424results about How to "Improve bleaching effect" patented technology

The present invention relates to formulation components, such as organic catalyst compounds having increased stability, compositions and laundry methods employing such organic catalyst compounds. More particularly, this invention relates to organic catalysts compounds such as quaternary imine bleach boosting compounds, quaternary oxaziridinium bleaching species, modified amines and amine oxides, compositions and laundry methods employing such organic catalyst compounds.

Laundry multi-compartment pouch made from a water-soluble film and having at least two compartments. The pouch of the present invention comprises a composition containing a solid component and a liquid component, wherein the solid component contains a peroxide source and a mixture of specific polymer.

Dental treatment trays and strips used to deliver a dental bleaching composition to a person's teeth are formed from a moisture resistant barrier material and include a bleaching agent destabilizer disposed on an inner treatment surface of the barrier layer that is positioned against the person's teeth during use. The bleaching agent destabilizer may be compounded with the moisture resistant material or otherwise disposed relative to the barrier layer so that at least some destabilizer is positioned on the inner treatment surface of the tray or strip so as to contact the dental bleaching composition during use.

A solid fabric treatment detergent composition including: (i) detersive surfactant; (ii) perhydrolase; (iii) substrate for perhydrolase; (iv) source of hydrogen peroxide; (v) from 0 wt % to 10 wt % zeolite builder; (vi) from 0 wt % to 10 w % phosphate builder; and (vii) optionally, from 0 wt % to 10 wt % silicate salt, wherein the upon dilution in de-ionized water to a concentration of 1 wt % at 20° C., the composition has a pH in the range of from 7.6 to 8.8.

A hard surface detergent composition is provided, said composition comprising a peroxygen bleach capable of exhibiting bleaching properties at a pH of below 9, and an amino ketone or derivative thereof bleach activator, and wherein a 1% wt solution in distilled water at 25° C. of the composition has a pH lower than 9. Potassium monopersulphate is the preferred bleach compound and diethyl amino acetone or derivative thereof is the preferred bleach activator. The compositions exhibit good bleaching performance at pHs of less than 9.

Novel laccase mediators, including carboxyamido and cyano derivatives of 2,6-dimethoxyphenol that exhibit improved hydrolytic stability and good bleaching performance. The novel laccase enzymes may be employed in conjunction with the 2,6-dimethoxyphenol derivatives of this invention to provide an improved method for bleaching denim fabrics.

The invention relates to a textile hydrogen peroxide bleaching stabilizer, comprising the following components: chelating agent, surfactant, magnesium inorganic salt, sodium silicate, scale inhibitionand dispersion agent and water. The scale inhibition and dispersion agent is polyepoxysuccinic acid or sodium salt thereof and has good scale inhibiting dispersing property to silicon so that silicate scale can not deposit and adhere to the surface of fabric; the bleached product has ideal whiteness and no harsh and hard handfeel and can not pollute the inner wall of mechanical equipments.

To provide two-agent type liquid bleaching compositions having excellent bleaching effect even if a mixing ratio of the two agents varies, great usability, and no problem in storage stability, two-agent type liquid bleaching compositions contains an agent A and an agent B filled and held in separate chambers of a container and comprises the agent A made of constituents containing 0.1 to 10% by weight of hydrogen peroxide and water and provided with certain buffering capacity, and the agent B made of constituents containing an alkali agent and water and provided with certain buffering capacity.

A stabilizing agent for peroxide-bleaching procedure includes (A) a component including a homopolymer or copolymer of alpha -hydroxyacrylic acid or water soluble salt or polylactone of the homo- or co-polymer, (B) a component including a homopolymer or copolymer of acrylic acid, methacrylic acid and/or maleic acid and water-soluble salt of the homo- or co-polymer, (C) a component including DTPA, TTHA or water-soluble salt thereof and optionally (D) a component including a water-soluble inorganic Mg salt and is used to pretreat a fiber material with a pretreating liquid containing the stabilizing agent before bleaching with peroxide, or to bleach the fiber material by a bleaching liquid containing a peroxide bleaching agent and the stabilizing agent.

