MX168932B - COATING COMPOSITIONS - Google Patents

COATING COMPOSITIONS

Info

Publication number
MX168932B
MX168932B MX461286A MX461286A MX168932B MX 168932 B MX168932 B MX 168932B MX 461286 A MX461286 A MX 461286A MX 461286 A MX461286 A MX 461286A MX 168932 B MX168932 B MX 168932B
Authority
MX
Mexico
Prior art keywords
percent
weight based
methylolated
amino
highly
Prior art date
Application number
MX461286A
Other languages
Spanish (es)
Inventor
Richard Paul Redman
Original Assignee
Ici Plc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from GB858530645A external-priority patent/GB8530645D0/en
Application filed by Ici Plc filed Critical Ici Plc
Publication of MX168932B publication Critical patent/MX168932B/en

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Abstract

La presente invención se refiere a una composición de revestimiento acuosa, adecuada para aplicación a un substrato catódico mediante electrodeposición, la cual comprende una dispersión en un medio acuoso en la presencia de un ácido de ionización de amina de partículas catiónicamente estabilizadas, que consiste de: (1) de 50 a 84 por ciento por peso en base al peso combinado de (1),(2) y (3) de un producto de reacción amino-epóxido; (2) de 15 a 45 por ciento por peso en base a los pesos combinados de (1),(2) y (3) de un poliisocianato bloqueado como un agente de entrelazamiento; y (3) de 1 a 12 por ciento por peso en base a los pesos combinados de (1),(2) y (3) de una resina de melaminaformaldehído altamente metilolada y altamente alquilada, en donde un promedio de cuando menos 4.0 de los átomos de hidrógeno reactivos por anillo de triazina están metilolados, cuando menos 3.5 de estos grupos metilos estan alquilados y los grupos de aquilación se relacionan de alquilo con de 4 a 10 átomos de carbono, la resina es prácticamente no reactiva con el producto (1) de reacción amino-epóxido, a temperaturas por debajo de 190 grados c.The present invention relates to an aqueous coating composition, suitable for application to a cathodic substrate by electrodeposition, which comprises a dispersion in an aqueous medium in the presence of an amine ionizing acid of cationically stabilized particles, consisting of: (1) 50 to 84 percent by weight based on the combined weight of (1), (2) and (3) of an amino epoxide reaction product; (2) 15 to 45 percent by weight based on the combined weights of (1), (2) and (3) of a blocked polyisocyanate as a crosslinking agent; and (3) from 1 to 12 percent by weight based on the combined weights of (1), (2) and (3) of a highly methylolated and highly alkylated melamine formaldehyde resin, where an average of at least 4.0 of the reactive hydrogen atoms per triazine ring are methylolated, at least 3.5 of these methyl groups are alkylated and the alkylation groups are related to alkyl with 4 to 10 carbon atoms, the resin is practically non-reactive with the product (1 ) of amino-epoxide reaction, at temperatures below 190 degrees c.

MX461286A 1985-12-12 1986-12-10 COATING COMPOSITIONS MX168932B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB858530645A GB8530645D0 (en) 1985-12-12 1985-12-12 Coating compositions
GB8626293A GB2185031B (en) 1985-12-12 1986-11-04 Coating compositions

Publications (1)

Publication Number Publication Date
MX168932B true MX168932B (en) 1993-06-15

Family

ID=26290109

Family Applications (1)

Application Number Title Priority Date Filing Date
MX461286A MX168932B (en) 1985-12-12 1986-12-10 COATING COMPOSITIONS

Country Status (2)

Country Link
BR (1) BR8605944A (en)
MX (1) MX168932B (en)

Also Published As

Publication number Publication date
BR8605944A (en) 1987-09-15

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