Poly Propylene Carbonate Diol-PPCD

【Product Description】

Poly Propylene Carbonate Diol, PPCD is a new type of aliphatic polycarbonate diol, which contains both carbonate and ether bonds in the molecule. It also has high mechanical properties and high hydrolysis resistance, and has the advantages of polyether and polyester. It can be used to replace conventional hexanediol type polycarbonate diol PCDL, polycaprolactone PCL, polytetrahydrofuran ether glycol PTMG, etc. Used for high-performance polyurethane, and can completely or partially replace traditional polyols to improve product performance, especially suitable In the fields of leather resin, waterborne polyurethane, surface treatment, adhesives, hot melt adhesives, elastomers, shoe materials, etc., synthetic polyurethane has the advantages of high strength, strong hydrolysis resistance, high dryness, and good color development.

【Physical and chemical indicators】

【Features and usage suggestions】

PPCD is a non-crystalline polyol, but because it contains a large number of ether bonds and carbonate bonds in the molecule, it has high cohesive energy and high viscosity; PPCD type polyurethane has high strength and excellent mechanical properties, and it is better than polyether and polyether under the same conditions. Polyester polyurethane.

PPCD is a secondary hydroxyl group, and the reaction speed with isocyanate is much lower than that of common polyether and polyester polyols. The amount of catalyst needs to be adjusted during use. It is recommended to adjust to 3-5 times the amount of polyether or polyester type catalyst, or adjust the reaction appropriately Temperature, extend the reaction time. It is recommended to adjust the mixing speed to 500rpm for the small test to ensure uniform mixing.

【Applications】

PPCD is an aliphatic polycarbonate diol with high mechanical properties and high hydrolysis resistance. It can be used to replace PCDL, PCL, PTMG and other places with high performance requirements. It can completely or partially replace traditional polyols to improve Product performance, especially suitable for leather slurry, waterborne polyurethane, surface, adhesive, elastomer, shoe material and other fields.

【Packaging, transportation, storage, shelf life】

The product is packed in a special iron drum, with a net weight of 220kg/drum.

During transportation, collisions should avoid packaging damage, leakage and pollution, and it must comply with the relevant regulations of the transportation department.

Store in a cool and dry place to prevent moisture absorption.

Shelf life: one year