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Matches 301 - 350 out of 1,558

Document Document Title
WO/2001/070820A1
A process for preparing in one step cellulose esters (particularly cellulose diesters) having uniform substituent distribution and being soluble in hydrous acetone or other solvents. This process comprises esterifying cellulose under ult...  
WO/2001/053366A1
The present invention is directed to a copolymer capable of forming a water- and oil-repellent agent that enables binding to textiles and other materials without the production of formaldehyde. The copolymer according to the present inve...  
WO/2001/046264A1
A novel partial ester of cellulose with a nitrogenous carboxylic acid, the ester being useful as an antibacterial agent, a flame retardant, etc.; and a simple process for producing the partial ester. Fibers made of the partial ester have...  
WO/2001/025283A1
Disclosed are amine functional cellulose ester resins and methods of making the same. The amine functional cellulose ester resins comprise at least one repeat unit of structure (I) wherein R¿1?, R¿2?, and R¿3? are selected independent...  
WO/2001/025352A1
Disclosed are a method of dispersing a pigment, a pigment dispersion, a coating composition comprising said pigment dispersion, a method of making a coating composition, and a method of improving the appearance of a coating composition. ...  
WO2000047701A3
In one aspect, the invention provides methods for separating a corn fiber lipid fraction from corn fiber and novel corn fiber oils prepared therefrom. In another aspect, the invention provides methods of obtaining derivatizable cellulose...  
WO/2001/005839A1
This invention refers to the use of surface-active agents as a treatment of effluents containing acetic derivatives by tangential filtration characterized from aqueous solutions containing between 20 and 35 % in weight of acetic derivati...  
WO/2001/002442A1
The invention is directed to a biocompatible polysaccharide derivative (I) which comprises (1) a polysaccharide covalently bonded to aspartic acid, (2) a two step process to prepare said material from a polysaccharide, maleic anhydride a...  
WO2000047628A3
A method for producing derivatized microfibrillar polysaccharide, including but not limited to cellulose, derivatized by steric and/or electrostatic forces, where the electrostatic forces are provided by anionic charge or by a combinatio...  
WO/2000/071586A1
Cellulose derivatives are formed by first crosslinking cellulose and subsequently reacting the crosslinked cellulose with a reagent capable of forming a cellulose ether or ester. Many crosslinking agents are suitable but those forming et...  
WO/2000/050493A1
The invention concerns a method for making a cellulose or starch fatty ester by esterification or transesterification of a cellulosic or starchy material using a fatty reagent. The invention is characterised in that it consists in introd...  
WO/2000/050492A1
The invention concerns a method for making a solid cellulosic or starchy material hydrophobic which consists in: grafting a fatty material on the alcohol functions of the cellulosic or starchy material. The invention is characterised in ...  
WO/2000/047628A2
A method for producing derivatized microfibrillar polysaccharide, including but not limited to cellulose, derivatized by steric and/or electrostatic forces, where the electrostatic forces are provided by anionic charge or by a combinatio...  
WO/2000/047701A2
In one aspect, the invention provides methods for separating a corn fiber lipid fraction from corn fiber and novel corn fiber oils prepared therefrom. In another aspect, the invention provides methods of obtaining derivatizable cellulose...  
WO/2000/044791A1
A method for directly producing a mixture of cellulose sulfoacetate derivatives by esterification of cellulosic material, characterized in that it comprises the following steps i) the cellulosic material is suspended in a glacial acetic ...  
WO/2000/039167A1
The invention relates to a method for producing a cellulose derivative with formate substituents by reacting a cellulose material that has been impregnated with excess alkaline and/or alkaline-earth lye, with a formylating agent. The met...  
WO/2000/032638A1
The invention concerns chiral esters of polysaccharides, preferably of cellulose, amylose, $g(b)-cyclodextrin or amylopectin, obtained by reacting, in a basic medium, polysaccharides (polyhydroxy compounds) with racemic or enriched acid ...  
