66 results about "Cellulose" patented technology

The process for the treatment of ligno-cellulosic biomass comprises the steps of:

• • A) Soaking a ligno-cellulosic biomass feedstock in vapor or liquid water or mixture thereof in the temperature range of 100 to 210° C. for 1 minute to 24 hours to create a soaked biomass containing a dry content and a first liquid;
  • B) Separating at least a portion of the first liquid from the soaked biomass to create a first liquid stream and a first solid stream; wherein the first solid stream comprises the soaked biomass; and
  • C) Steam exploding the first solid stream to create a steam exploded stream comprising solids and a second liquid.

The invention relates to a composite active black dye and preparation and use thereof, in particular to a composite active black dye for dyeing cellulose or protein fibers. The composite active black dye has high fastness to washing, lifting power, dyeing uniformity, dyeing reproducibility and dye-uptake. The composite active black dye mainly contains dye compounds of formula (I), formula (II) and formula (III).

The invention discloses a coating having heat-insulation and reflection functions. The coating comprises, by weight, 40-60 parts of a pure acrylic emulsion, 30-40 parts of hollow glass microspheres, 20-30 parts of ceramic microspheres, 10-30 parts of expanded perlite, 10-20 parts of titanium dioxide, 5-15 parts of mica powder, 3-8 parts of kaolin, 5-10 parts of barium sulfate, 2-8 parts of carboxyethyl cellulose, 5-10 parts of nano-silica, 8-15 parts of nanometer metal oxide, 3-8 parts of a filler, 1-5 parts of a film forming assistant, 4-8 parts of an assistant and 30-50 parts of deionized water. The coating having heat-insulation and reflection functions has good economic property, and also has heat-insulation and light and heat reflection functions.

This invention relates to cellulose II phosphate which may be partly carbamidated, and also to a metal-adsorbing material making use of the same. This cellulose II phosphate efficiently adsorbs metal ions in a solution, and can be used as a metal-adsorbing material and in a metal-adsorbing system.

The invention belongs to the technical field of coatings and provides an artistic coating which comprises the following components in parts by weight: 5-10 parts of water, 0.16-0.24 parts of bentonite, 0.3-0.6 parts of cellulose, 0.1-0.3 parts of a pH regulator, 0.5-0.7 parts of a dispersing agent, 0.1-0.3 parts of a wetting agent, 0.1-0.3 parts of a defoaming agent, 3-5 parts of an anti-freezingagent, 25-35 parts of pure acrylic emulsion, 0.4-0.8 parts of a coalescing agent, 0.1-0.3 parts of a preservative, 0.1-0.3 parts of a mildew preventive, 3-6 parts of a wax aid, 3-6 parts of a coveringpolymer, 15-25 parts of pearl powder and 15-35 parts of quartz sand. Through the synergistic effect of the components, the construction difficulty of the coating is effectively reduced while the original basic performance of a paint film is maintained, and the artistic coating is endowed with good adhesive force, high stain resistance, high glossiness, decorative performance, low VOC and environmental friendliness.

The invention discloses a preparation method of water-soluble sodium cellulose sulfate with high substituting degree, which comprises the following steps: 1) a reactor is added with concentrated sulphuric acid, slowly dropped with alcohol, stirred for reaction; the molar ratio of alcohol and concentrated sulphuric acid is 1: 1.8 to 2.8 and alcohol and concentrated sulphuric acid are mixed evenly to be made into a sulfonating agent; 2) the sulfonating agent is added with cellulose to form a non-homogeneous reacting system, stirred for reaction and washed by alcohol, thus obtaining sodium cellulose sulfate, wherein, the mass ratio of the sulfonating agent and the cellulose is 20 to 50: 1; 3) the sodium cellulose sulfate is added into water, the pH value is adjusted to 8 to 10 by using the solution of sodium hydroxide, the solution of the sodium cellulose sulfate is obtained through filteration; 4) ethanol is added into the solution of the sodium cellulose sulfate, centrifugal separation or filtering is carried out to obtain sodium cellulose sulfate precipitate which goes through vacuum drying, thus acquiring sodium cellulose sulfate. The sodium cellulose sulfate prepared by the invention has the advantages of relatively high substituting degree, little cellulose molecule degradation, relatively large molecule weight, etc., and has certain antibacterial and antivirus properties proven by research results.

A cellulose ester concentrate is provided comprising at least one non-nitrile carrier elastomer and at least one non-fibril cellulose ester, wherein said cellulose ester concentrate comprises at least 15 weight percent of said cellulose ester.

