Abstract:
A polyamide, the enzymatic reaction product of at least one polyamine and diester, and processes for preparing and using the same. In addition, processes for preparing and using the enzymatic reaction product as creping adhesives and wet strength resins to make cellulose products.
Abstract:
A conductive microporous sheet material comprises primary carbon fibres having a cross-sectional dimension of at least 1 mu m, secondary carbon fibres in the form of carbon nanofibres and a binding agent for binding said primary and secondary fibres. The material may be produced by a wet-laid non-woven (paper-making) process. The sheet material may be used as a gas diffusion layer for a fuel cell or an electrode material for a battery.
Abstract:
A non-oil-based release aid used in a creping process for releasing a paper web from a Yankee dryer in the manufacture of a paper product having a formula for its block version as follows: R-(OC3H6)y(OC2H4)z OH; where R is a C8 to C20 alkyl or alkylaryl group, y plus z is greater than 20, and y is greater than z. The y moles of propylene oxide (OC3H6) and the z moles of ethylene oxide (OC2H4) may be added in random or block fashion. Examples of the chemical compound for the release aid are alkoxylated alkylphenols, alkoxylated fatty acids, and alkoxylated alcohols. A preferred chemical compound is an alkoxylated tall oil fatty acid. The release aid may optionally comprise from about 0 % to about 20 % by weight of an emulsifying surfactant. The release aid may comprise 70 % to 100 % by weight of the chemical compound, 0 % to 20 % by weight of emulsifying surfactants, and 0 % to 10 % by weight water. The release aid provides lubrication between the doctor blade and the Yankee dryer; allows the release of the paper web from the Yankee dryer, and improves the absorbency of the paper product.
Abstract translation:用于起皱过程中的非油基释放助剂,用于在制造具有如下公式的纸制品的扬基烘缸中从纸幅释放:R-(OC 3 H 6)y(OC 2 H 4)z OH ; 其中R是C8至C20烷基或烷基芳基,y加z大于20,y大于z。 环氧丙烷(OC3H6)的y摩尔数和环氧乙烷的z摩尔数(OC2H4)可以以随机或嵌段方式加入。 用于释放助剂的化合物的实例是烷氧基化烷基酚,烷氧基化脂肪酸和烷氧基化醇。 优选的化合物是烷氧基化妥尔油脂肪酸。 释放助剂可任选地包含约0重量%至约20重量%的乳化表面活性剂。 释放助剂可以包含70重量%至100重量%的化合物,0重量%至20重量%的乳化表面活性剂和0重量%至10重量%的水。 释放助剂在刮刀和扬克烘缸之间提供润滑; 允许从扬克烘干机释放纸幅,并提高纸制品的吸收性。
Abstract:
An antistatic composition for treating a substrate such as paper for use in a photocopier or the like, in rolls, or bundles in which sheets of the substrate are individually fed from a bundle of sheets of the substrate, comprises a single phase hydrocarbon oil composition. The hydrocarbon oil may optionally include additional antistatic additives. The composition reduces static between the individual sheets in the bundle, thus reducing paper misfeeds and jams when individual sheets in the bundle are fed into the photocopier. Also disclosed is a method of treating a substrate for use in a photocopier in which sheets of the substrate are individually fed from a bundle of sheets of the substrate, or rolls of a substrate, with an antistatic composition to reduce static between the individual sheets of the substrate. The method includes applying an antistatic composition including a hydrocarbon oil to at least one lateral margin of the bundle of sheets of the substrate.
Abstract:
The inventors have discovered that partially halogenated hydantoins exhibit superior antimicrobial efficacy and decreased performance additive decomposition rates than fully halogenated hydantoins, such as dichlorodimethyl hydantoin (DCDMH). Partially halogenated hydantoins are solutions containing monochlorohydantoin and, optionally, dihalogenated hydantoin or non-halogenated hydantoin. The present invention is a method of reducing slime in a circulating water slurry comprising organic matter and one or more performance additives, such as optical brighteners, while minimizing decomposition of the performance additives. The method comprises adding one or more partially halogenated hydantoins, such as Cl1.1-chlorodimethyl hydantoin, to the slurry. The concentration of partially halogenated hydantoin maintained in the slurry generally ranges from about 0.01 to about 50 ppm (expressed as Cl2). This method is particularly useful for circulating water slurries in paper processing.
