31results about How to "Whiteness stability" patented technology

The invention relates to a heat-resisting flame-retardant fiberglass product for industrial heat preservation and a preparation method thereof. The preparation method of the fiberglass product comprises the following steps of: firstly evenly mixing all components in percentage by mass according to a gelatine prescription to prepare a glue solution, forming a coating on fiberglass cloth by adopting the glue solution in a coating or soaking cementing way, and finally drying and curing to obtain the fiberglass product; wherein the coating amount of the coating on the surface of the fiberglass cloth is 20 to 220g/m<2>, and the coating weight is 10 to 40 percent of the fiberglass product; and the gelatine is prepared by mixing all components. The finished product obtained after drying and sizing is used for heat insulation, flame retarding and heat preservation outside the wall of an industrial pipeline or a vessel, and is especially suitable for occasions which have higher requirements for heat preservation and flame retarding.

The invention discloses paper pulp and a high-bulk energy-saving environment-friendly card prepared from the same. The paper pulp is prepared from the following components in percentage by weight: 1 to 10 percent of bleached sulfate softwood pulp, 30 to 70 percent of bleached sulfate hardwood pulp, 20 to 50 percent of chemithermomechanical pulp, and 10 to 30 percent of alkaline peroxide mechanical pulp. The invention also provides the copperplate card prepared from the paper pulp and other components. The paper made with the paper pulp is high in bulk, the gram weight of the paper is effectively controlled to be in a certain range, the paper pulp is prevented from being put into production excessively, and the defibrination energy consumption of a paper machine is reduced correspondingly, so that the effects of environment friendliness and energy saving are effectively achieved.

The invention discloses a ceramic tile with a high whiteness and no radiation as well as the manufacturing method thereof. The weight percents of the main raw materials of the ceramic tile is: 15-60 wt.% of burning talcum, 15-30 wt.% of feldspar, 5-30 wt.% of porcelain sand, 20-28 wt.% of black mud. The steps of manufacturing method is as follows: (1) calcining the talcum; (2) the manufacturing process is: raw materialsbatchingball millingremoving zirconiumspraying and millingmouldingdryingpenetratingburningpolishing; (3) doing a strict anti-pollution treatment after polishing. The calcining temperature of the talcum is: 1200 DEG C; the calcining temperature of the ceramic tile is 1210-1230 DEG C; burning period is: 60-80 minutes; whiteness is: about 80 DEG. The invention firstly does a pre-burning treatment to the talcum material in 1200 DEG C, thus it manages its sheet structure and removes volatile with a high temperature. The disposed material is without greasy texture and the dosage will not influence the products molding.

The invention relates to tourmaline negative ion powder with high performance and a coating process. The tourmaline negative ion powder comprises tourmaline, a coupling agent and a coating agent, wherein the occupied weight ratio of the tourmaline is 25-35%, the occupied weight ratio of the coupling agent is 1-3%, and the occupied weight ratio of the coating agent is 62-74%. The tourmaline negative ion powder is obtained by coating, whitening and modifying the tourmaline and can be used as stuffing powder for preparing a functional coating; and the tourmaline negative ion powder is directly doped in a water-based coating or is combined with a film forming material, pigment, an addition agent, a solvent agent and the like to prepare the functional coating. After forming the coating, the tourmaline negative ion powder can release lots of negative ions for long time, adsorbs and degrades indoor harmful gases, settle dust in the air and effectively improves indoor housing environments.

The invention relates to a preparation method of ball clay for high-grade sanitary appliance, which is characterized in that blackmud, plaster and kaolin are used as raw materials for preparing ball clay used by the high-grade sanitary appliance; the size comprises according to the percentage by volume: 10-60% of blackmud, 10-20% of plaster and 20-80% of kaolin; the preparation method overcomes the defect which is brought about by changeable raw material components caused by organic impurity and sand contents of low-grade ball clay; the formed ball clay has stable whiteness, intensity and stickiness and good slip-casting mobility, can be widely applied to high-grade ceramic industries and is the vanguard and demonstration in the process of national ceramic raw material standardizing, and has obvious economic benefic and social benefit.

A disclosed dyeing and finishing method for linen for a child's vest comprises the following steps: preparing original cloth, singeing and rolling with an oxalic acid solution, desizing, scouring, performing chlorine bleaching, mercerizing, performing pad dyeing, softening, tentering, and pre-shrinking. According to the method, the fabric needs scouring for further removing residual impurities after being subjected to desizing, and thus the fabric obtain good water-absorbing property and certain whiteness, and is beneficial for dyeing and other post processing.

The present invention comprises a novel formulation for marking travel lanes, such as roads, which following the application can be reopened for traffic after a waiting period that is shortened as compared to the prior art.

