado em metal, em que a composição contém até 10% em peso de substância retardadora selecionada entre (alfa)-hidróxi cetonas cíclicas e/ou trifenóis tendo três grupos oh adjacentes. The invention relates to a crosslinkable composition containing reactive polymers selected from among (i) prepolymers having reactive NCO groups or (ii) polymers which have reactive silane groups, optionally further additives and at least one metal-based catalyst, wherein the composition contains up to 10% by weight of retarding substance selected from among cyclic α-hydroxy ketones and/or triphenols having three adjacent OH groups.