168results about How to "Formaldehyde free" patented technology

The invention provides a composition useful as a joint compound comprising water, a filler comprising one or more of calcium carbonate, calcium sulfate dihydrate or calcium sulfate hemihydrate, a binder and/or a biocide, wherein the composition after curing is formaldehyde-free.

The invention refers to a kind of compound lyosol fixing arrangement agent, a synthesizing method and the usage. The arrangement agent is made up of following products: (1) the silicon sol is made up of gamma-glycidol ether oxygen propyl trimethoxy-silane, water and hydrochloric acid, whose mol proportion is: 1:5-100:1í‡10 -5-1í‡10 -1; (2) the titanium sol is made up of titanic acid butyl ester, water and hydrochloric acid whose proportion is 1:0.1-10:10-200: 1í‡10 -4-1í‡10 -1; (3) the product is produced by mixing above mentioned silicon sol and titanium sol, the mol proportion of silicon and titanium is 1:0.05-1.0. The arrangement agent may form a mesh particle film on the surface of the fiber, realizes the color fixing aim.

The present invention relates to a thermal deblocking polyurethane crease-resisting finishing agent. Its composition includes (by wt%) 20-60% of hydroxyl terminated polymer whose average mole mass is 400-6000; 0.1-10% of tribasic alcohol compound; 6-20% of dimethylol carboxylic acid compound; 20-50% of polyisocyanate compound; 6-30% of isocyanate blocking agent and 0.6-6% of ammonia water. Said invention also provides its preparation method and concrete steps.

The present invention belongs to the field of chemical technology and is a kind of sol-gel color fixing method. Reagent capable of producing chemical combination with fabric fiber is selected as material for sol finishing liquid to finish fabric at 100-180 deg.C. Thn and transparent complicated network film is formed on the inner and outer surface of fiber to fix the dye on the fabric and to raise the color fastness of fabric.

The invention discloses a flame retardant sound absorbing board based on polyester fiber material and a production process thereof. Waste plastics are used as raw materials; the regenerated polyester staple fiber and regenerated low melting skin core type polyester staple fiber are prepared by melt spinning; the flame retardant is sprayed on the upper surface of the board uniformly, and the partial thickness of the lower surface of the board is dipped into the flame retardant; the flame retardant sound absorbing board is obtained by predrying, cooling down with cold air after calendering and cutting. The production process comprises the following steps: (1), preparing the raw materials; (2), mixing a formation mesh of the regenerated staple fiber; (3), reinforcing the fiber mesh; (4), spraying the flame retardant, and being dipped into the lame retardant; (5), predrying, calendering, and cooling; (6), cutting and arranging. According to the method of spraying and immersion which work at the same time and by spraying the flame retardant on the upper surface and dipping the lower surface into the flame retardant, the good flame retardant effect of the sound absorbing board is effectively guaranteed; a good formability of the sound absorbing board after drying is ensured, and the hardness is up to standard.

The invention belongs to the field of PVC (Polyvinyl Chloride) floors and relates to an elastic sound-absorbing floor. The elastic sound-absorbing PVC floor comprises an elastic PVC transparent layer, a printing fabric layer, a base material layer and an elastic sound-absorbing layer which are arranged in sequence from top to bottom. The elastic sound-absorbing PVC floor has the advantages that due to use of highly-polymerized PVC, the transparent layer has elasticity and is comfortable in foot feel and low in noise; the base material layer has an effect of stabilizing the physical properties of the floor; the elastic sound-absorbing layer has a structure with convex and concave patterns, the part with the convex patterns has high elasticity and can generate elastic deformation when the floor is stepped, and the part with the concave patterns and the ground form a cavity so as to realize the effects of reducing sound generation and absorbing sound; and the elastic sound-absorbing layer and the other layers are laminated together by one time of heat lamination, so that the elastic sound-absorbing floor does not contain glue, VOC (Volatile Organic Compound) and formaldehyde, and is more environment-friendly.

The invention relates to a halogen-free flame-retardant environment-friendly covered polyolefin yarn fabric and a preparation method thereof. The fabric is formed by weaving covered threads and has warp and weft structures; the covered threads comprise polyester fibers and halogen-free flame-retardant environment-friendly polyolefin composite materials covering the surfaces of the polyester fibers; the covered threads are 0.3-0.4 millimeter in diameter, rectangular or square gaps are reserved between the warp structures and the weft structures, and the aperture ratio is 2 to 10 percent; the halogen-free flame-retardant environment-friendly covered polyolefin yarn fabric is 0.55-0.75mm in total thickness and 350-420g/m<2>. The invention also provides a preparation method for the fabric. The fabric has the characteristics of sunshading, ultraviolet resistance, flame retardancy, high color fastness and the like of similar PVC (polyvinyl chloride) substrate fabrics, and also has the advantages of no halogen, environment friendliness, low smoke density during combustion, high self-cleaning property, high chemical stability, light weight, high air permeability and the like.

