A polyethylene imine membrane which has been cross-linked by heat treating at 100. degree. C. -200. degree. C. for 3-20 minutes may be used to dewater isopropanol or methyl ethyl ketone/toluene mixtures.
John Reale - Wappingers Falls NY Craig R. Bartels - Wappingers Falls NY
Assignee:
Texaco Inc. - White Plains NY
International Classification:
B01D 1300
US Classification:
210640
Abstract:
Concentration of aqueous solutions of isopropanol may be effected by a composite membrane including a glutaraldehyde cross-linked polyvinyl alcohol bonded to a porous layer of polysulfone on a polyester backing.
A polyethylenimine membrane which has been cross-linked by heat treating at 100. degree. C. -200. degree. C. for 3-20 minutes may be used to dewater isopropanol or methyl ethyl ketone/toluene mixtures.
Craig R. Bartels - Wappingers Falls NY Tansukhlal G. Dorawala - Wappingers Falls NY Michael T. Stephenson - Katy TX Mordechai Pasternak - Spring Valley NY John Reale - Wappingers Falls NY
Assignee:
Texaco Inc. - White Plains NY
International Classification:
B01D 1300 C02F 140
US Classification:
210651
Abstract:
Aqueous liquor containing immiscible hydrocarbon liquid, such as produced water from an offshore petroleum drilling platform, is treated by gravity separation, skimming, and nanofiltration.
Craig R. Bartels - Wappingers Falls NY John Reale - Wappingers Falls NY
Assignee:
Texaco Inc. - White Plains NY
International Classification:
B01D 6900
US Classification:
210490
Abstract:
Concentration of aqueous solutions of ethylene glycol may be effected by a composite membrane including a glutaraldehyde-crosslinked polyvinyl alcohol bonded to a porous layer of polysulfone on a polyester backing.
Craig R. Bartels - Wappingers Falls NY John Reale - Wappingers Falls NY
Assignee:
Texaco Inc. - White Plains NY
International Classification:
B01D 6158
US Classification:
210639
Abstract:
Water-soluble organic electrolytes, such as anions of lower carboxylic acids in aqueous solution at low pH, are removed by raising the pH and subjecting the resultant charge liquid to nanofiltration.
William R. White - Wappingers Falls NY John Reale - Wappingers Falls NY
Assignee:
Texaco Inc. - DE
International Classification:
C10M 148
US Classification:
252 327E
Abstract:
Described are low ash, low phosphorus motor oils having improved oxidation stability as a result of the addition thereto of synergistic amounts of a dialkyldiphenylamine antioxidant and of a sulfurized polyolefin. The synergism between the two additives compensates for the decreased amounts of phosphorus in the form of zinc dithiophosphate such that the oils retain an SE quality rating.
"We have more of our members who are moving into apartments right here in downtown, taking the light rail to work," said John Reale, Managing Director for Station Houston. "You see people on the streets grabbing lunch or coffee. It's cool."