The invention discloses sticky-rice mortar and a preparation method thereof. The sticky-rice mortar comprises, by weight, 15-30 parts of sticky-rice flour, 100-180 parts of calcium hydroxide powder, 200-300 parts of calcium carbonate granules, 20-30 parts of sand, 1-5 parts of cellulose, 15-25 parts of fine aggregate, 3-12 parts of pre-gelatinized sticky-rice flour, 0.8-1.6 parts of a water reducer, 75-150 parts of water, 5-12 parts of red soil, 10-15 parts of coal ash, 10-20 parts of modified metakaolin and 10-15 parts of modified clay. The sticky-rice mortar has the advantages of fast curingspeed, small shrinkage and high strength.

The present invention provides an aqueous porcelain imitating coating material, which comprises the following components, by weight, 20-30 parts of a water-soluble polyvinyl alcohol emulsion, 15-25 parts of titanium dioxide powder, 15-25 parts of calcium carbonate, 0.5-0.7 part of methyl cellulose, 0.3-0.5 part of ethyl cellulose, and 65-75 parts of distilled water. The aqueous porcelain imitating coating material of the present invention has the following technical effects that: the coating material belongs to a high gloss coating material, no brick seam exists after dyeing with the coating material, the whole effect is good, and the coating material has the same characteristics as the characteristics of water resistance, alkali resistance, scrub resistance, and the like of the porcelain tile.

The invention relates to the field of feed, in particular to fiber-containing rumination fermented feed and a production method thereof. The method includes the steps: pretreating lignocellulose raw materials, mixing the pretreated materials with liquid by-products of the alcohol industry, mixing the obtained mixture with other raw materials so as to obtain a fermentation substrate, then inoculating a mixed bacterial liquid containing saccharomycetes, lactic acid bacteria and bacillus into the fermentation substrate, and performing fermentation so as to obtain the fiber-containing rumination fermented feed. Through the method, the problem of resource utilization of the lignocellulose raw materials can be solved, a new way to utilize the by-products of the alcohol industry can be provided,and the high-quality rumination fermented feed for animals can be produced. In addition, the fiber-containing rumination fermented feed which is produced by using the method has low content of neutraldetergent fiber and acid detergent fiber, good fermentation quality, a high nutritional value and better digestion characteristics, and can be widely used as high-quality rumination animal feed raw materials in animal husbandry.

The present invention provides a compound selected from sulfated cellulose and salts thereof which can be used as an active ingredient for a cutaneous external preparation produced intending to prevent, soften, improve or cure atopic cutaneous symptoms and the like and which are excellent in a hydrolytic resistance, and dermatitis therapeutic agents and cosmetics using the same.

The present invention provides a modified bacterial strain capable of fermenting both hexose and pentose sugars for production of bioalcohol wherein a promoter of pyruvate dehydrogenase operon (PDH) is replaced with a promoter of a gene that is expressed under anaerobic conditions. The present invention further provides a method of obtaining modified bacterial strain capable of fermenting both hexose and pentose sugar for production of bioalcohol. The present invention also provides a method of fermenting lignocellulosic biomass having hexose and pentose sugar using the modified bacteria for production of biomass.

The present invention provides a flame-retardant yarn/fabric/clothing, containing the following three types of fibers in percentage by weight percent based on their total weight: modacrylic: 20% to 80%; cellulose: 10% to 50%; and polyimide: 1% to 50%. A vertical burning test is carried out in accordance with GB/T 5455-2014 to test the flame retardance of the flame-retardant yarn, fabric or clothing in the present invention, and the measured char length is lower than 150 mm, 100 or 50 mm. The char length is reduced to different extents, and thus different flame retardance requirements are met.

The invention relates to a food packaging bag and a preparation method thereof and belongs to the field of plastic product processing. The food packaging bag is prepared from, by weight, 60-90 parts of polypropylene, 0.5-4 parts of coupling agent, 1-5 parts of filler, 3-12 parts of starch, 5-15 parts of cellulose, 4-7 parts of vermiculite power, 2-8 parts of insect repellant, 1-7 parts of preservative and 1-3 parts of flexibilizer. The food packaging bag is high in mechanical strength, resistant to stretching, low in mass and good in anti-tear performance, and meanwhile has good low-temperature impact resistance; by adding the insect repellant, the food bag has the effects of resisting mildew and repelling insects, and the raw materials are easy to obtain, purely naturally, safe and environmentally friendly; the preparation method is simple, the cost of the raw materials is low, the requirement on mechanical equipment is not high, large-scale application and popularization are easy, and good economic benefits are achieved.