WO/2000/031143A1
Cellulose triacetate having satisfactory filterability, i.e., having a clogging constant (K) as determined by the following method of 70 or lower. (Measurement method) Cellulose triacetate is dissolved in a methylene chloride/methanol [9...  
WO/2000/018861A1
A water-soluble or water-dispersible material for deposition onto a substrate during a treatment process, the material comprising: (i) a deposition enhancing part having a polymeric backbone; and (ii) a benefit agent attached to the depo...  
WO/2000/015692A1
A cellulosic ester has associated with the ester at least one near infrared fluorophore. A method for incorporating the near infrared fluorophore into the cellulosic ester is also provided. In the method, the near infrared fluorophore is...  
WO1999049125A3
Provided are compounds and methods for modifying a material to change properties of the material, as well as a variety of products obtained using the methods. In one embodiment, a material comprising one or more modifiable functional gro...  
WO1999049124A3
Provided are compounds and methods for modifying a material to change properties of the material, as well as a variety of products obtained using the methods. The material which is modified may be, for example, a carbohydrate, and the mo...  
WO/1999/055774A1
The application relates to a process for blending a cellulose ester with a functional additive, by: (a) admixing the functional additive with the cellulose ester and a first acid; and (b) contacting the admixture with an aqueous precipit...  
WO/1999/050305A1
An article molded from a cellulose acetate composition containing a composite of a degradation accelerator comprising at least one compound selected from the group consisting of oxyacids of phosphorus, oxyacids of sulfur, oxyacids of nit...  
WO/1999/049124A2
Provided are compounds and methods for modifying a material to change properties of the material, as well as a variety of products obtained using the methods. The material which is modified may be, for example, a carbohydrate, and the mo...  
WO/1999/049125A2
Provided are compounds and methods for modifying a material to change properties of the material, as well as a variety of products obtained using the methods. In one embodiment, a material comprising one or more modifiable functional gro...  
WO/1999/040120A1
A process for preparing a carboxylated cellulose ester from oxidized cellulose is described. The carboxylated cellulose esters have improved solvent solubility and coating resin compatibility when compared to cellulose esters made from r...  
WO/1999/023118A1
The invention relates to the reaction of a polyhydroxy polymer or a derivative thereof with at least one lactone, lactam or one suited carboxylic acid in order to produce a preferably biodegradable polymer resulting in a homogenous melti...  
WO/1999/022599A1
Cellulose is surface-modified by coating and/or acylation with C¿2? to C¿24?, in same cases primarily C¿6? to C¿22?, or more narrowly C¿16? to C¿20?, aliphatic acids, to obtain cellulose esters exhibiting a degree of substitution o...  
WO/1998/049200A1
The invention concerns reactive cellulose, i.e. having in particular a very low degree of crystallinity obtainable with a high degree of purity. Said novel reactive cellulose is particularly used as raw material for making cellulose ethe...  
WO/1998/041543A1
The invention relates to a method for producing cellulose acetate with a DS between 1.5 and 2.9 by reacting cellulose with an acetylation agent. According to said method, the cellulose is reacted with a first acetylation agent using a ba...  
WO/1998/017692A1
This invention describes improvements in or relating to the production of polysaccharide derivatives; more particularly it relates to a method of converting insoluble polysaccharides to a form in which they form part of an anhydrous syst...  
WO/1998/001497A1
The invention relates to various methods for the acetylation of lignocellulosic fibres such as jute, hemp, wood fibre, sisal, tow, straw and the like, and involves the mixing of the lignocellulosic material acetic anhydride in such quant...  
WO1997036037A3
Modified cellulosic fibers are formed by (1) esterifying cellulosic fibers with a 1,2-disubstituted alkene that has at least one carboxylic acid group reactive with cellulosic hydroxyl groups and (2) oxidizing the esterified fibers to fo...  
