53results about How to "Accelerate the ripening speed" patented technology

The present invention discloses one kind of paper surface sizing agent and its preparation process and application. The preparation process includes the free radical emulsion polymerization of dispersant, emulsifier, initiator, cationic monomer, (methyl) acrylate monomer and (methyl) styrene monomer at 30-95 deg.c for 2-6 hr. The dispersant is gelatin, and the initiator is persulfate. The paper surface sizing agent has high performance and environment friendship, and when it is used together with starch in sizing paper surface, it can raise the ring pressure strength greatly, improve Cobb value obviously and speed the curing obviously.

The invention discloses a preparation method of a surface sizing agent. The preparation method comprises the following steps that firstly, methyl styrene, acrylic monomers, cationic monomers and an initiating agent are mixed to be uniform to form a mixed monomer; secondly, 10% of the mixed monomer obtained in the first step is added into a four-opening flask, the temperature is raised to 80-140 DEG C, residual mixed monomer is added dropwise after a reaction is carried out for 5-20 minutes, and then the temperature of 80-140 DEG C is kept for 0.5-1.5 hours; thirdly, acetic acid is added, and at the temperature of 80-140 DEG C, a reaction is carried out for 20-60 minutes; fourthly, preheated deionized water with the temperature being 80-100 DEG C is added, a reaction continues to be carried out for 0.5-2 hours, and the mixture is cooled to 25-35 DEG C, zircon salt is added, the mixture is stirred to be uniform, filtering is carried out, and the surface sizing agent is obtained. According to the surface sizing agent, the Cobb value can be greatly reduced, the surface sizing agent can be quickly cured and is basically cured as soon as the surface sizing agent is loaded to a machine, and the surface strength of body paper can be greatly improved under the situation that the dosage of the sizing agent is not changed.

The invention provides coix seed instant slices and a processing method thereof. Coix seeds are used as raw materials, and the coix seed instant slices which are convenient to eat are prepared through the following steps of performing soaking in alkali liquor, performing extrusion and crushing, performing steam cooking, performing cooling and airing, performing pressing so as to obtain slices, and performing vacuum microwave drying. The coix seed instant slices disclosed by the invention are short in drying time, high in production efficiency, good in rehydration, high in sensory evaluation value and nourishing in mouth feel. According to the coix seed instant slices and the processing method thereof disclosed by the invention, the step of soaking in the alkali liquor and the step of performing treatment with a composite emulsifying agent are adopted, so that the ageing speed of products is increased, and the ageing of the products in the drying process is reduced. The vacuum microwave drying is adopted, so that the drying speed of the coix seed slices is increased, the ageing and film formation phenomena of the surfaces of the coix seed slices are weakened, the products prepared through drying present a loose porous structure, the rehydration speed and the rehydration uniformity of the products are obviously improved, and the brewing convenience of the coix seed instant slices is improved.

The present invention relates to paper surface treating agent, and is especially one kind of paper surface sizing agent and its preparation process. The paper surface sizing agent is prepared with cationic monomer, cross-linking monomer, (methyl) acrylate monomer and (methyl) styrene, and through free radical emulsion polymerization in mixture emulsion comprising dispersant, emulsifier and initiator. It has high performance and environment friendship. It is applied in sizing paper surface together with starch to raise the compression strength of paper, raise Cobb value and improve other performance of paper.

The invention provides a preparing method of a surface sizing agent for a corrugated paper, a product and an application of the surface sizing agent. The surface sizing agent for the corrugated paper is prepared by uniformly mixing a base stock of the surface sizing agent for the corrugated paper with a cationic additive. The preparing method for the base stock of the surface sizing agent for the corrugated paper comprises the steps of adding cationic monomer, siloxane, (metyl)acrylic monomer, (metyl)styrene, an initiator, acetic acid, and water into a reaction vessel, carrying out free radical polymerization reaction to obtain the base stock of the surface sizing agent for the corrugated paper. The preparing method for the cationic additive comprises the steps of adding alkylketene dimmer into an aqueous solution of cationic emulsifier, fully stirring the solution and carrying out emulsification and dispersion to obtain the cationic additive. The surface sizing agent for the corrugated paper obtained through the method can not only cure quickly, sharply improve ring crush compression resistance of the corrugated paper and sharply reduce a COBB value, but also has a very strong anti-dampness performance.