INTERNAL MOLD RELEASE COMPOSITIONS CONTAINING PHOSPHATE ESTERS

摘要

Internal mold release compositions for molding polyurethane and polythiourethane is disclosed herein. The composition includes mixture of: (a) a mono C2-C6 alkyl phosphate; (b) a di C2-C6 alkyl phosphate, wherein the alkyl groups of the di-alkyl phosphate may be the same or different, and wherein the alkyl groups of the mono- and di-alkyl phosphate may be the same or different; and (c) a C7-C18 mono- and/or di-alkyl phosphate. Also disclosed is a polymerizable composition which includes (a) one or more monomers containing two or more isocyanate groups; (b) one ore more monomers containing two or more functional groups selected from a thiol group and a hydroxyl group; (c) a mixture of a mono- C2-C6 alkyl phosphate and a di- C2-C6 alkyl phosphate, wherein the alkyl groups of the di-alkyl phosphate may be the same or different and wherein the alkyl groups of the mono- and di-alkyl phosphate mixture may be the same or different, wherein the mono- C2-C6 alkyl phosphate is present in an amount of >/= 20 wt.%, based on the total weight of the mixture of the mono- C2-C6 alkyl phosphate and the di- C2-C6 alkyl phosphate. The composition can also optionally include the C7-C18 mono- and/or di-alkyl phosphate.