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| Number | Title | Issue Date |
| 7008935 | Amine, amide, sulphonamide and carbamate derivatives of benzalmalonic salts and photoprotective cosmetic compositions comprised thereof Stable, topically applicable cosmetic/dermatological sunscreen compositions, well suited for the UV-photoprotection of human skin/keratinous materials, contain a thus effective amount of at least one novel amine, amide, sulphonamide or carbamate substituted benzalma... | 03/07/2006 |
| 6617481 | Process for producing phenyl-alkanes using an adsorptive separation section The present invention is a process for producing phenyl-alkanes by paraffin adsorptive separation followed by paraffin dehydrogenation and then by alkylation of a phenyl compound by a lightly branched olefin. The adsorptive separation step employs a silic... | 09/09/2003 |
| 6118016 | Process for preparing phenoxyphenylsulfonyl halides A process for preparing phenoxyphenylsulfonyl halides, which are useful intermediates for the preparation of matrix metalloproteinase inhibitors.... | 09/12/2000 |
| 5952526 | Process for the dealkylating sulfonation of p-alkyl calixarenes Para sulfonated calixarenes are obtained in a one-step reaction directly from para blocked calixarenes by treating same with a sulfonating agent, such as concentrated sulfuric acid, to perform an ipso-electrophilic substitution.... | 09/14/1999 |
| 5599933 | Surfactant composition and method of making the same The reaction product of: (a) a compound of the formula: ##STR1## wherein X is a member selected from the group consisting of N, O and S; R1 and R2 are independently a straight or branched, saturated or unsaturated non-aromatic h... | 02/04/1997 |
| 5344997 | Alkylation of aromatics using a fluorided silica-alumina catalyst A fluorided silica-alumina catalyst, particularly one with a silica:alumina ratio in the range of 1:1-9:1 containing from 1 to 6 weight percent fluoride, is particularly effective in the liquid phase alkylation of benzene by linear olefins to produce line... | 09/06/1994 |
| 5330664 | Neutral and low overbased alkylphenoxy sulfonate additive compositions derived from alkylphenols prepared by reacting an olefin or an alcohol with phenol in the presence of an acidic alkylation catalyst This invention is directed to neutral and low overbased alkylphenoxy sulfonates derived from alkylphenols prepared by alkylating phenol with an acidic alkylation catalyst having a Hammett (Ho) acidity function of about -2.3 or less (more negati... | 07/19/1994 |
| 5302732 | Use of ultra-low sodium silica-aluminas in the alkylation of aromatics Silica-aluminas having a sodium content less than about 0.1 weight percent show increased stability when used as a catalyst for the alkylation of aromatic compounds. Where such silica-aluminas are used as the catalyst in detergent alkylation their increas... | 04/12/1994 |
| 4565546 | Condensation product and use thereof as dispersant for pitch in water slurry A novel condensation product obtained by reaction of an aldehyde and two kinds of sulfonic acid group-containing aromatic compounds. The product is useful as a dispersant for forming a pitch-in-water slurry.... | 01/21/1986 |
| 4439374 | Process for sulfonating impure ortho alkylphenol The sulfonation of o-alkylphenols by reaction with sulfuric acid is improved to give higher conversion to disulfonated o-alkylphenol by adding a small amount of a polybasic carboxylic acid (e.g. oxalic acid) to the o-alkylphenol. The sulfonated product is... | 03/27/1984 |
| 4410331 | Condensation products containing sulphonic acid groups: additives for dyeing synthetic polyamide New condensation products of the formula ##STR1## wherein R represents alkyl, cycloalkyl, aralkyl, aryl, or halogen, M represents hydrogen, an alkali metal or alkaline earth metal or an ammonium group, and n is a number from 1 to 3; these products ar... | 10/18/1983 |
| 3974210 | Alkylphenol disulfonates of improved color by neutralizing with strong caustic Alkylphenol disulfonates of improved color are provided by neutralizing alkylphenol disulfonic acid with aqueous solutions of alkali metal hydroxides having a base content of at least 30% by weight.... | 08/10/1976 |
