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1486 results about "Regenerated cellulose" patented technology

Regenerated cellulose is a class of materials manufactured by the conversion of natural cellulose to a soluble cellulosic derivative and subsequent regeneration, typically forming either a fiber (via polymer spinning) or a film (via polymer casting).

Absorbent sheet having regenerated cellulose microfiber network

An absorbent paper sheet for tissue or towel includes from about 99 percent to about 70 percent by weight of cellulosic papermaking fiber and from about 1 percent to about 30 percent by weight fibrillated regenerated cellulose microfiber which was regenerated form a cellulosic dope utilizing a tertiary amine N-oxide solvent or an ionic liquid. Fibrillation of the microfiber is controlled such that it has a reduced coarseness and a reduced freeness as compared with unfibrillated regenerated cellulose microfiber from which it is made and provides at least one of the following attributes to the absorbent sheet: (a) the absorbent sheet exhibits an elevated SAT value and an elevated wet tensile value as compared with a like sheet prepared without fibrillated regenerated cellulose microfiber; (b) the absorbent sheet exhibits an elevated wet/dry CD tensile ratio as compared with a like sheet prepared without fibrillated regenerated cellulose microfiber; (c) the absorbent sheet exhibits a lower GM Break Modulus than a like sheet having like tensile values prepared without fibrillated regenerated cellulose microfiber; or (d) the absorbent sheet exhibits an elevated bulk as compared with a like sheet having like tensile values prepared without fibrillated regenerated cellulose microfiber. In some embodiments, the pulp is pre-treated with debonder to enhance the wet/dry CD tensile ratio of the sheet.
Owner:GPCP IP HLDG LLC

Method for continuously preparing regenerated cellulose fibre

The invention discloses a method for continuously preparing regenerated cellulose fibers through the solvent method, comprising the following steps that: a cellulose raw material is dissolved into an ion liquid to prepare a spinning liquid; gel type regenerated cellulose fibers are obtained through spinning; and the regenerated cellulose fibers are obtained through cleaning, rear draft and drying, wherein, the ion liquid is selected from one or a plurality among the following ion liquids: a). an ion liquid with 1, 3-dialkyl imidazole as a cation and formiate radical, radical vinegar or propionate radical as an anion; and b). an ion liquid with 1-R1-3-R2- dialkyl imidazole as the cation and chlorine, bromine, iodine, formiate radical, radical vinegar, sulfate radical, nitrate radical, tetrafluoroborate radical, thiocyanate radical, hexafluorophosphate radical, p-toluenesulfonate radical or trifluoromethanesulfonic acid radical as the anion. The method has the advantages of wide technological range, mild temperature condition, adequate pressure, quick spinning speed and so on, can prepare the regenerated cellulose fibers with superior performance and complete specifications, and has low production cost, high production efficiency and wide application prospect.
Owner:INST OF CHEM CHINESE ACAD OF SCI +1

Absorbent sheet having regenerated cellulose microfiber network

An absorbent paper sheet for tissue or towel includes from about 99 percent to about 70 percent by weight of cellulosic papermaking fiber and from about 1 percent to about 30 percent by weight fibrillated regenerated cellulose microfiber which was regenerated form a cellulosic dope utilizing a tertiary amine N-oxide solvent or an ionic liquid. Fibrillation of the microfiber is controlled such that it has a reduced coarseness and a reduced freeness as compared with unfibrillated regenerated cellulose microfiber from which it is made and provides at least one of the following attributes to the absorbent sheet: (a) the absorbent sheet exhibits an elevated SAT value and an elevated wet tensile value as compared with a like sheet prepared without fibrillated regenerated cellulose microfiber; (b) the absorbent sheet exhibits an elevated wet / dry CD tensile ratio as compared with a like sheet prepared without fibrillated regenerated cellulose microfiber; (c) the absorbent sheet exhibits a lower GM Break Modulus than a like sheet having like tensile values prepared without fibrillated regenerated cellulose microfiber; or (d) the absorbent sheet exhibits an elevated bulk as compared with a like sheet having like tensile values prepared without fibrillated regenerated cellulose microfiber. In some embodiments, the pulp is pre-treated with debonder to enhance the wet / dry CD tensile ratio of the sheet.
Owner:GPCP IP HLDG LLC

