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Polypropylene (PP)

Additives are used in Polypropylene to prevent polymer degradation,

resulting from exposure to heat, shear and light. They broaden the property and application range by

providing higher functionality and enhanced performance.

As colorants, Organic Pigments provide solutions of high technical standard and are most suitable for

Polyolefins. With Polypropylene applications, the requirements for organic pigments broaden anddemand excellent processing properties like heat resistance or dispersibility and durable end-use

properties like heat and weather fastness.

Thermal and Processing Stability

Synergistic antioxidant blends, comprising phosphites or phosphonites and phenols, are used to ensure

thermal and processing stability during pelletization, processing and end-use. State-of-the-art

antioxidant systems are the well-established Ciba IRGANOX B antioxidant blends. In addition

Ciba IRGASTAB FS blends have been designed to meet the need for improved aesthetic

properties (higher whiteness).

Light Stability

Just as heat and shear can destroy polypropylene, so too can light. Ultraviolet light, the same type that

causes skin to sunburn, can initiate chemical reactions in polypropylene, resulting in polymer chainscission and loss of chemical and physical properties. Ciba TINUVIN and Ciba

CHIMASSORB light stabilizers can improve the light stability of polypropylene. These are

ultraviolet light absorbers (UVAs) or hindered amine/amide light stabilizers (HALS). Often UVAs and

HALS are used together to provide a higher level of polymer light stability.

Additive Blends

Besides additives for thermal, processing and light stability, other additives,

such as nucleating agents, antistats, slip agents and colorants may also have tobe added to achieve the desired property portfolio of a given PP grade. Cibas

Customer-Specific-Blend (CSB) Business focuses on the development,

production and supply of customer-specific additive blend packages.

http://cibasc.com/index/ind-index/ind-pla/ind-pla-polymersandpolymerprocessing/ind-pla-pol-polypropylene.htm#colorantshttp://cibasc.com/index/ind-index/ind-pla/ind-pla-polymersandpolymerprocessing/ind-pla-pol-polypropylene.htm#colorantshttp://cibasc.com/index/ind-index/ind-pla/ind-pla-polymersandpolymerprocessing/ind-pla-pol-polypropylene.htm#colorantshttp://cibasc.com/index/ind-index/ind-pla/ind-pla-polymersandpolymerprocessing/ind-pla-pol-polypropylene.htm#colorants

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Effects Products

Antistatic CHIMASSORB

Coloration IRGANOX B

Processing and Thermal Stability IRGASTAB FS TINUVIN

Coloration

According to its broad use and diverse applications, Ciba offers a versatile product range of OrganicPigments for coloration of PP both for general use and demanding applications. Based on the specificapplication and requirements, Organic Pigments with excellent performace properties like high heat

resistance, good dispersibility or superb weather and light fastness can be provided. Brand names like

Ciba CROMOPHTAL, Ciba IRGAZIN orCiba IRGALITE are well known synonymsfor Cibas high quality Organic Pigments. To find more about Coloration of PP, please seePP Effects.

Products

CROMOPHTAL

IRGALITEIRGAZIN

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