Antioxidant, UV Absorber, Pigment For Polyurethane

Polyurethane abbreviated to PUR and PU, is a polymer composed of organic units joined by urethane links. Polyurethane products often are simply called “urethanes”. Polyurethane is used in the manufacture of high-resilience foam seating, rigid foam insulation panels, microcellular foam seals, and gaskets, etc.

Polyurethane could be classified into polyurethane form plastic, polyurethane adhesive, polyurethane coating, polyurethane fiber, polyurethane elastomer by applications.

Antioxidant, UV Stabilizer For Polyurethane

Hindered phenolic antioxidant 1076 or 1010 together with 5057 is suggested to use in polyurethane’ processing. UV absorber P and hindered amine light stabilizer 770 is suggested to use together to protect PUR from ultraviolet light. The typical use of antioxidant and UV stabilizer additives for polyolefins as the table below.

Material Application Antioxidants UV Absorber/HALS Remark
PUR Form, RIM, coating,

adhesive, fiber

 

1076 + 5057

Aromatic amines<0.05%

 

leather, elastomer, textile, sole, adhesive, fiber need UV absorber,

Sole:UV P+770 +1010

Film:770 +UV P

Color stain;

mechanical property;

gas yellowing;

 

Optical Brightener For Polyurethane

Application OBAs Adding Form Typical OBAs Issue to mind
PU Film

 

Dry powder mix before process with granules or solution Single component

KCB

 

Immigration resistance;

Solubility

PU Coating Dry powder mix before process with solution /
PU Adhesive Liquid or dispersion /
PU form Liquid Polyhydric alcohol soluble

 

Organic Pigment For Polyurethane (please click on title)

 

Things to know when choosing pigment for polyurethane

For polyurethane coating, it requires the organic pigments used for coloring to be largely insoluble in the solvents concerned. Good solvent fastness, particularly to dimethylformamide, is often not a characteristic of organic pigments.

For polyurethane form usage, high heat resistance and fully dispersed of pigment are required.