6322results about "Biochemical fibre treatment" patented technology

Composite structures composed of a fibril core and a polymeric coat and designed capable of encapsulating both hydrophobic and hydrophilic bioactive agents while retaining the activity of these agents are disclosed. Further disclosed are processes of preparing such composite structures, and medical devices and disposable articles made therefrom.

The present invention comprises methods and compositions for antimicrobial silver compositions comprising silver nanoparticles. The present invention further comprises compositions for preparing silver nanoparticles comprising at least one stabilizing agent, one or more silver compounds, at least one reducing agent and a solvent. In one aspect, the stabilizing agent comprises a surfactant or a polymer. The polymer may comprise polymers such as polyacrylamides, polyurethanes, and polyamides. In one aspect, the silver compound comprises a salt comprising a silver cation and an anion. The anion may comprise saccharinate derivatives, long chain fatty acids, and alkyl dicarboxylates. The methods of the present invention comprise treating devices with the silver nanoparticle compositions, including, but not limited to, such devices as woven wound care materials, catheters, patient care devices, and collagen matrices. The present invention further comprises treatment of humans and animals wacr6ith the antimicrobial devices described herein.

Composite structures composed of a fibril core and a polymeric coat and designed capable of encapsulating both hydrophobic and hydrophilic bioactive agents while retaining the activity of these agents are disclosed. Further disclosed are processes of preparing such composite structures, and medical devices and disposable articles made therefrom.

The present invention relates to polymeric medical articles comprising combinations of triclosan and silver-containing compounds. It is based, at least in part, on the discovery that these agents act synergistically, thereby permitting the use of relatively low levels of both agents. While it had been previously found that triclosan can be particularly useful when used in conjunction with chlorhexidine, it has been further discovered that medical articles having suitable antimicrobial properties may be prepared, according to the present invention, which contain triclosan without chlorhexidine. Such medical articles offer the advantage of preventing or inhibiting infection while avoiding undesirable adverse reactions to chlorhexidine by individuals that may have sensitivity to chlorhexidine.

A bedding article for a domestic animal comprising an outer textile casing defining a geometric shape for supporting a domestic animal, an inner filling, and a microbe-inhibiting agent or property applied to at least one of the outer textile casing and the inner filling. The bedding article may be fabricated in various shapes, designs, and styles; e.g., rectangular, circular, elliptical, with or without upstanding side walls, etc. A process for applying the microbe-inhibiting agent or property to at least one on the outer textile casing and the inner filling is provided. Application methods include spraying, dipping, brushing, and rolling the microbe-inhibiting agent or property onto at least one of the outer textile casing and the inner filling. An alternative embodiment includes an outer textile casing defining a geometric shape for supporting a domestic animal, an inner filling, a lining therebetween, and a microbe-inhibiting agent or property applied to at least one of the outer textile casing, the inner lining, and the inner filling.

The invention provides tissue engineering compositions and methods wherein three-dimensional matrices for growing cells are prepared for in vitro and in vivo use. The matrices comprise biodegradable polymer fibers capable of the controlled delivery of therapeutic agents. The spatial and temporal distribution of released therapeutic agents is controlled by use of defined nonhomogeneous patterns of therapeutic agents in the matrices.

The invention provides tissue engineering compositions and methods wherein three-dimensional matrices for growing cells are prepared for in vitro and in vivo use. The matrices comprise biodegradable polymer fibers capable of the controlled delivery of therapeutic agents. The spatial and temporal distribution of released therapeutic agents is controlled by use of defined nonhomogeneous patterns of therapeutic agents in the matrices.

A process is provided to produce a concentrated aqueous peracid solution in situ using at least one enzyme having perhydrolase activity in the presence of hydrogen peroxide (at a concentration of at least 500 mM) under neutral to acidic reaction conditions from suitable carboxylic acid esters (including glycerides) and / or amides substrates. The concentrated peracid solution produced is sufficient for use in a variety of disinfection and / or bleaching applications.

