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Cysteamine Hydrochloride is the salt formulation of the decarboxylated form of the amino acid cysteine. Clinically, cysteamine hydrochloride is used in the treatment of radiation sickness and disorders of cysteine excretion.
A modified castor oil polyurethane adhesive containing catalytic groups, its preparation method and application
ActiveCN121495522BSmall side effectsSmall steric hindrancePolyureas/polyurethane adhesivesPolymer sciencePolyurethane adhesive
This invention relates to the field of organic polymer adhesives, specifically disclosing a modified castor oil polyurethane adhesive containing catalytic groups, its preparation method, and its application. The adhesive is a two-component compound. By weight, component A comprises 30.0-50.0 parts modified castor oil and 0.0-30.0 parts refined castor oil; component B comprises 30.0-50.0 parts polyisocyanate or a modified polyisocyanate and 0.00-0.05 parts dehydrating agent. The modified castor oil is prepared by first reacting refined castor oil and cysteine hydrochloride via a mercapto-olefin addition reaction, followed by neutralization with a strong base. The modified castor oil simultaneously contains hydroxyl, amino reactive groups, and quaternary ammonium salt catalytic groups, exhibiting rapid reaction with isocyanate groups. The mixture of the two components exhibits certain thixotropy, and the crosslinked product has high strength.
Owner:YANTAI RUILONG CHEM TECH CO LTD