SOLVENT COMPOSITION FOR REMOVAL OF STUCK WATER

• Main Authors: KAWAGUCHI KOJI, AMAGISHI KAZUMI, NAGAI KUNIO
• Format: Patent
• Language: English
• Published: 07.01.1997
• Edition: 6
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

PURPOSE: To provide a solvent with high water draining property for removal of stuck water without damaging the ozonosphere by adding polyoxyalkylene- type nonionic surfactants respectively having specified formulas and physical properties in polysiloxanes. CONSTITUTION: Polyoxyalkylene-type nonionic surfactants with 2-10 HLB are contained in polysiloxanes having general formula I (wherein m is an integer of 0-4) or II (wherein n is an integer of 3-6). As the surfactants, surfactants containing polyoxyalkylene chain, e.g. polyoxyalkylene alkylphenol ethers such as polyoxyethylene octylphenol ether, are used. The content of the surfactants is controlled to be 0.01-20.0wt.%. The agent for removal of stuck water has an effect of at least that of fluorocarbon R113. HLB numerically shows the balance of the hydrophilicity and hydrophobicity. That is, HLB = (molecular weight of hydrophilic group parts/molecular weight of a surfactant) × 20.