A material substrate having at least part of a surface treated with an antimicrobial composition is described. The antimicrobial composition exhibits at least a 3 log10 CFU reduction within a period of about 30 minutes after contact with various species of a broad spectrum of microorganisms. The substrate can be a nonwoven material that has good fluid barrier properties, which can be used in protective garments and sheets. Methods for manufacturing and imparting the antimicrobial treatment to the substrate are also provided.

An odor-inhibiting fiber having a cellulosic fiber and an odor-inhibiting formulation. The odor-inhibiting formulation may contain an odor-inhibiting agent, such as a biocide, an enzyme, a urease inhibitor. The odor-inhibiting formulation also may contain a liquid carrier such as a hydrophobic or hydrophilic organic liquid, or a mixture of a hydrophobic and hydrophilic organic liquid. The cellulosic fiber is impregnated with the odor-inhibiting formulation to produce fiber having odor-inhibiting characteristics. The resultant odor-inhibiting fiber is useful in making absorbent articles with odor-inhibiting characteristics. The fiber of the embodiments prevents odor by inhibiting bacteria growth and ammonia production, especially when used in an absorbent article such as a diaper or adult incontinence device.

Durable non-electrically conductive metal treatments (such as coatings or finishes) for yarns and textile fabrics. Such treatments preferably comprise silver and / or silver ions; however, other metals, such as zinc, iron, copper, nickel, cobalt, aluminum, gold, manganese, magnesium, and the like, may also be present or alternatively utilized. Such a treatment provides, as one example, an antimicrobial fiber and / or textile fabric which remains on the surface and does not permit electrical conductivity over the surface. The treatment is extremely durable on such substrates; after a substantial number of standard launderings and dryings, the treatment does not wear away in any appreciable amount and thus the substrate retains its antimicrobial activity (or other property). The method of adherence to the target yarn and / or fabric may be performed any number of ways, most preferably through the utilization of a binder system or through a transfer method from a donor fabric to a target textile fabric in the presence of moisture and upon exposure to heat. The particular methods of adherence, as well as the treated textile fabrics and individual fibers are also encompassed within this invention.

The present invention relates to a method of removing a biofilm, which comprises at least the following steps, carried out simultaneously or consecutively: a) a solution comprising an enzyme mixture containing at least one enzyme chosen from the group of proteases, at least one enzyme chosen from the group of esterases and an amylase is prepared; b) a solution comprising a detergent with an alkaline pH is prepared; and c) said solutions are applied, by washing or by circulation, to the surface to be treated. It also relates to a kit intended for removing a biofilm, which comprises the solutions defined above and the compositions comprising the said solutions.

The present invention provides a composition having disinfectancy & residual antimicrobial activity, where the antimicrobial composition comprises an organosilane quaternary compound and a quaternary ammonium compound and other formulations. Also provided are methods of disinfecting an article or providing an antimicrobial coating to an article using the same.

Carpeted floor covering articles comprising carpet pile fibers to which a topical antimicrobial application of solid particles has been applied either during or after product manufacture (such as part of a cleaning or treatment process) are provided. Such a topical treatment includes specific inorganic antimicrobial metal ion-based solid compounds, such as silver ion-exchange compounds, silver zeolites, and / or silver glasses, which may or may not be dispersed within a liquid medium for ease in handling and application. Such treatments also optionally include compositions of stain resistant agents, anti soil-redeposition compounds and liquids, surfactants, antistatic agents, and the like, to impart other characteristics to the target carpeted products. Such carpeted products thus exhibit excellent antimicrobial characteristics at both the surface of the carpet pile, as well as within the pile itself. Furthermore, it has been found that application of such solid metal-ion based antimicrobials permits the ability to increase antimicrobial activity for the target carpet product after vacuuming.

