MICROENCAPSULATION OF ORGANIC SILANES AND THEIR USE AS SELF HEALING MATERIALS

摘要

The disclosure provides a poly(urea-formaldehyde) microcapsule, which comprises encapsulated in the poly(urea-formaldehyde) microcapsule an organofluorine silane of the general formula (I) A3C(CA2)xSiR1yX(3-y) (I), wherein in formula (I) A is either fluorine (F) or hydrogen (H), wherein at least 50% of atoms A are fluorine. X is chloro or a group RO, wherein R is a linear or branched alkyl radical of 1 to 4 carbon atoms, R1 is a linear, branched or cyclic alkyl group of 1 to 8 carbon atoms, n=0 or 2, y=0 or 1 or 2 and m=0 to 20, encapsulated within the microcapsule. The disclosure also provides self-healing coating compositions comprising such polymeric microcapsules and methods of preventing or slowing corrosion using such coating compositions.

主权项

1. A poly(urea-formaldehyde) microcapsule, the poly(urea-formaldehyde) microcapsule comprising encapsulated within the microcapsule an organofluorine silane of the general formula (I) A3C(CA2)mSiR1yX(3-y) (I), wherein in formula (I) A is either fluorine (F) or hydrogen (H), wherein at least about 50% of atoms A are fluorine, X is chloro or a group RO, wherein R is a linear or branched alkyl radical of 1 to 4 carbon atoms, R1 is a linear, branched or cyclic alkyl group of 1 to 8 carbon atoms, y=0 or 1 or 2 and m=0 to 20.