A portable dental prophylaxis and bleaching system is provided for simultaneous tooth polishing and bleaching. It includes an oscillatory driving handpiece, a dental angle with a disposable rubber cup assembly, a dual-component dispenser, and a disposable mouthpiece. The battery-powered handpiece transforms a continuous rotation through a driving cam into a rotary oscillation which is then transferred through the attached dental angle to the rubber cup with an obtuse angle at its distal output end. The dispenser is operated manually to correctly apportion and mix the dual treatment materials into the rubber cup. In order to provide longer shelf life and effective bleaching action, the treatment materials are maintained at optimal pH values in separate compartments within the dispenser before use. The disposable mouthpiece is shaped for easy access to the user's teeth while protecting the gum surfaces. The system can be used both in dental clinics and at home.

The invention relates to a surfactant used in the production of washing powder, in particular to a method for producing sodium fatty acid methyl ester sulfonate, which solves the problem that the prior art cannot realize continuous, stable industrialized mass production. Hydrogenated palm-methyl stearate is adopted as material, and is sulfonated by SO3 gas on a multi-tube film reactor, steps, such as aging, reesterification, dealcoholization, neutralization, bleaching and vacuum drying, are then sequentially carried out, so that sodium fatty acid methyl ester sulfonate product is obtained, the content of MES is more than 80 percent, the content of disodium salt is less than 5 percent, the content of free oil is less than 2.5 percent, the content of sodium methyl sulfate is less than 8 percent, and color is less than 60 klett(5 percent A.M). Because highly selective catalyst is added in the aging process, the production of deep-colored by-product is reduced; because the reesterification reaction and the bleaching reaction are separately carried out, the safety of reaction is enhanced, and the consumption of methanol as solvent is greatly reduced; because vacuum dealcoholization is carried out before sulfoacid neutralization, industrialized operation can be easily carried out, and meanwhile, the safety problem of methanol in the subsequent bleaching step is eliminated.

A bark bleaching process; the steps are as follows that hydrogen peroxide, sodium hydroxide, sodium silicate and magnesium chloride are taken in I bleacher according to a certain proportion to make bleaching liquid: the bark is encased in a bark bleaching frame and the frame is soaked in the bleacher; a pump is adopted to continuously circulate the bleaching liquid in the bleacher; at the same time, steam is input for heating the bleaching liquid and the temperature is kept constant between 60 to 70 Celsius degrees; the constant temperature is kept for 4 to 6 hours; the bark bleaching frame is taken out of the in I bleacher and put into II bleacher filled with oxalic acid solution; a liquid compulsory circulation device is used to make the liquid in the bleacher continuously circulate; the bark bleaching frame is taken out after the frame is soaked for continuous 30 minutes; the bleaching frame is washed with pressed clean water and the drying treatment is implemented at last. The present invention also discloses a special bark bleaching frame and snakelike parting strip for angle steel welding. The present invention boasts of low investment on equipment, high production efficiency and excellent bleaching effect.

The invention discloses a heavy pure cotton fabric enzyme padding and stacking pretreatment process after normal pressure plasma treatment, and belongs to the technical field of dyeing and finishing pretreatment. The technological process comprises the following steps of: carrying out the normal pressure plasma treatment on the singed heavy pure cotton grey fabric; carrying out refining enzyme liquid padding on the fabric; then stacking at room temperature; then carrying out oxygen bleaching and low alkali mercerization; and finally sufficiently rinsing to complete the pretreatment process of the heavy pure cotton fabric. According to the method, the process has the characteristics of being good in treatment effect, little in fabrics strength damage, high in quality, soft in hand feeling, high in capillary effect and good in glossiness; the method provides a condition of high color yield for the subsequent dyeing and printing processing; the process operation is simple and high in controllability; the treated waste water, the pH value and the energy consumption of the process are far lower than the treated waste water, the pH value and the energy consumption of the traditional strong base scouring process; and the process is a clean production process meeting the environmental protection requirement, so that the sewage treatment burdens of enterprises are greatly reduced, the process is very high in social benefit and market prospect, and the process conditions are optimized.

