Patrisha A Doscher

50985949, Mar 24, 1992

Oct 30, 1990

7/605630

Patrisha A. Doscher - Kent WA

The Boeing Company - Seattle WA

B08B 308
CO9D 902
C11D 750

252162

Solvents having superior cleaning power include at least one polar compound having at least one strongly electro- negative oxygen, such as ethylene diacetate, and at least one alicyclic carbonate, such as ethylene carbonate, with or without other additives. The solvents exhibit low toxicity; are nonflammable, pH neutral, essentially nonvolatile, and aprotic; and have other chemical and physical properties that reduce the risk of exposing the user unnecessarily to hazardous conditions. Solvents comprising ethylene carbonate, ethylene diacetate, and, optionally, triethanolamine (TEA) and/or N-methyl-2-pyrrolidone (NMP) are superior cleaners for a wide range of residues and are environmentally and physiologically safe, and may be diluted with water for cleaning tasks that are insensitive to corrosion.

56907478, Nov 25, 1997

Jun 5, 1995

8/465644

Patrisha A. Doscher - Kent WA

The Boeing Company - Seattle WA

B08B 312
C23G 502

134 1

Liquid solvents having superior cleaning power include at least one polar compound having at least one strongly electronegative oxygen, such as ethylene diacetate, and at least one alicyclic carbonate, such as ethylene carbonate, with or without other additives. The solvents exhibit low toxicity; are nonflammable, pH neutral, essentially nonvolatile, and aprotic; and have other chemical and physical properties that reduce the risk of exposing the user unnecessarily to hazardous conditions. Solvents comprising ethylene carbonate, ethylene diacetate, and, optionally, triethanolamine and/or N-methyl-2-pyrrolidone are superior cleaners for a wide range of residues and are environmentally and physiologically safe.

50079697, Apr 16, 1991

May 20, 1988

7/196903

Patrisha A. Doscher - Kent WA

The Boeing Company - Seattle WA

C09D 900
C11D 726
C11D 750
C23G 502

134 38

Liquid solvent mixtures having superior cleaning power, especially for photoresist and fingernail enamel, include polar compounds, such as ethylene diacetate, and alicyclic carbonates, such as ethylene carbonate. The solvent mixtures exhibit a low toxicity and have chemical and physical properties that reduce the risk of exposing the user to other unnecessary hazardous conditions.