Method for treating shaped article made of polypropylene resin b

Details Method for treating shaped article made of polypropylene resin b Method for treating shaped article made of polypropylene resin b

1994-07-05

1995-11-21

Lusignan, Michael

Coating processes

With pretreatment of the base

Organic base

25217414, 252180, 427444, B05D 300, B05D 312

Patent

active

054685176

ABSTRACT:
There is provided a method for treating a shaped article made of a polypropylene resin before coating, comprising the step of degreasing and deterging a surface of the shaped article with an aqueous alkaline solution composed of (a) 5-50 g/liter of a builder and (b) 1-10 g/liter of an ethylene oxide adduct of aryl- or aralkyl-substituted phenol at 50.degree.-70.degree. C., the ethylene oxide adduct of aryl- or aralkyl-substituted phenol having a hydrophilic-lipophilic balance (HLB) of 8 to less than 12.

REFERENCES:
patent: 4333771 (1982-06-01), Altenschopfer et al.
patent: 4737314 (1988-04-01), Yokoyama et al.

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