The invention discloses gel for bleaching and whitening teeth, which comprises two parts, namely whitening gel and catalyzing gel, wherein the mixture ratios of the whitening gel and the catalyzing gel are respectively that: the whitening gel consists of the following raw materials in percentage by weight: 5 to 40 percent of peroxide, 10 to 80 percent of humectant, 0.5 to 3.0 percent of adhesive, 1.0 to 10.0 percent of stabilizing agent, 1.0 to 10 percent of anti-allergic agent, and the balance being purified water; and the catalyzing gel consists of the following raw materials in percentage by weight: 10 to 80 percent of humectant, 0.5 to 3.0 percent of adhesive, 0.01 to 1 percent of catalyst, 0.1 to 1 percent of preservative, 0.8 to 2 percent of essence, and the balance being purified water. During the use, the whitening gel and the catalyzing gel are mixed evenly according to the proportion of 4: 1, and are directly coated on the surfaces of the teeth. The gel for the bleaching and whitening the teeth has the characteristics of obvious bleaching effect, stability, and durability, can effectively reduce allergic symptoms of the teeth during the whitening treatment, and is suitable for the whitening treatment of the teeth under various conditions.

The invention relates to a method for low-temperature activated bleaching by using Schiff base metal complexes, belonging to the field of methods for low-temperature activated bleaching. The method comprises the following steps: (1) taking the Schiff base metal complexes, 20-50g/L of H2O2, penetrating agents and stabilizing agents and then mixing the substances to obtain bleaching operating fluid with pH value of 7-11; (2) padding the fabrics in the bleaching operating fluid; and (3) carrying out cold pad-batch or steaming on the padded fabrics and then washing the fabrics with water. The method is simple, low in cost, high in production efficiency, environment-friendly, energy-saving and suitable for industrialization and reduces the bleaching temperature, shortens the stacking time and reduces the fabrics damage under the premise of achieving good bleaching effect.

A process for mechanically preparing the alkaline hydrogen peroxide pulp from raw straw materials includes such steps as immersing raw straw materials in hot water, squeezing for dewatering, chemical pretreating, grinding, enzyme treating with the solution of semi-cellulase or the solution of semi-cellulase and lignin peroxidase, chemical pretreating, and grinding. The resultant pulp features high whiteness and strength and easy treatment of its sewage.

The invention relates to the production field of titanium dioxide and particularly relates to a bleaching method of metatitanic acid in titanium dioxide production by a sulfuric acid method. The bleaching method comprises the following steps: a step I of adding metatitanic acid which is qualified by water-washing and contains Fe<3+> impurities into a reaction pan, and adding industrial sulfuric acid after adding water and uniformly stirring; a step II of adding EDTA (Ethylene Diamine Tetraacetic Acid)-2Na into the metatitanic acid sizing agent of the step I, and keeping the temperature in the reaction pan between 40 DEG C and 45 DEG C; a step III of cooling the metatitanic acid sizing agent obtained in the step II, vacuum-filtering and water-washing. The invention provides a bleaching method of metatitanic acid in titanium dioxide production by a sulfuric acid method, which is simple in process, easy to realize, little in sulfuric acid dosage, low in operating environment, short in bleaching time, free from residue pollution and good in bleaching effect.

The invention discloses an ECF bleaching technology of fast growing poplar by a NaOH-AQ pulp biochemical method. The technology provided by the invention is characterized by comprising the following steps: (1) steaming: taking fast growing poplar chips, stewing the fast growing poplar chips in a digester to obtain virgin pulp, washing and screening to obtain paper pulp; (2) xylanase pretreatment; and (3) ECF bleaching: bleaching the above paper pulp which has undergone enzyme treatment, wherein the bleaching process is ODED and comprises steps of: oxygen delignification or reinforced oxygen delignification is firstly carried out on the paper pulp which has undergone enzyme treatment; after oxygen delignification, the paper pulp is washed and D-stage chlorine dioxide bleaching is then carried out; after D-stage chlorine dioxide bleaching, the paper pulp is washed and then E stage is performed; and after E stage, the paper pulp is washed and secondary D stage is carried out. According to the invention, xylanase is used to pretreat the paper pulp, and then bleaching is performed by the ODED bleaching process so as to obtain the paper pulp with higher whiteness and viscosity. Under the condition that the total dosage of ClO2 is 1%, the whiteness of bleached pulp reaches up to 88.6% ISO as the highest level and to 88.1% ISO as the lowest level.

