An oil-in-water type composition which can provide a chewy texture both in a non-cooked state and a heated state and does not show water/oil separation, including: an alkyl cellulose, a 1% by mass aqueous solution of which has a viscosity at 20° C. of from 4,000 to 11,000 mPa.Math.s when measured with a Brookfield type viscometer and a 1.5% by mass aqueous solution of which has a storage modulus G′ (65° C.) at 65° C. of from 2,500 to 4,500 Pa; an edible oil or fat; and water. Also provided is a food using the alkyl cellulose.

A method for producing a highly viscous water-soluble cellulose ether has a small undissolved fiber content and a high loose bulk density. More specifically, a production method includes steps of: bringing cellulose pulp into contact with an alkali metal hydroxide solution to obtain an alkali cellulose mixture; draining the alkali cellulose mixture to obtain an alkali cellulose; reacting the alkali cellulose with an etherifying agent to obtain a water-soluble cellulose ether mixture; washing and draining the water-soluble cellulose ether mixture to obtain a first moist cellulose ether; mixing the first moist cellulose ether with water to obtain a second moist cellulose ether; coarsely pulverizing the second moist cellulose ether with a coarse pulverizer to obtain a coarsely pulverized cellulose ether; cooling the coarsely pulverized cellulose ether; and then drying and pulverizing the coarsely pulverized cellulose ether.

A method for producing a highly viscous water-soluble cellulose ether has a small undissolved fiber content and a high loose bulk density. More specifically, a production method includes steps of: bringing cellulose pulp into contact with an alkali metal hydroxide solution to obtain an alkali cellulose mixture; draining the alkali cellulose mixture to obtain an alkali cellulose; reacting the alkali cellulose with an etherifying agent to obtain a water-soluble cellulose ether mixture; washing and draining the water-soluble cellulose ether mixture to obtain a first moist cellulose ether; mixing the first moist cellulose ether with water to obtain a second moist cellulose ether; coarsely pulverizing the second moist cellulose ether with a coarse pulverizer to obtain a coarsely pulverized cellulose ether; cooling the coarsely pulverized cellulose ether; and then drying and pulverizing the coarsely pulverized cellulose ether.

A method of making a proppant-gel matrix comprising: a) hydrating a gelling agent to form a hydrated gelling agent; b) adding a basic compound to the hydrated gelling agent to form a basic hydrated gelling agent having a pH in the range of 11.5 to 14.0; c) mixing the basic hydrated gelling agent and a proppant to form a basic hydrated gelling system; and d) adding a crosslinking agent to the basic hydrated gelling system to form the proppant-gel matrix, is disclosed. The proppant-gel matrix can then be used as a fracturing fluid in a hydraulic fracturing process.

A method of making a proppant-gel matrix comprising: a) hydrating a gelling agent to form a hydrated gelling agent; b) adding a basic compound to the hydrated gelling agent to form a basic hydrated gelling agent having a pH in the range of 11.5 to 14.0; c) mixing the basic hydrated gelling agent and a proppant to form a basic hydrated gelling system; and d) adding a crosslinking agent to the basic hydrated gelling system to form the proppant-gel matrix, is disclosed. The proppant-gel matrix can then be used as a fracturing fluid in a hydraulic fracturing process.

There are provided hydroxypropyl methyl cellulose (HPMC) having high solubility even when keeping the molar substitution (MS) of hydroxypropoxy groups conventional; and others. More specifically, there are provided HPMC having a molar substitution (MS) of hydroxypropoxy groups of from 0.1 to 0.5, a ratio (referred to as MF at 3-position/MS) of 0.12 or more, as calculated by dividing a molar fraction (referred to as MF at 3-position) of anhydroglucose units in which only a hydroxy group at the 3-position carbon is substituted with a hydroxypropoxy group and none of hydroxy groups at the 2-position and 6-position carbons is substituted with a hydroxypropoxy group by the molar substitution (referred to as MS) of hydroxypropoxy groups, and a viscosity at 20 C. of more than 50 mPa.Math.s and not more than 150000 mPa.Math.s, as determined in a 2% by mass aqueous solution; and others.

There are provided hydroxypropyl methyl cellulose (HPMC) having high solubility even when keeping the molar substitution (MS) of hydroxypropoxy groups conventional; and others. More specifically, there are provided HPMC having a molar substitution (MS) of hydroxypropoxy groups of from 0.1 to 0.5, a ratio (referred to as MF at 3-position/MS) of 0.12 or more, as calculated by dividing a molar fraction (referred to as MF at 3-position) of anhydroglucose units in which only a hydroxy group at the 3-position carbon is substituted with a hydroxypropoxy group and none of hydroxy groups at the 2-position and 6-position carbons is substituted with a hydroxypropoxy group by the molar substitution (referred to as MS) of hydroxypropoxy groups, and a viscosity at 20 C. of more than 50 mPa.Math.s and not more than 150000 mPa.Math.s, as determined in a 2% by mass aqueous solution; and others.

The present invention provides alkyl substituted polysaccharide compositions and methods of repairing substrates involving use of the alkyl substituted polysaccharide compositions.

The present invention provides alkyl substituted polysaccharide compositions and methods of repairing substrates involving use of the alkyl substituted polysaccharide compositions.

A method for the synthesis of alkyl -carboxy(hydroxyethyl) polysaccharides is described. The method includes methylating or ethylating a polysaccharide or providing a methylated or ethylated polysaccharide, hydroxyethylating the methylated or ethylated polysaccharide, and oxidizing the hydroxyethylated polysaccharide to form the -carboxy(hydroxyethyl) polysaccharide. A method for the synthesis of oxidized polysaccharides is also described. The method includes hydroxypropylating a polysaccharide and oxidizing the hydroxypropylated polysaccharides. A method for the production of a solid capable of forming a hydrogel is also described. The method includes combining a first solution comprising an oxidized oligo(hydroxypropyl) polysaccharide bearing one or more ketone groups with a second solution comprising an amine substituted polysaccharide to form a third solution, and removing solvent from the third solution to form the solid, or adding an additional solvent to the third solution to precipitate the solid. Novel polysaccharides and hydrogels prepared according to these methods are also described.