Abstract: A transmission is disclosed which has at least two component transmissions and which are shiftable independently of one another, and where the transmission has a friction clutch; first and second transmission input shafts; and a transmission output shaft which can be brought into connection with an engine output shaft by means of a form-fitting force actuating shifting element.

Abstract: Aqueous aminoresin solutions for low-formaldehyde surface bonding, based on condensates of melamine, urea, phenol and formaldehyde having a molar ratio of from 1.4 to 1.8 moles of formaldehyde, from 0.04 mole to 0.1 mole of melamine and from 0.015 to 0.04 mole of phenol per mole of urea, relative to the total amount of the aminoresin, are obtainable by mixing(A) from 20 to 40% by weight of melamine/urea/phenol/formaldehyde consensate with(B) from 60 to 80% by weight of a urea/formaldehyde condensate.

Abstract: In the proposed pulverulent aminoplast adhesive resin for wood-base materials having a low formaldehyde emission, the resin is a mixture of(a) from 40 to 90 parts by weight of a urea/formaldehyde resin having a molar ratio of urea to formaldehyde of from 1:1.4 to 1:2,(b) from 2 to 20 parts by weight of melamine, some or all of which may have been reacted with the urea/formaldehyde resin component,(c) from 2 to 20 parts by weight of urea and(d) if required, from 0.1 to 10 parts by weight of an agent for increasing the shelf life,together with not more than 10 parts by weight of water and, if required, not more than 10 parts by weight of other additives, the numbers of parts by weight of the components summing to 100.In the process for the preparation of the pulverulent aminoplast adhesive resin, powdered melamine is stirred into a solution of the urea/formaldehyde resin, urea is added and the solution is spray dried.

Abstract: Calcium propionate is prepared by passing a vaporous mixture of propionic acid and water into an aqueous solution containing calcium propionate and calcium hydroxide, with or without propionic acid.

Abstract: In a proposed aminoplast adhesive resin powder for wood-based materials, which eliminates little formaldehyde, the resin is a mixture of(a) from 40 to 75 parts by weight of a urea/formaldehyde resin having a molar ratio of urea to formaldehyde of from 1:1.4 to 1:2,(b) from 10 to 20 parts by weight of a melamine/formaldehyde resin having a molar ratio of melamine to formaldehyde of from 1:1.3 to 1:3,(c) from 15 to 25 parts by weight of milled urea and(d) from 0.3 to 5 parts by weight of a flow improver, as well as up to 10 parts by weight of water and, if required, up to 10 parts by weight of other additives, the number of parts by weight of the components summing to 100.

Abstract: An aqueous solution of a resin glue comprising formaldehyde, urea, melamine and phenol is obtained when phenol, formaldehyde and not more than 0.35 mole of an alkali metal bisulfite per mole of phenol are reacted to give a phenol-formaldehyde condensate, formaldehyde and urea in a molar ratio of not more than 2.5 are reacted to give a urea-formaldehyde condensate, and the reaction products are in turn reacted with melamine and formaldehyde.

Abstract: Glyoxal is prepared by oxidizing glycol in the presence of a silver catalyst of a defined particle size and under defined conditions of temperature, residence time and inert gas concentration.The glyoxal obtainable by the process of the invention may be used in wrinkle-resist finishing, as an assistant for increasing the tensile strength and resilience of fibrous materials, a tanning agent, a hardener in the photographic industry, and a starting material for the manufacture of synthetic resins, textile auxiliaries, for example to prevent shrinkage after washing, paper additives, for example for increasing the wet strength, and plastics.

Abstract: Feed pellets are produced by homogeneously mixing feed meals with from 0.1 to 2% of a pulverulent urea-formaldehyde resin obtained by spray-drying a glue solution, and pelletizing the mixture.

Abstract: Manufacture of formaldehyde by oxidative dehydrogenation of methanol in the presence of a silver catalyst using methanol obtained from a condensate derived from the evaporation of aqueous reaction mixtures in the synthesis of urea resins and then treated with caustic soda solution under specific conditions of temperature, pressure, residence time and initial formaldehyde concentration. The formaldehyde obtained is a disinfectant, tanning agent, reducing agent and starting material for the manufacture of synthetic resins, adhesives and plastics.

Abstract: The production of formaldehyde by oxidizing dehydrogenation of methanol in the presence of a silver catalyst using air which has been washed with a solution of an alkali metal compound in water and methanol in specific proportions. The product is a disinfectant, tanning agent, reducing agent and a starting material for the production of synthetic resins, adhesives and plastics.

Abstract: The production of formaldehyde by oxidizing dehydrogenation of methanol in the presence of a silver catalyst which consists of three or more layers each of specific weight and particles of specific particle size and having a specific total layer thickness. Formaldehyde prepared according to the process of the invention is a disinfectant, tanning agent, reducing agent and valuable starting material for the production of synthetic resins, adhesives and plastics.

Abstract: Stabilized, aqueous formaldehyde solutions and a process for their manufacture by addition of isophthalobis-guanamine and/or terephthalo-bis-guanamine. The formaldehyde solution of the invention is used as a disinfectant, tanning agent or reducing agent, and as a starting material for the manufacture of synthetic resins, adhesives and plastics.

Abstract: Manufacture of formaldehyde by oxidative dehydrogenation of methanol in the presence of a silver catalyst, wherein methanol and water are evaporated in the presence of air in a plate column containing a number of double plates each consisting of a sieve plate and a lower plate having the form of a shallow bowl and inclined at a specific angle to the horizontal, the resulting vaporous mixture then being reacted. The formaldehyde which may be produced by the process of the invention is a disinfectant, tanning agent, reducing agent and a valuable starting material for the manufacture of synthetic resins, adhesives and plastics.

Abstract: Production of formaldehyde by oxidizing dehydrogenation of methanol in the presence of a silver catalyst and a tertiary or secondary amine. The formaldehyde which can be prepared by the invention is a disinfectant, tanning agent, reducing agent and valuable starting material for the production of synthetic resins, adhesives and plastics.

Abstract: Production of formaldehyde by vaporization of a mixture of methanol and water in the presence of a mixture of alkanols and dialkylethers, and then by a catalytic, oxidizing dehydrogenation of methanol. The formaldehyde obtainable according to the process of the invention is useful as a disinfectant, a tanning material, a reducing agent or as a valuable initial material for the production of synthetic resins, adhesives and plastics.

Abstract: The preparation of isobutylidenediurea from isobutyraldehyde and urea, the particle size of the product being controlled by alternate use of sulfuric acid and phosphoric acid.

Abstract: The manufacture of formaldehyde by oxidative dehydrogenation of crude methanol in the presence of a silver catalyst, the crude methanol being caused to impinge against baffle plates before the reaction takes place, the impurities which separate at the baffle plates being collected. The formaldehyde manufactured by the process of the invention is valuable as a disinfectant, tanning agent, reducing agent and intermediate in the manufacture of synthetic resins, adhesives and plastics.