The invention relates to environment-friendly humidifying wallpaper and a preparation method thereof. The wallpaper comprises a wallpaper base layer, wherein a waterborne printing coating with a humidifying function is printed on the wallpaper base layer; the wallpaper base layer is environment-friendly rich mineral paper or non-woven paper; the waterborne printing coating consists of an adhesive, a porous inorganic mineral material, super absorbent resin, water, a thickening agent, an antifoaming agent and a wetting agent, and the absorbent resin has an effect of increasing the water absorption capacity of the wallpaper. The waterborne printing coating is printed to the wallpaper base layer by adopting a round screen or plain net or gravure process. The thickness of the wallpaper base layer is 100-1,000microns, and the thickness of the waterborne printing coating is 5-50 microns. When the wallpaper achieves a decorative effect, high-efficiency indoor humidity regulation can be performed, and the environment-friendly humidifying wallpaper is pollution-free and formaldehyde-free and has no indoor volatile organic pollutant.

The invention relates to a method for improving the color fastness of a photochromic fabric. The method comprises the following steps: (1), at the room temperature, mixing tetraethoxysilane and glutamic-pyruvic transamine with ethyl alcohol, stirring until uniform mixing, then dripping hydrochloric acid drop by drop under stirring, and stirring unceasingly for 5 hours so as to obtain a finishing liquor; (2), at the room temperature, carrying out two times of soaking and two times of rolling to the photochromic fabric in the finishing liquor, then drying, and finally baking the photochromic fabric. The method provided by the invention has the advantages that the color fixing is convenient, the consumed time is short, the cost is low, pollutions to the environment are small, and the effect in improving the color fastness of the photochromic fabric is obvious; an agent capable of being in reaction with and combined with textile fiber is selected as a raw material to prepare a colloidal sol finishing liquor, when finishing is performed on the photochromic fabric, overhigh temperature is not required, not only can the effect of improving the color fastness of the photochromic fabric be improved, but also damage to fabrics can be prevented.

A composite stone-plastic material used to prepare composite plate with high strength and anticorrosion nature and no pollution of formaldehyde and radioactive material is proportionally prepared from stone powder chosen from light calcium carbonate stone powder and heavy one, PVC resin, and the powder of plant chosen from wheat straw, cotton stalk and wood.

The invention discloses composite modified starch emulsion for a coating and a preparation method of the emulsion. The emulsion adopts modified starch obtained by cross-linking oxidized starch with acidified etherified starch as a framework and adopts hard monomer, soft monomer and functional monomer as mixed monomer. The preparation method comprises the following steps: mixing the oxidized starch with the acidified etherified starch to prepare starch milk, performing alkalization and cross-linking reaction, heating for pasting, and adding an emulsifier, an initiator solution and the mixed monomer for grafting reaction; adjusting the pH value by NaOH to obtain the emulsion for the coating. The emulsion has the advantages of acrylate and starch emulsion, and is excellent in film-forming performance, good in washability and breathability, formaldehyde-free and high in solid content. Compared with the existing common pure acrylic emulsion for the coating, the emulsion disclosed by the invention has the characteristics that the problems of poor film-forming performance, small adhesive force and high hardness of the emulsion are improved and the cost is effectively reduced.

The invention provides a preparation method for a one-step molding mattress. The preparation method is characterized by comprising the following steps of: separately and respectively mixing different fiber materials with ES (Ethylene-Propylene Side By Side) fiber to form different mixtures, respectively carding and lapping the different mixtures obtained by the previous step by the corresponding carding machine to form different fiber layers, putting the different fiber layers into the same drying oven and stacking together for heat treatment, wherein the temperature of the heat treatment is between 200 DEG C and 220 DEG C, and the processing time is 5-6 minutes; in the process of heat treatment, the ES fiber is melted by heating, the molten ES fiber can form heat bonding points among different fiber layers, the heat bonding points can be firmly bound with each other, finally pressed and shaped by air cooling treatment and cropped to obtain the finished product. The preparation method provided by the invention is simple and practical; by utilizing the one-step molding treatment, the labor force is saved, glue bonding is also saved, and the bonding treatment can be realized by the heat bonding points formed among different fiber layers by heating to melt the ES fiber, thus avoiding methanal and harmful substances.

The invention relates to the field of recycling of polystyrene waste, in particular to a method for preparing white latex by utilizing the polystyrene waste. In order to overcome the defects in the prior art for preparing polystyrene/polyvinyl acetate core-shell emulsion, the invention provides the method for preparing the white latex from the polystyrene waste, which can overcome the defects of rigidity and easy oxidability of polystyrene chains and ensure that the polyvinyl acetate emulsion prepared after the polystyrene waste is added has stability. The compositions for preparing the white latex by utilizing the polystyrene waste comprise deionized water, the polystyrene waste, polyvinyl alcohol, vinylacetate, acrylic ester, an initiator, an emulsifier, a plasticizer and an antioxygen. The method for preparing the white latex by utilizing the polystyrene waste comprises the following steps: (1) preparing solution of vinylacetate; (2) preparing solution of polyvinyl alcohol; (3) preparing solution of initiator; and (4) performing emulsion polymerization.