AN AGENT FOR THE TREATMENT OF TOP-COAT PAINT FILMS TO IMPART STAIN RESISTANCE AND A METHOD FOR THE TREATMENT OF TOP-COAT PAINT FILMS TO IMPART STAIN-RESISTANCE

摘要

To provide an agent for the treatment of a top¬ coat paint film to impart stain resistance with which a stain resisting function can be imparted easily to a top-coat paint film which is the outermost paint film irrespective of the type or history of the top-coat paint film, with which a clean paint film is maintained over a long period of time and with which the abovementioned function is retained even when it is shielded from light for long periods of time, and a method for the treatment of a top-coat paint film to impart stain resistance. [Means of Resolution] An agent for the treatment of a top-coat paint film to impart stain resistance which contains (a) from 3 to 10 mass% of a compound which can be represented by the formula (1) which is indicated below or a partial hydrolysis condensate thereof, (b) from 0.01 to 1 mass% of a catalyst with which the aforementioned (a) component can be hydrolyzed, (c) from 0.5 to 3 mass% of an alkylsulf osuccinic acid salt based surfactant and (d) from 86 to 96.49 mass% of an alcohol based solvent which has not more than 3 carbon atoms. Formula (1) R1-(OCH2CH2)n-O-Si(OR2)3 (1) (In this formula R1 is an alkyl group which has from 1 to 6 carbon atoms or a hydrogen atom, R2 is an alkyl group which has from 1 to 6 carbon atoms, and the three R2 may be the same or different. Moreover n is an integer value from 2 to 4. )