How to choose PU color paste

According to the coloring object and environmental requirements, colorants are mainly divided into two types: light fast and non-light fast. Generally, when the system does not have compatibility for internal use, it is based on the principle of achieving color requirements and low cost, and does not require light fastness. For external use, the following factors must be considered:
a. Light and weather resistance; b. Chemical resistance (mainly acid and alkali resistance); c. Compatibility with the use system; d. Color strength, hiding power and color development; e. Color paste and color paste Matchability between f. The storage stability of the color paste;

Generally, exterior coatings have strict requirements on the color retention of colors. Therefore, when choosing PU color pastes, special attention should be paid to the light and weather resistance and acid and alkali resistance of the color pastes. Under the premise of good compatibility, tinting power, hiding power, color development and storage stability, the mutual matching of color pastes is also very important. We should choose as much as possible the color matching of monochromatic color pastes with excellent light resistance and weather resistance, but in fact they are often composite colors, so follow the performance of inorganic and inorganic, organic and organic or light and weather resistance (1/25ST dilute, light resistance) It should be 7~8 or 8 and weather resistance should be 4~5 or 5) as the principle, so as to ensure outdoor color retention and avoid the obvious difference in weather resistance of colored pastes, which will cause long time to cause fading. Or coating film defects such as uneven color and blooming.

Ningbo Zhongyuan Pigment Co., Ltd. specializes in the production of PU soft toy color pastes, various sponge color pastes, PU hard product color pastes, shoe sole color pastes, etc.