1) Water solubility: Cold water soluble film requires that water can be dissolved in water above 4 ℃. The faster it dissolves the better. The less residue remaining after dissolution, the better. The clearer the dissolved water, the better. 2)

Acetylene method Using zinc acetate supported on activated carbon as a catalyst, acetylene and acetic acid are reacted under normal pressure and 170-230 ℃. The reaction product is subjected to powder separation, gas separation, aldehyde removal, crude distillation and rectification

With its excellent water-solubility, bonding strength, film forming properties and chemical stabilities, Polyvinyl alcohol(PVOH, PVA) has achieved a great reputation in both global and domestic markets as an industrial material or finishing agent for adhesives, paper, emulsion, suspension, fabric, and

Through a series of chemical modifications to PVA (polyvinyl alcohol) resin, the water resistance of PVA and the compactness of the arrangement of PVA molecules are improved, so that it is difficult for gas molecules to pass through the coating.

Construction adhesives and adhesives Construction adhesives made from polyvinyl alcohol include putty adhesives, paint adhesive base materials, etc., and their scale accounts for more than 40% of the total. At present, the most widely used are PVA 1799, PVA 2099,

Polyvinyl alcohol is an organic compound, white flake, flocculent or powdery solid without taste. Polyvinyl alcohol is an important chemical raw material for the manufacture of gasoline-resistant pipes and vinylon fibers, fabric treatment agents, emulsifiers, adhesives and glues, etc., but

JOYFORCE PVA 1799 has the characteristics of high adhesion, less dosage, high blank rate, low ash content, stable sintering and volatilization, etc., which makes it have great advantages in the use of magnetic products. The quality has been greatly improved.

The dissolution of polyvinyl alcohol is a very delicate operation. If the dissolution is not good, micelles or even hard blocks will appear, which directly affects the subsequent operation and product quality. First, the polyvinyl alcohol is dispersed into cold

One of the important uses of polyvinyl alcohol PVA1799 is to produce vinylon fiber. PVA1799 is also used in textile pulp and textile treatment agent to prevent fabric shrinkage and wrinkling. Polyvinyl alcohol will chemically crosslink with thermosetting resin, which

Biodegradable plastics represented by PLA and PBAT have begun to usher in an outbreak, and PVA has also quietly entered the ranks of alternatives to traditional plastics and developed various applications. If made into PVA film to replace traditional plastic