Aqueous alkali cleaning compositions

Details Aqueous alkali cleaning compositions Aqueous alkali cleaning compositions

1996-03-19

1998-09-29

Lieberman, Paul

Cleaning compositions for solid surfaces, auxiliary compositions

Cleaning compositions or processes of preparing

For cleaning a specific substrate or removing a specific...

510254, 510255, 510245, 510420, 510421, 510252, C11D 1722, C11D 310, C11D 337, C11D 328

Patent

active

058145885

ABSTRACT:
Aqueous alkali cleaning compositions containing an alkali metal salt, an N-alkyl pyrrolidone derivative, and specific ethylene oxide/propylene oxide block copolymers having molecular weights of from about 1500 to about 2500. Such compositions can be employed as an aqueous concentrate or solution to clean a substrate such as a circuit board, wiring board or metal surface. Specific ethylene oxide/propylene oxide block copolymers protect plastic parts from corrosion by N-alkyl pyrrolidone derivatives without compromising N-alkyl pyrrolidone derivative cleaning ability.

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