Abstract: Selective collating and binding processes for manufacture of digest-size mail order catalogs, magazines or other materials. Such "books" are most economically collated and bound in pairs on a "2-up" line that simultaneously produces two output streams of books. Mail order retailers and others require that the books be organized according to postal zones for favorable mail rate treatment. They also frequently prefer that various sets of customers receive various editions of the book; repeat buyers, for instance, may receive a more complete edition of a catalog than other buyers. Similarly, two or more mailers may desire that their mailing be combined, so that two or more sets of catalogs are packaged together for the same postal zones in order to receive favorable mail rate treatment. Processes of the present invention provide selective binding and collating on a 2-up line of such different catalogs, different editions of the same catalog, or different editions of different catalogs, or "versions.

Abstract: Selective collating and binding processes for manufacture of digest-size mail order catalogs, magazines or other materials. Such "books" are most economically collated and bound in pairs on a "2-up" line that simultaneously produces two output streams of books. Mail order retailers and others require that the books be organized according to postal zones for favorable mail rate treatment. They also frequently prefer that various sets of customers receive various editions of the book; repeat buyers, for instance, may receive a more complete edition of a catalog than other buyers. Similarly, two or more mailers may desire that their mailing be combined, so that two or more sets of catalogs are packaged together for the same postal zones in order to receive favorable mail rate treatment. Processes of the present invention provide selective binding and collating on a 2-up line of such different catalogs, different editions of the same catalog, or different editions of different catalogs, or "versions".

Abstract: A process of isolating dihydroxyacetone which is a useful intermediate in organic chemistry as well as being a sun-tanning agent. The process comprises passing a reaction mixture containing dihydroxyacetone in an organic solvent through at least one thin film evaporator to distil dihydroxyacetone separately from the solvent.

Abstract: 1-Cyano-3-[2',2'-(dihalogeno and/or trifluoromethyl)vinyl]-2,2-dimethylcyclopropanes are converted into the corresponding 1-amides and 1-carboxylic acids by reaction with sulphuric acid and water, or into the corresponding 1-carboxylic acid esters by reaction with sulphuric acid, water and a lower alkanol. High yields are obtained.

Abstract: Process for the preparation of 1-lower alkoxycarbonyl-3-(.beta.,.beta.-dichlorovinyl)-2,2-dimethylcyclopropanes from the corresponding 1-cyano-1-carboxylic acid ester by hydrolysis, decarboxylation of the free carboxylic acid, reaction of the cyclopropane nitrile with a lower aliphatic alcohol and anhydrous hydrogen chloride, followed by alcoholysis or hydrolysis of the reaction product so obtained to give the desired ester or carboxylic acid. Includes a method for the separation of essentially pure cis- and trans-isomers from the mixed nitriles. The products are useful intermediates for the preparation of pyrethroid insecticides.