Physical form Clear, pale brown liquid
Concentration (ISO 3251, 1 h at 150 °C)--------43 – 45%
Iodine colour (DIN EN 1557)--------< 15
Viscosity (DIN 53018, Part 1)-------40 – 80 mPa · s
pH (ISO 976, 10 % solution)------4 – 5
The above information is correct at the time of going to press. It does not
necessarily form part of the product specification.
A detailed product specification is available from your local BASF
Basotronic PVI is a cationic polymer which is used in the electronics industry
in the manufacture of printed circuit boards. It enables the walls of
through-holes to be homogeneously seeded with catalyst after they have
been drilled, which ensures that a uniform layer of electroless copper can
be applied. It can either be applied in the desmearing solution itself or
subsequently in a separate process. It is usually added to concentrated
desmearing solutions at a rate of 1 – 5 g/l.
Basotronic PVI is also used to formulate brightener additives for the electroplating
industry. It acts as a basic brightener in alkaline zinc electrolytes,
and it is particularly effective for improving the adhesion of the plated
metal. It is usually employed at a concentration of 0.1– 2 g/l.