CRUDE TALL OIL (CTO)
Kraton CTO is a byproduct of pine wood pulping (Kraft process) used by many paper mills. The term “tall” originated from the Swedish term for pine trees. The pulpwood is delivered to pulp mills and is chipped and boiled with an alkali solution to produce black liquor and pulp. The water from the black liquor is then evaporated and the black liquor soap is skimmed off, and acidulated to make CTO.
CTO is then processed through Kraton’s bio-refinery into four different fractions: tall oil fatty acid (TOFA), tall oil rosin (TOR), distilled tall oil (DTO) and pitch. These fractions can be upgraded into biobased chemicals that enable customers to improve product performance, reduce greenhouse gas (GHG) emissions and reuse valuable materials.
Since CTO is derived from pine trees, it is not as sensitive to seasonable changes like other plant-derived alternatives. This, in combination with our world-class bio-refineries, enables excellent composition consistency and constant high quality. CTO is biobased, natural and has an overall lower carbon footprint compared to vegetable alternatives. CTO does not compete with or displace edible crops, such as soybean or palm.
ADVANTAGES FOR CTO-BASED PRODUCTS
- Supply security
- Composition consistency
- Constant high quality
- Renewable source
- Lower carbon footprint
- Traceable Supply Chain