Abstract: A hurricane protection system comprises a rigid sheet in a rectangular configuration positioned within a window opening with an upper edge, a lower edge, and parallel side edges. A plurality of fixed retention mechanisms are secured to the sheet adjacent to the lower edge. Each fixed retention mechanism has a plate secured to the sheet and a downwardly extending finger with a lower end positioned in an associated hole and an upper end secured to the plate. A plurality of supplemental retention mechanisms are secured to the sheet adjacent to the upper and side edges. Each of the supplemental retention mechanisms include a J-shaped finger with a short leg and a long leg terminating in a free end reciprocal between a locked orientation within an associated hole and unlocked orientation out of, but aligned with, an associated hole. Each of the supplemental retention mechanisms include a bracket with a central face attached to the sheet.

Abstract: Ether disulfonates or mixtures of ether monosulfonates and ether disulfonates are disclosed as useful surfactants in the recovery of oil.

Abstract: An ether sulfinate/sulfonate or disulfonate having the following formula: ##STR1## wherein: R is a hydrocarbon group having from about 6 to about 24 carbon atoms,Y is SO.sub.2 M or SO.sub.3 M,Z is hydrogen or a methyl group, andM is an alkali metal, alkylammonium or ammonium cation and mixtures of each of said sulfinate/sulfonate and said disulfonate with an ether monosulfonate having the following formula:ROCH.sub.2 CH(Z)CH.sub.2 SO.sub.3 Mwherein:R is a hydrocarbon group having from about 6 to about 24 carbon atoms,Z is hydrogen or a methyl group, andM is an alkali metal, alkylammonium or ammonium cation.

Abstract: The present invention discloses novel aqueous olefin sulfonate compositions containing 50 percent or less of water and which can be conducted through piping making it practical to transport them in bulk containers over considerable distances. The compositions are useful to produce novel detergent concentrates which have excellent "anti-gel" and "body" characteristics. The compositions of the invention contain carboxylic acid salts in addition to the sulfonic acid salts. A preferred carboxylic acid salt is sodium formate.