Did You Know...
...that Kleenex tissue was originally designed to be a gas mask filter? It was developed at the beginning of World War I to replace cotton, which was then in short supply as a surgical dressing.
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| Number | Title | Issue Date |
| 4093647 | Process for oxycarbonylation of aromatic hydrocarbons A process for making aromatic carboxylic acids by reacting carbon monoxide with an aromatic compound in the presence of a mixture of a thallium salt and a palladium salt whereby highly efficient use of the available oxidant is achieved.... | 06/06/1978 |
| 4093528 | Terephthalic acid process A process for the preparation of terephthalic acid which comprises electrolyzing disodium terephthalate in the anode compartment of an electrolytic cell whereby terephthalic acid product is precipitated and subsequently separated. In a preferred embodimen... | 06/06/1978 |
| 4092230 | Electrochemical process for the manufacture of terephthalic acid A process for making terephthalic acid which comprises electrolyzing an aqueous solution of potassium acid terephthalate, preferably in the presence of a potassium salt of an acid stronger than terephthalic acid. In another embodiment of the invention ter... | 05/30/1978 |
| 4086289 | Manufacture of xylenes In the process of methylating toluene to obtain a mixture of xylenes by contacting toluene with hydrogen and a carbon oxide-containing gas in the presence of a catalyst, the improvement of using as catalyst zinc chromite mixed with an alkali metal exchang... | 04/25/1978 |
| 4086276 | Isomerization of cyclohexanebis(methylamine) stereoisomers A process for isomerizing cyclohexanebis(methylamine) by contacting it with an organometallic compound at a temperature of from about 100° to about 200° C.... | 04/25/1978 |
| 4086270 | Process for making terephthalic acid A process for making terephthalic acid of high purity by feeding an aqueous equilibrium hydrolysis solution of terephthalonitrile to a reactive distillation column operated at a temperature of from about 200° C to about 260° C at autogenous pressure whe... | 04/25/1978 |
| 4043829 | Stabilized wax emulsions Wax-in-water emulsion compositions containing 0.05 to 10 percent of a stability improving compound of the structural formula: ##STR1## wherein Q and Q' are substituents each selected from the group consisting of --NH2, --NHCH3, ... | 08/23/1977 |
| 4012400 | Preparation of sulfonates from sultones A process for the preparation of aluminum trialkyl sulfonates which are useful as intermediates to alkyl sulfonate surfactants which comprises reacting a long chain trialkyl aluminum at a temperature between about 100° C. and about 250° C. with a sulton... | 03/15/1977 |