Graphene blend regenerated cellulose fiber and preparation method thereof

The invention relates to a graphene blend regenerated cellulose fiber. The graphene blend regenerated cellulose fiber is prepared by mixing an oxidized graphene solution and a regenerated cellulose solution, molding a mixture through a viscose wet spinning process and reducing the mixture; the dry breaking strength of the graphene blend regenerated cellulose fiber is not less than 1.8 cN/dtex, the wet breaking strength of the graphene blend regenerated cellulose fiber is not less than 0.9 cN/dtex, the dry breaking elongation of the graphene blend regenerated cellulose fiber is not less than 16%, the mass specific resistance of the fiber is 1-9X106 omega.g/cm2, and the thermal decomposition temperature of the fiber is not lower than 400 DEG C; and with the regenerated cellulose fiber as a matrix, the prepared graphene blend regenerated cellulose fiber has the advantages of good moisture absorption, good air permeability, soft handle and good dyeing performance and has the characteristics of ultrahigh strength, thermal conductivity, electric conductivity, antibacterial property and the like of the graphene; the conductive and thermal properties of the fiber are both improved by being compared with those of the traditional regenerated cellulose fiber; the antibacterial property of the fiber is additionally provided; and the graphene blend regenerated cellulose fiber provided by the invention has the advantages of simple production process, easiness in operation, and higher yield. People estimate that the developed graphene blend regenerated cellulose fiber can be widely applied to the field of costumes, industrial textiles and the like.
Owner:JINAN SHENGQUAN GROUP SHARE HLDG +1

Method of using optically-activ ated particles in cosmetic preparations

Optically-activated particles for use in cosmetic preparations. The optically-activated particles include a plurality of substrate particles selected from the group consisting of nylons, acrylics, polyesters, other plastic polymers, natural materials, regenerated cellulose, metals and minerals; an optical brightener chemically bonded to each of the plurality of substrate particles to form integral units in the form of optically-activated particles for diffusing light to reduce the visual perception of skin imperfections, including cellulite, shadows, skin discolorations, and wrinkles; and each of the optically-activated particles are encapsulated with a UV transparent coating to increase the diffusion light to further reduce the visual perception of the skin imperfections. The encapsulated optically-activated particles are able to absorb ultraviolet radiation and emit visible light; and the encapsulated optically-activated particles are able to both scatter and absorb light in a diffuse manner in order to reduce the visual perception of skin imperfections, including cellulite, wrinkles, shadows, and skin discolorations, when the optically-activated particles are applied to the skin surface. The encapsulated optically-activated particles are used in the making of cosmetic preparations such as skin lotions, creams, shampoos, body and skin rinses, bath gels, soaps, hair conditioners, color conditioners and rinses, hair color solutions, foundation powders (compressed or loose), tooth pastes, oral rinses, and any acceptable cosmetic vehicle or medium.
Owner:PNC BANK NAT ASSOC

Permanent flame-retardant multifunctional fabric and making method thereof

The invention discloses permanent flame-retardant multifunctional fabric and a making method thereof and belongs to the technical field of protecting fabric and processing thereof. The permanent flame-retardant multifunctional fabric is formed by interweaving warp yarn and weft yarn. The permanent flame-retardant multifunctional fabric is characterized in that a raw material by which each of the warp yarn and the weft yarn is made is a mixture of high-temperature-resistant natural flame-retardant fibers and natural fibers or regenerated cellulose fibers, the high-temperature-resistant natural flame-retardant fibers account for 40-90% of the fabric, the natural fibers or the regenerated cellulose fibers account for 8-58% of the fabric, and antistatic filaments are woven in the warp yarn at intervals and account for 1-3% of the fabric. The permanent flame-retardant multifunctional fabric can permanently maintain ideal flame-retardant characteristics which do not decline with passage of time or increase of washing times, demonstrates high environment friendliness, breathability and wearing comfortability and has safety, and excellent antistatic performance can be guaranteed lastingly; processes are simplified, so that the above advantages of the fabric can be demonstrated comprehensively.
Owner:CHANGSHU BAOFENG SPECIAL FIBER
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