Lignin-containing fibrous materials, in particular paper and card, are treated with whiteness stabilizers for the purpose of reducing light-induced yellowing. The whiteness stabilizer are (i) thiols with at least one additional hydrophilic group from the series consisting of OH, NH2, NHR1m NR1R2, COOH, SO3H and PO3H2 and an amino acid/peptide structure (ii) thiols with a CC double bond (iii) or heteroaromatic thiols and (iv), heteroaromatic disulfides or polysulfides. HALS light stabilizers and/or UV stabilizers are advantageously additionally employed. The stability is increased further by a TiO2-containing coat on the fibrous material. Stabilzer compositions and fibrous material stabilized according to the invention, containing a whiteness stabilizer of group (i) to (iv) are also disclosed.

The invention relates to a series of fluorescent whitening agents containing amino chlorophenyl group quaternary ammonium salt, as well as synthesis and an application of the same. The series of fluorescent whitening agents is mainly applied to papermaking paint printing ink and textile. The synthesis adopts the following steps that: a. cyanuric chloride reacts with amino-chloro-benzene at a temperature between 0 and 5 DEG C for 2.5 h, with pH value controlled to be between 1.8 and 2.1, so as to synthesize one-step condensation product; b. the one-step condensation product reacts with 4, 4'-diaminodiphenylethylene-2, 2'-disulfonic acid at a temperature between 40 and 45 DEG C for 2.5 h, with pH value controlled to be between 3.5 and 4.5, so as to synthesize two-step condensation product; c. the two-step condensation product reacts with a series of tertiary amine compounds at a temperature between 78 and 85 DEG C for 3.0 h, with pH value controlled to be between 7.8 and 8.5, so as to synthesize a series of triazine-DSD acidic fluorescent whitening agents containing amino chlorophenyl group quaternary ammonium salt. Application results show that: the fluorescent whitening agents can be used under neutral/alkaline conditions, and has higher dye uptake rate and better whitening effect under acidic conditions.

The invention relates to a production technology of a white top liner. The technology comprises the following steps that 1, ONP pulp is prepared, water is added to fibers obtained from first flotation of the ONP pulp, bleaching is conducted, first ONP pulp is obtained, water is added to fibers obtained from second flotation of the ONP pulp, bleaching is conducted, second ONP pulp is obtained, concentration is conducted on ONP pulp of two times of flotation, and third ONP pulp is conducted; 2, DMOW pulp is conducted, water is added to fibers obtained from first flotation of the DMOW pulp, bleaching is conducted, first DMOW pulp is obtained, water is added to fibers obtained from second flotation of the DMOW pulp, bleaching is conducted, second DMOW pulp is obtained, concentration is conducted on DMOW pulp of two times of flotation, and third DMOW pulp is conducted; 3, the first DMOW pulp, the first ONP pulp and original wood pulp are mixed, a surface layer is obtained after the mixture flows to paper-making meshes, the second DMOW pulp and the second ONP pulp are mixed, a bottom layer is obtained after the mixture flows to the paper-making meshes, the third DMOW pulp, the third ONP pulp and OCC pulp are mixed, and a core layer is obtained after the mixture flows to the paper-making meshes.

The invention discloses a cotton wood stone ground wood pulping process comprising the following steps of: (1) log sawing and skinning; (2) jordaning with alkali in a wood grinder; (3) screening by a pressure screen; (4) screenings jordaning with alkali in a conical mill; and (5) hydrogen peroxide bleaching. The invention is characterized in that: the wood grinder grindstone of the step (2) adopts bush roll with 4 mesh by primary burring; in the screening process by the pressure slot screen of the step (3), the pulp intake pressure is 0.2-0.4 MPa, the differential pressure is 0.02-0.07 MPa, the pulp intake consistence is 2.5-4.5%, the screenings output volume is 22-35%, the thickness of the screen cut is 0.15-0.35 mm; sodium hydroxide is added in the conical mill of the step (4) to grind screenings, wherein the consumption of the sodium hydroxide is 0.6-0.8% (based on weight percent of oven dry stock), the alkali liquor is added in the pulp intake tank of the conical mill with 40-50 g/l of the alkali liquor concentration, 3.1%-4.54% of jordaning consistency, 0.2-0.3 MPa of jordaning pressure, accordingly, the beating degree of the pulp ground by the conical mill can be increased by 8-12 DEG SR. The pulping process of the invention has advantages of high yield, less pollution, low cost, and the obtained pulp is applicable for paper with various specifications such as pigment offset paper, low weight paper, card paper, color newsprint paper, or the like.

A white, color stable, sunless tanning formulation containing vanillin and dihydroxyacetone for tanning, and octyl salicylate plus octyl methoxycinnamate for color stabilization.

Problem to be solved: To provide a whitened or opacified capsule and film without using a white pigment such as titanium dioxide. Solution: A film, a capsule and a film-forming composition characterized by containing a film-forming polymer component selected from gelatin and pullulan and an opacifying agent consisting of a water-soluble salt except calcium salt carbonate and bicarbonate, wherein the salt is selected from a sodium salt, potassium salt, an ammonium salt and a magnesium salt.