Nanosilver coated bacterial cellulose nanofiber and a method of producing the nanosilver coated bacterial cellulose nanofiber. The nanosilver coated bacterial cellulose nanofiber is produced by preparing a suspension of bacterial cellulose fibers, oxidizing bacterial cellulose fibers; adding the thio-group to the polymer backbone; reacting the resulting product with silver proteinate and enhancing the nanosilver particle size. The nanosilver coated bacterial cellulose nanofibers exhibit antimicrobial properties.

A fibrous insulation has insulation fibers (104) with a fungicide in a dispersed additive affixed to the fibers (104), and a method of making a fibrous insulation by dispersing a fungicide and a dispersed additive on the fibers (104) followed by affixing the dispersed additive on the fibers (104). The method produces thermal, acoustic, duct liner or board insulation either as loose fill insulation or as an insulation mat.

The invention relates to a fluorescent pseudomonad DA4 strain as well as an acquisition method and application thereof. The fluorescent pseudomonad DA4 strain has pectase and hemicellulase producing capacity and flax degumming activity. The fluorescent pseudomonad strain screened by the invention has fast propagation, high antipollution capacity and good heat and alkali resistance; since a composite degumming enzyme solution is used for flax degumming, the degumming period is shortened greatly, and the system and the culturing process is safe for operation without toxicity or environmental pollution; the invention can shorten the flax degumming period, enhance the flax yield and the strength of flax fibers, improve the quality of the flax fibers by adopting the composite degumming enzyme solution for flax microbial degumming, thereby being beneficial to popularization; in addition, the invention can not only be used for flax raw stem degumming, roving scouring and the biological pretreatment of flax fabrics, but also can be used for the degumming and the biological pretreatment of hemp bast fibers, i.e. ramie, jute, hemps, and the like.

The present invention relates to fiber compositions comprising gels or hydrogels. The invention further relates to the composition of a gel or hydrogel loaded biodegradable fiber and methods of fabricating such fibers. The present invention further provides tissue engineering and drug-delivery compositions and methods wherein three-dimensional matrices for growing cells are prepared for in vitro and in vivo use. The invention also relates to methods of manipulating the rate of therapeutic agent release by changing both the biodegradable polymer properties as well as altering the properties of the incorporated gel or hydrogel.

The present invention provides a yarn with antimicrobial effects. The antimicrobial antifungal effect of the yarn is derived from nanosilver particles (diameter between 1 and 100 nm) which are adhered to the yarn. The yarn contains fibers which are made of cotton, linen, silk, wool, leather, blending fabric, synthetic fiber, or any combination thereof. The yarn can be used to make cloth to be used particularly for treating patients with burns or wound. The cloth made from the antimicrobial yarn can be further used to make clothes such as underwears, socks, shoe cushions, shoe linings, bed sheets, pillow cases, towels, women hygiene products, laboratory coats, and medical robes. The present invention also provides a method for making the antimicrobial yarn.

The present invention provides an anti-pathogenic air filtration medium comprising a fibrous substrate whose fibers are coated with coating comprising a polymer. The coating provides an environment that is destructive to airborne pathogens. In particular, the filter medium can be used in a building air handling system that both filters the air and eliminates pathogens. The filter medium also can be used to create a new bio-protective gas mask that not only offers protection against chemical warfare agents, but also provides protection against biological pathogens.

The invention provides storage mildew-proof and moth-proof packaging hemp cloth and a preparation method thereof. The hemp cloth comprises green harmless storage protective agent and is prepared by taking common packaging hemp cloth as a material and adding 0.01-10wt% of storage protective agent. The preparation method comprises the following steps of: dissolving the storage protective agent in a solvent to prepare a solution, then impregnating the hemp cloth in the protective agent solution, removing the solution after the hemp cloth sufficiently absorbs the solution, and drying; or dissolving the storage protective agent in the solvent, then uniformly spraying the protective agent solution on the hemp cloth and drying the hemp cloth after the hemp cloth sufficiently absorbs the protective agent solution to prepare the storage mildew-proof and moth-proof packaging hemp cloth. The storage hemp cloth is used for packaging tobaccos or crops, can realize the whole process dynamic and real-time protection of the tobaccos, the crops and the like in purchase, transport and storage processes, protect products from mildew and moths, effectively prevent the mildew and the moths from spreading between bags and prevent the tobaccos, the crops and the like which are soaked by rain water from mildewing. Besides, the invention has an important function for reducing environment pollution and hidden safety danger which are caused by common technologies.