The invention relates to a low-quality potash feldspar iron removal purification method. According to the method, firstly, potassium feldspar is crushed to be made into particles; then, the potassiumfeldspar particles are ground into sand powder by a ball milling process; next, the obtained sand powder is screened; next, magnetic selection is performed by using a multistage strong magnetic selection machine; finally, the potassium feldspar sand powder subjected to the magnetic selection is subjected to acid washing in sulphuric acid by a microwave hydrothermal method; the high-quality and high-purity potassium feldspar sand powder is obtained. The purification process meets the requirement of domestic industries of glass, ceramics, enamel and the like on high-whiteness potash feldspar sand powder; in addition, the microwave hydrothermal technology is applied to the potash feldspar ore purification aspect; the characteristics of high production efficiency, low energy consumption, harmlessness, no pollution and the like are realized; the method belongs to a green and environment-friendly iron removal purification process.

The present invention provides polyphenol oxidases from bacteria, particularly from the genus Bacillus including, without limitation, B. licheniformis, B. natto, and B. sphaericus, In some embodiments, the polyphenol oxidase has an optimum reaction pH of about 7; an optimum reaction temperature between 60° C. and 80° C.; and a molecular weight of 51,000 measured by gel filtration chromatography. The enzymes of the invention are useful for oxidizing and/or bleaching a variety of substrates.

The invention discloses a production process for purified cotton with high whiteness. The production process comprises the steps of opening cotton linters by an opener; spraying the cotton linter ribs by using a 25g/L sodium hydroxide solution; squeezing the cotton linter ribs by a squeezer after spraying; putting the squeezed cotton linter ribs in a spherical digester, adding sodium hydroxide with a mass concentration of 3.5-4.0% to carry out alkaline cooking; defibering size after the alkaline cooking; degritting; adding dilute sulphuric acid to carry out acid treatment; adding sodium hypochlorite in the size for bleaching; outputting the size; squeezing the white size; drying the white size and packaging to store. The cotton linter ribs are used as raw materials, partial impurities are removed by opening cotton, removing impurities and cooking the size; cotton fibers wound into balls in the size are dispersed and straighten by the defibering; impurities in the size are further removed by degritting, and thus the quality of the purified cotton is increased and the purified cotton with higher whiteness is obtained.

Treated peroxycarboxylic acid bleaching compositions and methods of using the same are provided to enhancing bleaching performance of various peroxycarboxylic acids. Peroxycarboxylic acid peroxycarboxylic acid compositions are combined with non-metal bleach activators, preferably polyethyleneimines. The invention further relates to methods employing the enhanced bleaching compositions.

The invention discloses a method for extracting agar from gracilaria with an enzymatic method. After gracilaria is soaked, cellulose and protease are added for enzymolysis, and gracilaria slag in enzymatic hydrolysate is filtered; after the gracilaria slag is subjected to bleaching, acidification and washing treatment, an appropriate amount of water is added, water is boiled to 95 DEG C for glue extraction, and enzyme activity is killed; a glue solution is filtered while hot, 95% ethyl alcohol with a volume of two to three times of that of the glue solution is added to the glue solution rapidly, precipitation is centrifuged or filtered, dehydration is performed twice with absolute ethyl alcohol, and drying is performed, so that an agar product is obtained. The main ingredient of agar in gracilaria is separated with a clean and efficient biological enzyme treatment technology, and the defects of a conventional alkali treatment technology are overcome; before glue extraction is performed on gracilaria, sodium hypochlorite is replaced with hydrogen peroxide for bleaching treatment, the bleaching effect is remarkable, and the problems of chloride ion residues and pollution caused by a sodium hypochlorite bleaching method are solved; and finally, agar is rapidly precipitated from the glue solution with a simple, convenient and feasible alcohol precipitation method, the production period is greatly shortened, and the cost is greatly reduced.