WO/1997/040074A1
The present invention relates to a process for preparing a substituted cellulose acetoacetate alkanoate without using a carboxamide/lithium chloride solvent system. The process involves contacting cellulose in a carboxylic acid diluent w...  
WO/1997/038016A1
Cellulose esters according to formula (I): [(C6H7O2)(OR)x(OR')y(OH)3-x-y]n are described, where R is hydrophobic, R' is hydrophilic and not phthalyl or trimellityl, which may be designed, by the proper selection of R, R', x, y, and n, to...  
WO/1997/036037A2
Modified cellulosic fibers are formed by (1) esterifying cellulosic fibers with a 1,2-disubstituted alkene that has at least one carboxylic acid group reactive with cellulosic hydroxyl groups and (2) oxidizing the esterified fibers to fo...  
WO/1997/018242A1
The present invention relates to a modified cellulose ester containing unsaturated pendant groups which can be prepared by reacting a cellulose ester containing residual hydroxyl groups with, for example, maleic anhydride in acetic acid ...  
WO/1997/017065A1
Provided are enteric coating compositions which utilize a low viscosity cellulose acetate phthalate polymer as a film former. The cellulose acetate phthalates have an inherent viscosity of about 0.2 to 0.6 dL/g and phthalyl values of fro...  
WO/1997/012917A1
Cellulose microfibrils, in particular for use as a reinforcing filler or structuring agent in composite materials, a method for making same, and composite materials containing said microfibrils, are disclosed. Specifically, said microfib...  
WO/1997/002292A1
A method for preparing a cellulose formate solution from cellulose slabs, particularly high-density slabs, without mechanically destroying said slabs in advance, is disclosed. The slabs are directly dissolved by impregnating the whole sl...  
WO/1996/030413A1
A cellulose acetate which, despite the high average degree of polymerization, has a low solution viscosity and a high moldability.The low-molecular-weight fraction of cellulose acetate (such as CTA having an average degree of acetylation...  
WO/1996/030412A1
Cellulose acetate which can provide moldings improved in the properties, particularly film strength and pliability. The cellulose acetate has an average degree of acetylation of not less than 59 %, a viscosity-average degree of polymeriz...  
WO/1996/027615A1
The present invention relates to photochemically cross-linked polysaccharide derivatives of general formulae (IA) and (IB), wherein R is a polysaccharide radical in which the OH groups have been esterified as OR' groups or converted into...  
WO/1996/020961A1
The present invention relates to a process for preparing cellulose esters having a total DS/AGU of 0.1 to 3.0, said process consisting of contacting the following: (i) a cellulose material, (ii) a solubilizing amount of a solvent system ...  
WO/1996/020960A1
The present invention relates to a process for preparing cellulose esters having a total DS/AGU of 0.1 to 3.0, said process consisting of contacting the following: (i) a cellulose material, (ii) a solubilizing amount of a solvent system ...  
WO/1996/019526A1
This invention relates to a process for acetylation of lignocellulosic fibres (LF) using an acetylating agent comprising acetic anhydride at a temperature of above 140 �C and a pressure of 100-150 kPa wherein raw or substantially raw L...  
WO/1996/015154A1
The invention relates to a cationic polysaccharide, preferably in fibrous form, having superabsorbent characteristics, the polysaccharides being substituted by quaternary ammonium groups and having a ds of at least 0.5, preferably 0.5 to...  
WO/1996/015137A1
The invention relates to an anionic polysaccharide having superabsorbent characteristics, its polysaccharide being substituted by sulphate groups and the polysaccharide being cross-linked to a sufficient extent that it remains insoluble ...  
WO/1996/006864A1
A method is described for the chemical modification of pre-shaped hydrogels in non-aqueous medium. The conditions permit the reaction of highly expanded, porous hydrogel particles, such as spherical beads, using pseudo homogeneous reacti...  

Matches 301 - 350 out of 1,558