Polyols from castor oil.Polycin GR series polyols are solely derived from the components of castor oil castor oil, yellowish oil obtained from the seed of the castor bean. The oil content of the seeds varies from about 20% to 50%. After the hulls are removed the seeds are cold-pressed. , making them the first completely natural, renewable seed-based series of polyols for the urethane urethane (yoor´ithān´), n ethyl carbamate used as an anesthetic agent for laboratory animals, formerly used as a hypnotic in humans. industry, specifically targeted at the coatings, adhesives, sealants and elastomers (CASE) market segment. For the first time, polyols derived only from castor oil can be used to produce tough coatings, and are also formulated to produce flexible adhesives, soft sealants and elastomers. The Polycin GR series of polyols is said to continue the long history of castor oil in the polyurethane polyurethane Any of a class of very versatile polymers that are made into flexible and rigid foams, fibres, elastomers (elastic polymers), surface coatings, and adhesives. industry, and meets the environmental challenge for products from natural, renewable sources. The physical properties of the Polycin GR polyols range in hydroxyl hydroxyl /hy·drox·yl/ (hi-drok´sil) the univalent radical OH. hy·drox·yl n. The univalent radical or group OH, a characteristic component of bases, certain acids, phenols, alcohols, carboxylic number from 340 down to 35, with functionality from 2.9 to 2, resulting in polyurethane hardness ranging from 75 durometer D to 10 durometer A. Tensile strengths tensile strength Ratio of the maximum load a material can support without fracture when being stretched to the original area of a cross section of the material. When stresses less than the tensile strength are removed, a material completely or partially returns to its greater than 6,000 psi and lower than 50 psi can be attained. (Vertellus Performance Materials) www.vertellus.com |
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