Water-swollen natural rubber

Isobutyl acetate [110-19-0] is a colorless, neutral liquid with a pleasant, fruity odor. It is miscible with organic solvents, but immiscible with water. Isobutyl acetate has a high solvency for cellulose nitrate, colophony, damar resin, ketone and ketone-formaldehyde resins, maleate resins, urea and melamine resins, and phenolic and alkyd resins. Polymers such as polystyrene, poly(vinyl ethers), poly(vinyl acetate), polyacrylates, chlorinated rubber and vinyl chloride copolymers, as well as fats, greases, and oils are readily dissolved. Postchlorinated poly(vinyl chloride) is less soluble. Polyisobutene, cellulose ethers, polymethacrylates, poly(vinyl butyrals), natural rubber, and manila copal are swollen. Shellac, cellulose acetate, cellulose acetobutyrate, poly(vinyl chloride), and poly(vinyl formal) are insoluble. [Pg.363]

Ethyl glycol acetate [111-15-9] (2-ethoxyethyl acetate) is a colorless, neutral liquid that is partially miscible with water and readily miscible with organic solvents. It has a slight odor. Ethyl glycol acetate dissolves many natural and synthetic resins. Cellulose acetate is swollen. Poly(vinyl chloride), rubber, and polyisobutene are insoluble. It is no longer used in paints due to its teratogenic properties. [Pg.364]