Abstract:
Composition comprising a fluorescent pigment comprising the reaction product of one or more metal salts selected from the group consisting of metal oxides and metal hydroxides; one or more carbohydrate(s) selected from the group consisting of sugar and starch; and one or more organic acid(s), method of preparation comprising reacting the components in the presence of water and then drying, and use of the pigment in paper, plastic, polymer, resin, and paint. The resultant papers, plastics, polymers, resins, and paint have whiteness and brightness due to the fluorescence.
Abstract:
In the method for producing a release coating in the manufacture of a release material (R), such as release paper, a release agent based on silicone polymers is spread on top of a backing material (1), which release agent is catalytically cross-linked. The backing material (1), onto which the release coating (3) is spread, incorporates the coating's cross-linking catalyst. The cross-linking catalyst may be platinum or another catalytically active noble metal or tin, and it is spread onto the surface of the backing material acting as a base paper or added to the pulp stock for the base paper before formation of the paper web. There is no need for heating as used in previous methods to activate the catalyst.
Abstract:
The invention provides methods for the preparation of a starch copolymer product which is the reaction product of starch and one or more synthetic monomers capable of undergoing free radical polymerization wherein the reaction product is in the form of an emulsion or dispersion having weight-average particle sizes less than 180 nm as measured by Capillary Hydrodynamic Fractionation. The method includes the steps of: (a) dissolving or colloidally dispersing starch in an aqueous solvent to form a starch solution or dispersion; (b) heating the starch solution or dispersion to a specified temperature range; (c) adding to the starch solution or dispersion a first portion of the synthetic monomer and a free radical initiator for initiation of polymerization of the starch member and the synthetic monomer; and (d) after free radical polymerization of the synthetic monomers has been initiated in the presence of the starch, adding additional portions of synthetic monomers capable of undergoing free radical polymerization to the starch solution or dispersion. The invention also provides improved methods for the preparation of starch copolymer products utilizing wet adhesion monomers and improved industrial and architectural coatings containing the resulting starch copolymer products.
Abstract:
The invention relates to a method for the preparation of a cellulose pulp adapted to be defibrated (fluffed) for production of absorbent material intended to be included as a constituent in absorbent products. The distinguishing features are that at least some non polymeric aluminium salt, which is water soluble, is added to a stock of cellulose fibres in a water suspension, that this fibre pulp is formed to a web which is dewatered and dried, and that its moisture content is adjusted to more than 8 % but not more than 20 % at the latest before defibration. The invention also relates to cellulose pulp which is adapted to be defibrated as well as to the defibrated cellulose pulp and absorption products produced therefrom.
Abstract:
A method of fixing cellulose fibres and rendering them dimensionally stable is described. The cellulose fibres are comprised in a material containing cellulose fibres, preferably a paper material. The method is characterised by first treating the cellulose fibres with a carboxylic acid, preferably in combination with an inorganic acid, such as sulphuric acid, and thereafter with a polyethylene glycol which is then cross-linked by means of a cross-linking agent. The contents of carboxylic acid preferably are about 3-15 % by weight, calculated on dry cellulose fibres, and the contents of polyethylene glycol preferably are about 3-15 % by weight, calculated on dry cellulose fibres. The carboxylic acid preferably is acetic acid and the polyethylene glycol preferably has a molecular weight of about 200-400. In the treatment of paper material the carboxylic acid and the polyethylene glycol may be added to the stock, the carboxylic acid being added first and the polyethylene glycol about 1-30 min thereafter.