Abstract: A method for controlling paper web reel-up, particularly in a Pope-type reel-up apparatus, wherein a reeling cylinder provides power to a paper web reel being formed on a reeling drum at a nip formed between the periphery of the reeling cylinder and the periphery of the web reel being formed. The reeling operation is begun with the reeling drum held in primary forks. The reeling drum and inner section of the web reel formed on it are removed from the primary forks and delivered to secondary forks in which the final steps of the reeling operation are carried out. The primary and secondary forks are coupled to power equipment by which the loading of the power-transmitting nip is generated.

Abstract: The invention relates to a process for the preparation of .beta.-sitosterol having a low content of .alpha.-sitosterol of a sterol mixture isolated from the unsaponifiables obtained from crude soap from the sulphate cellulose process. The invention is based on crystallization of the sterol mixture from a mixture of an organic solvent and water, preferably 1,2-dichloroethylene or methyl ethyl ketone and water. By means of the process according to the invention, from starting materials containing 20 to 25% .alpha.-sitosterol is obtained a product which contains less than 5% .alpha.-sitosterol and which, when required, can be retreated by means of the process according to the invention to obtain .beta.-sitosterol containing less than 1% .alpha.-sitosterol. When using methyl ethyl ketone as organic solvent, .beta.-sitosterol is also purified of any betulin contained in the starting material.

Abstract: Process for the preparation of a .beta.-sitosterol concentrate containing less than 5% by weight of a .alpha.-sitosterol from sitosterol concentrates derived from plants by treating the sitosterol concentrate with a solvent mixture containing aromatic and/or aliphatic hydrocarbons as well as esters and, in addition, possible small amounts of other solvents.

Abstract: A method for preparing polyurethane coatings from a component substituting polyols, a triisocyanate and a catalyst by applying a mixture of said components and by polymerizing at a raised temperature, wherein the component substituting polyols is a neutral substance of mixed soap.