Abstract: A compound of formula (I): R1O—(CH2CH2O)x—(CH2CH(R2)—O)y—SO3M, wherein R1, R2, x, y and M are defined herein. A composition comprising the compound of formula (I) and the use thereof.

Abstract: 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)mSiR1yX(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.

Abstract: The present application relates to a bypass control structure of a link unit of a chain circuit active power filter and a control method thereof. The bypass control structure includes a main controller, a chain circuit multilevel inverter and a reactor connected to an external electric network. The chain circuit multilevel inverter generally comprises multiple levels of link units. A state of the switch means in each link unit in a chain circuit active power filer is detected in real time, and types of detected faults are classified so as to bypass the fault of the link unit with fault by utilizing the control of the switch means without fault in the link unit with fault. Normal operating, stability, reliability, high efficiency of the active power filter are ensured. Therefore, the problem that the operation must be suspended until the fault is eliminated is solved without any additional bypass means.

Abstract: The present application relates to a bypass control structure of a link unit of a chain circuit active power filter and a control method thereof. The bypass control structure includes a main controller, a chain circuit multilevel inverter and a reactor connected to an external electric network. The chain circuit multilevel inverter generally comprises multiple levels of link units. A state of the switch means in each link unit in a chain circuit active power filer is detected in real time, and types of detected faults are classified so as to bypass the fault of the link unit with fault by utilizing the control of the switch means without fault in the link unit with fault. Normal operating, stability, reliability, high efficiency of the active power filter are ensured. Therefore, the problem that the operation must be suspended until the fault is eliminated is solved without any additional bypass means.

Abstract: The disclosure provides a polyurethane microcapsule consisting of a polymerization product of methylene diphenyl diisocyanate (MDI) prepolymer with a polyol, the polyurethane microcapsule comprising a liquid isocyanate compound 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.

Abstract: 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.