Abstract:
A process for the manufacture of semiconductor devices is provided. The process comprises the chemical-mechanical polishing of a substrate or layer containing at least one III-V material in the presence of a chemical-mechanical polishing composition (Q1) comprising (A) inorganic particles, organic particles, or a mixture or composite thereof, (B) a polymer comprising at least one N-heterocycle, and (M) an aqueous medium and whereas Q1 has a pH of from 1.5 to 4.5.
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.
Abstract:
La presente invención se refiere a copolímeros que se pueden obtener de la copolimerización de radical libre de por lo menos (a) un ácido carboxílico monoetilénicamente insaturado teniendo de 3 a 6 átomos de carbono o su anhídrido con (b) una mezcla de reacción que comprende por lo menos un componente de la fórmula estructural general (I) (ver fórmula (I)) en donde R1, R2, R3, R4, son cada uno independientemente H o alquilo de C1-C4, n y m, son cada uno independientemente un entero de 1 a 100 y R5 es H o metilo, a un proceso para preparar el polímero inventivo y a su uso como un inhibidor de escama.
Abstract:
The present invention relates to copolymers which are obtainable from the free radical copolymerization of at least (a) a monoethylenically unsaturated carboxylic acid having 3 to 6 carbon atoms or the anhydride thereof with (b) a reaction mixture comprising a component of the general structural formula where R1, R2, R3, R4, independently of one another, are H or C1- to C4-alkyl, n and m, independently of one another, are an integer from 1 to 100 and R5 is H or methyl, a process for the preparation of the polymer according to the invention and the use thereof as a scale inhibitor.