The invention relates to a degradable capacitor plastic shell which is composed of the following components in parts by weight: 35 parts of polyvinyl alcohol resin, 15 parts of gelatin, 10 parts of methyl-silicone rubber, 5 parts of hyaluronic acid, 5 parts of tribasic lead sulfate, 5 parts of nano silicon dioxide, 5 parts of modified wood-plastic powder, 2 parts of chlorinated paraffin, 2 parts of propanediol, 2 parts of palm oil, 5 parts of carbon fiber, 5 parts of metallocene polyethylene, 2 parts of methylsilicone oil, 0.5 part of tobacco cellulose, 2 parts of plasticizer, 2 parts of oxidized polyethylene, 2 parts of dioctyl adipate, 2 parts of rare-earth light conversion agent, 2 parts of cotton fiber, 2 parts of corn starch, 2 parts of polyester rubber powder, 2 parts of butyl acetate and 2 parts of talcum powder. The method has the advantages of simple components and low cost; the finished product is degradable, has stable performance, and does not have toxicity or harm in a high-temperature environment; and meanwhile, by changing the traditional preparation technique and adding the refrigeration procedure, the product has higher safety and still has favorable stability at higher temperature.

The disclosure relates to an extraction method and application of phellinus igniarius polysaccharide. The method comprises the following steps: (1) crushing mature phellinus igniarius fruit bodies, performing sieving, and preparing a culture medium; (2) inoculating cellulose degrading bacteria and Paenibacillus polymyxa into the culture medium in the step (1) and performing fermentation for a certain period of time; (3) after the fermentation is completed, performing solid-liquid separation of bacteria and water-insoluble impurities to obtain a fermentation solution in which polysaccharide isdissolved; and washing a precipitate after solid-liquid separation, and combining a washing solution into the fermentation solution in which polysaccharide is dissolved; (4) performing ultrafiltrationon the mixed solution obtained in the step (3); and (5) performing precipitation by using an ethanol solution to obtain the phellinus igniarius polysaccharide product. The yield and purity of the phellinus igniarius polysaccharide product obtained by the method are relatively high, and the antioxidant ability is relatively high.

The invention discloses non-toxic anti-crack putty.The non-toxic anti-crack putty mainly comprises, by weight, 18-24 parts of calcite powder, 35-45 parts of shell powder, 25-32 parts of perlite, 3-6 parts of hydroxypropyl methyl celluloses, 7-13 parts of starch ether, 6-10 parts of modified seaweed, 6-12 parts of calcium carbonate, 3-4 parts of ethylenediamine, 4-7 parts of formic acid, 18-23 parts of diatomaceous earth, 7-15 parts of latex powder, 6-9 parts of sodium silicate, 4-6 parts of rosin, 3-5 parts of methyl silicone oil and 22-26 parts of water.The non-toxic anti-crack putty has the advantages that good anti-crack effects can be realized by the non-toxic anti-crack putty, the non-toxic anti-crack putty is good in adhesion, water resistance and glossiness and high in strength and is non-toxic and odorless, processes for manufacturing the non-toxic anti-crack putty are simple and are convenient to implement and suitable for factory mass production, and the like.

The invention discloses composition for reductive soil sterilization and an application of the composition. The composition comprises a cellulose degradation compound microbial agent formed by flavobacterium johnsoniae and pseudomonas fluorescens and further comprises corn stalk. The composition can change the microflora structure of soil and promote the corn stalk to degrade in the anaerobic environment to produce ammonia, methane, organic acid, hydrogen sulfide and other substances which have poisonous effects on fusarium oxysporum. By means of the composition, 99.9% of fusarium oxysporum can be killed, and 97.0% of pathogenic bacteria can still be killed in the dry period. Besides, the composition can notably improve the physical and chemical properties of soil, can effectively relievesecondary salinization of the soil, further can be used for controlling tomato wilt and has an improvement effect.

Provided are a coating composition for delayed release preparation capable of releasing a drug promptly in the stomach, without causing a time-dependent change, after a time (lag time) in which a solid preparation does not release the drug; and a solid preparation obtained by coating of the coating composition. More specifically, provided are a coating composition comprising at least a nonionic water-soluble cellulose ether and a cellulose-based enteric base material, wherein a weight ratio of the nonionic water-soluble cellulose ether to the cellulose-based enteric base material is from 95:5 to 65:35; and a solid preparation comprising at least a drug-containing core and the coating composition which covers the core, wherein the preparation can permit prompt dissolution of the drug in a stomach after a lag time.

The invention relates to the field of building materials, and particularly discloses a shield grouting material and a preparation method thereof. The shield grouting material is prepared from the following raw materials in parts by weight: 80 to 120 parts of cement, 180 to 300 parts of fly ash, 200 to 350 parts of sand, 50 to 80 parts of bentonite, 2 to 4 parts of a thickening agent, 0.5 to 1.5 parts of an expanding agent and 0.5 to 3 parts of a water reducing agent, the thickening agent is prepared from silica fume, hydroxypropyl methyl cellulose and diallyl phthalate; the shield grouting material prepared by the invention has a relatively high condensation speed.