3results about "Pectin coatings" patented technology

This invention discloses a flame-retardant coating, its preparation method, and its application, belonging to the field of coating material preparation technology. The preparation method of the flame-retardant coating includes: dissolving anionic polysaccharides in water, adding urea and phosphoric acid, reacting at 90-100℃ for 8 h to obtain phosphorylated modified polysaccharides, then adjusting the pH of the modified polysaccharides to 6-8 with an aqueous solution of cationic polypeptides, mixing them in equal volumes, and centrifuging to collect the reaction products, thus obtaining the flame-retardant coating. This invention uses biomass-derived polysaccharides and polypeptides as a basis, introducing flame-retardant groups through phosphorylation modification of the polysaccharides, and then utilizing the strong electrostatic interactions and hydrogen bonding between anions and cations to construct a three-dimensional network aggregate. This method is simple, mild, and low-cost. The prepared coating possesses both excellent flame retardancy and high adhesion, and can be widely used in the field of fireproof materials.

A thixotropic aqueous mixture for preventing superficial scald and / or scuffing damage on produce, such as fruit or pome fruits, and an application method thereof comprising at least one smectite clay and a water-soluble polymer, wherein the thixotropic aqueous mixture is added with high shear mixing to water then applied to produce, such as fruit or pome fruit, via a dip tank, spray bar, or brush bed or combination thereof.

The present invention relates to a process for preparing a coating lacquer comprising the following steps: a) providing a natural hydrocolloid and a solvent, the solvent comprising or consisting of water, b) introducing, under stirring, the natural hydrocolloid into the solvent to obtain a pre-hydrolysis solution, the natural hydrocolloid having a concentration ≥ 13% by weight of the total weight of the pre-hydrolysis solution, c) reaching a temperature comprised between 40°C and 57°C, d) introducing a hydrocolloid-specific hydrolyzing enzyme to obtain a coating lacquer, wherein the coating lacquer has a natural hydrocolloid concentration ≥ 13% by weight of the total weight of the coating lacquer.