Abstract:
Procedimiento para la producción de resinas aminoplásticas que portan grupos sililo, caracterizado porque - en una primera etapa se eterifica o transeterifica al menos una resina aminoplástica opcionalmente eterificada (A) con al menos un alcohol insaturado (B) que porta al menos un doble enlace C>=C y al menos un grupo hidroxilo, y - a continuación se adiciona a al menos una parte de los dobles enlaces C>=C así unidos a la resina aminoplástica mediante una hidrosililación al menos un compuesto de silano (C) que porta al menos un enlace Si-H.
Abstract:
An aqueous polishing composition comprising (A) at least one water-soluble or water-dispersible compound selected from the group consisting of N-substituted diazenium dioxides and N'-hydroxy-diazenium oxide salts; and (B) at least one type of abrasive particles; the use of the compounds (A) for manufacturing electrical, mechanical and optical devices and a process for polishing substrate materials for electrical, mechanical and optical devices making use of the aqueous polishing composition.
Abstract:
An aqueous polishing composition comprising (A) at least one water-soluble or water-dispersible compound selected from the group consisting of N-substituted diazenium dioxides and N'-hydroxy-diazenium oxide salts; and (B) at least one type of abrasive particles; the use of the compounds (A) for manufacturing electrical, mechanical and optical devices and a process for polishing substrate materials for electrical, mechanical and optical devices making use of the aqueous polishing composition.