Abstract:
A process for the treatment of archival material such as books and other bound volumes. The treatment includes a radiation-induced polymerization of at least one vinyl monomer within the paper of the archival material. The process, which is carried out in a substantially nonaqueous system, may be used to improve the structure of paper as well as to provide some protection against degradation of the paper.
Abstract:
A method of deacidifying paper wherein the paper has a substantially cellulose fiber base or substrate by exposing the paper to the vapors of a volatile organometallic compound and subsequently decomposing said compound to a base or alkaline material in situ. The treated material is usually first dried in vacuo and exposed under anhydrous or nearly anhydrous conditions to the organic-metallic compound. The method has the advantage of being able to treat large quantities of material at any one time.
Abstract:
A product including two or more plies with each ply including one absorbent layer and a second opposing fluid impervious layer. The two plies are arranged such that the fluid impervious layers face each other and are positioned at the inside of the two-ply product. The two plies are bonded on two or three sides to form a sleeve or a pocket, such that a hand can be inserted between the two plies and positioned in contact with one or both fluid impervious layers. In this manner, the product is absorbent on both sides, and can be utilized on both sides while preventing hand contact with the material absorbed or picked up by the product.
Abstract:
The invention relates to a novel enzyme obtained from Bacillus agaradherens (DSM 9948), which can be regarded as cyclodextrin glucanotransferase (CGTase) and also as α-amylase. The invention also relates to sufficiently similar proteins or derivatives that exhibit amylolytic and/or CGTase activity, to the corresponding nucleic acids and micro-organisms that produce said proteins and derivatives, to methods for the production of said proteins and to diverse uses of the same. In addition, said proteins can be further developed for other, predominantly technical purposes. The invention relates in particular to detergents and cleaning agents containing CGTase of this type, to methods for cleaning textiles or hard surfaces using CGTase of this type or corresponding agents and to the use thereof for cleaning textiles or hard surfaces.
Abstract:
A method to safely remove foxing stains from paper and celluloid items using distilled water, sodium hypochlorite, acetic acid, sodium bicarbonate and glue size.
Abstract:
Process for conservation of a cellulosic material, comprising a treatment wherein said cellulosic material is contacted with a stabilising agent, and at least one of the cellulosic material or the stabilising agent is cooled before and/or during the treatment. A deacidification agent comprising magnesiumdipropoxycarbonate, propanol and an HFC selected from MFC-134a and EFC-227ea is particularly preferred as stabilising agent.
Abstract:
The device comprises an autoclave (1), a solvent tank or bottle (2), a tank (3) for gravity collection and cooling of the residual solution arriving form autoclave (1) for its later recovery, a dosification tank for concentrated reagent (4), dosed according to the weight of cellulosic material treated, a tank (5) which is connected by quick sockets to the system in order to recharge tank (2), a compressor unit (C), a refrigeration system (R) and a vacuum pump (8). The described system is controlled by a programmable robot aided by a screen on which are selected the stages of the procedure and the type of procedure itself, according to the amount of cellulosic materials to be treated, forming a transportable unit, and to a certain extent a portable one.
Abstract:
A product including two or more plies with each ply including one absorbent layer and a second opposing fluid impervious layer. The two plies are arranged such that the fluid impervious layers face each other and are positioned at the inside of the two-ply product. The two plies are bonded on two or three sides to form a sleeve or a pocket, such that a hand can be inserted between the two plies and positioned in contact with one or both fluid impervious layers. In this manner, the product is absorbent on both sides, and can be utilized on both sides while preventing hand contact with the material absorbed or picked up by the product.
Abstract:
Tetrahydrocarbazoles of formula where Q is —SO2—; —O—; or —(CO)—; X is —(CH)—; or —N—; m is from 1 to 3; t is 0 or 1 and the remaining substituents are as defined herein, are useful as antimicrobial active ingredients.