Method for preparing a two-component polyurethane lacquer...

Details Method for preparing a two-component polyurethane lacquer... Method for preparing a two-component polyurethane lacquer...

C - Chemistry, Metallurgy

09

D

400/105, 400/741

C09D 7/12 (2006.01) C09D 3/72 (1980.01)

Patent

CA 1155579

ABSTRACT METHOD FOR PREPARING A TWO-COMPONENT POLYURETHANE LACQUER ATOMISABLE FROM A PRESSURISED CONTAINER A method is described for the preparation of a two-component polyurethane lacquer which is atomisable from a pressurised container (e.g. an aerosol can), the lacquer consisting of (i) as basic lacquer components a hydroxyl group-containing copolymer of specified compos- ition, dissolved in an organic solvent, which is contained together with a specified propellant in a first pressur- ised container and (ii) as hardener component, a polyiso- cyanate of specified NCO group content, dissolved in an organic solvent, which is contained together with a speci- fied propellant in a second pressurised container. The ready for-use lacquer is obtained by transferring the contents of one pressurised container into the contents of the other pressurised container and mixing the two components together. The individual components in their separate pressurised containers are storage-stable for at least one year and the mixture of the two components is sprayable for a period of up to 2-3 days.

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