The invention discloses a cold rolling stack dying method of face fabric, comprising immerging, stacking and water washing. The immerging step comprises cold rolling stack pretreatment, obtaining half finished product and drying rolling. The stacking step comprises coiling and stacking. The water washing step comprises washing with water, washing soap, washing with water and drying. The inventive method has advanced and reasonable process, with stable quality, energy-saving and environment friend functions, while the invention has simple process, low cost, and high fixation yield, or the like.

The present invention relates to methods for preventing, removing, reducing, or disrupting biofilm present on a surface, comprising contacting the surface with an alpha-amylase derived from a bacterium.

A process is provided to produce a concentrated aqueous peracid solution in situ using at least one enzyme having perhydrolase activity in the presence of hydrogen peroxide (at a concentration of at least 500 mM) under neutral to acidic reaction conditions from suitable carboxylic acid esters (including glycerides) and / or amides substrates. The concentrated peracid solution produced is sufficient for use in a variety of disinfection and / or bleaching applications.

A wiper having a controlled release anti-microbial agent therein for providing anti-microbial cleansing of surfaces is provided. The wiper is formed from an absorbent base web to which an anti-microbial formulation is adhered. The formulation includes an anti-microbial agent that is capable of being controllably released from the wiper. In some embodiments, a polymer mixture may be employed to control the rate of release of the anti-microbial agent. Various anti-microbial agents, such as metal ions and organic compounds may be employed.

A machine cleaner tablet comprising from about 10 to about 75% of a limescale remover acid, from about 1 to about 20% of low foaming non-ionic surfactant, from about 0.5 to about 5% of a detergency enzyme and wherein the tablet has a pH measured as a 1% solution in distilled water at 20° C. in the range from about 1 to about 5. The tablet is used for cleaning the interior of automatic dishwashers, food processing machines and the like.

Nanosilver coated bacterial cellulose nanofiber and a method of producing the nanosilver coated bacterial cellulose nanofiber. The nanosilver coated bacterial cellulose nanofiber is produced by preparing a suspension of bacterial cellulose fibers, oxidizing bacterial cellulose fibers; adding the thio-group to the polymer backbone; reacting the resulting product with silver proteinate and enhancing the nanosilver particle size. The nanosilver coated bacterial cellulose nanofibers exhibit antimicrobial properties.

The invention provides a method for dyeing fabric by using a dye, belonging to the technical field of textile printing and dyeing and aiming to the solve the problems of complex process, low dyeing rate, poor dyeing uniformity and poor color fastness and hand feel of dyed fabric of the existing method for dyeing the fabric by using the dye. The method comprises the following steps of: desizing the fabric, scouring, bleaching and mercerizing; adding the dye, a cationic modifier, a leveling agent, a dispersant, an alkaline reagent and a wet rubbing fastness enhancer to water, and mixing uniformly to prepare a dyeing solution; soaking the fabric into the dyeing solution, and controlling temperature and liquor ratio to dye; steaming the dyed fabric for colour fixation, washing by water and drying to finish dyeing the fabric by using the dye. The method for dyeing the fabric by using the dye is simple, ensures the high dyeing rate and the uniform dyeing, and ensures that the dyed fabric has good washing fastness and rubbing fastness and a soft feel.

A method for stabilizing a dilute peracetic acid solution containing less than about 5 wt % peracetic acid by controlling the concentration of hydrogen peroxide and the mole ratio of hydrogen peroxide to acetic acid and by introducing a stabilizer to provide sequestering activity. The method is particularly useful for the long-term stabilization of dilute peracetic acid solutions. Stabilized dilute peracetic acid solutions are also within the scope of this invention.