Abstract: Antifoams and/or deaeraters based on oil-in-water dispersions contain, in the hydrophobic oil phase, 3-thiaalkan-1-ols, 3-thiaoxoalkan-1-ols, 3-thiadioxoalkan-1-ols, esters of said compounds or mixtures thereof as compounds having an antifoam and/or deaerating effect, and 3-thiaalkan-1-ols, 3-thiaoxoalkan-1-ols, 3-thiadioxoalkan-1-ols, esters of said compounds or mixtures thereof are used as antifoams and/or deaeraters.

Abstract: Stable aqueous polymer emulsions comprising the components A to C, water and, if required, further assistant and additives,

Abstract: Antifoams and/or deaerators are based on oil-in-water emulsions which contain, in the hydrophobic oil phase, at least one compound effective as an antifoam and/or deaerator and, if required, further components, the oil-in-water emulsions containing from 0.01 to 3% by weight of a water-soluble, amphiphilic copolymer having acid groups or of a water-soluble salt thereof as a stabilizer.

Abstract: Aqueous alkyldiketene dispersions which contain a C.sub.14 -C.sub.22 -alkyldiketene and from 1 to 10% by weight of a polymeric protective colloid contain, as the protective colloid(a) copolymers of(1) N-vinylpyrrolidone and(2) at least one quaternized N-vinylimidazole or a substituted quaternized N-vinylimidazoleas polymerized units in a molar ratio of from 80:20 to 5:95 and have a K value of at least 20 (according to H. Fikentscher in 0.5 M aqueous sodium chloride solution at a polymer concentration of 0.1% by weight and at 25.degree. C.) or(b) condensates which are obtainable by(1) partial amidation of polyethyleneimines with monocarboxylic acids and, if required(2) condensation of the partially amidated polyethyleneimines with at least bifunctional crosslinking agents which have a halohydrin, glycidyl, aziridine or isocyanate unit or a halogen atom as a functional groupto give crosslinked, amidated polyethyleneimines which have a viscosity of at least 100 mPa.

Abstract: An apparatus for assembling a bearing unit, particularly a wheel bearing unit for motor vehicles, in such a manner that the wheel bearing unit is of light construction, shows no prior damage and permits great flexibility in the manufacturing process. The force which is applied for the plastic deformation of the bead (9) at the end of the hub (1) is divided between the hub (1) and its support ram (11), on the one hand, and the hub flange (2) and its receiver (10) on the other hand, and thus, the necessary plastic deformation is concentrated in the region of the bead and not in the region between the hub (1) and the hub flange (2).

Abstract: A tapered roller bearing has its rollers guided between radially outwardly projecting lips at the small side and large side of the bearing inner ring. A cage for the bearing includes webs for separating adjacent rollers and includes a small side ring, with radially inward projections at the webs which are snapped behind the lip at the small side of the inner ring. The small side ring of the cage comprises approximately radially directed undulations with radially outward crests between the cage webs.