摘要:
Compounds of formula I, process for making same, and cosmetic compositions and methods of skin lightening using compounds of formula I as skin lightening agents: Where each A1 and/or A2 independently is ═H or COR, CO2R, CONHR, the latter three having the following formula A: where R═C1-C18 saturated or unsaturated, linear or branched, hydrocarbon; and each Y1 and/or Y2 independently is H; C1-C18 saturated or unsaturated hydrocarbon; or OZ, where Z=H or COR1, CO2R1, CONHR1 of formula B: and where R1═C1-C18 saturated or unsaturated, linear or branched, hydrocarbon; X is Carbon, Nitrogen, Sulfur, or Oxygen; and N is in integer between 0 and 2.
摘要:
Compounds of formula I, process for making same, and cosmetic compositions and methods of skin lightening using compounds of formula I as skin lightening agents: Where each A1 and/or A2 independently is =H or COR, CO2R, CONHR, the latter three having the following formula A: where R=C1-C18 saturated or unsaturated, linear or branched, hydrocarbon; and each Y1 and/or Y2 independently is H; C1-C18 saturated or unsaturated hydrocarbon; or OZ, where Z=H or COR1, CO2R1, CONHR1 of formula B: and where R1=C1-C18 saturated or unsaturated, linear or branched, hydrocarbon; X is Carbon, Nitrogen, Sulfur, or Oxygen; and N is in integer between 0 and 2.
摘要:
Cosmetic compositions and methods of skin lightening using compounds of formula I as skin lightening agents: Wherein X represents Carbon, Nitrogen, Sulfur or Oxygen; each A1 and/or A2 independently is =H or COR, CO2R, CONHR having the following formula A: where R=C1-C18 saturated or unsaturated, linear or branched, hydrocarbon; and each Y1 and/or Y2 independently is C1-C18 saturated or unsaturated hydrocarbon or OZ, where Z=H or COR1, CO2R1, CONHR1 of formula B: and where R1=C1-C18 saturated or unsaturated, linear or branched, hydrocarbon.
摘要:
An advanced regulatory controller for a converter of a catalytic olefins unit is disclosed. A Fluid Catalytic Cracking (FCC) type converter (i.e., reactor-regenerator) is combined with an ethylene style cold-end for product recovery. The regulatory controller operates using an Advanced Regulatory Control (ARC) application using variables, such as a controlled variable, four disturbance variables, associated variable, and a manipulated variable. The ARC application manipulates fuel oil or tail gas flow to a regenerator in response to an expected future steady state value of a regenerator bed temperature resulting from changes in the values of a selected set of the variables.
摘要:
An advanced regulatory controller for a converter of a catalytic olefins unit is disclosed. A Fluid Catalytic Cracking (FCC) type converter (i.e., reactor-regenerator) is combined with an ethylene style cold-end for product recovery. The regulatory controller operates using an Advanced Regulatory Control (ARC) application using variables, such as a controlled variable, four disturbance variables, associated variable, and a manipulated variable. The ARC application manipulates fuel oil or tail gas flow to a regenerator in response to an expected future steady state value of a regenerator bed temperature resulting from changes in the values of a selected set of the variables.
摘要:
An advanced regulatory controller for a converter of a catalytic olefins unit is disclosed. A Fluid Catalytic Cracking (FCC) type converter (i.e., reactor-regenerator) is combined with an ethylene style cold-end for product recovery. The regulatory controller operates using an Advanced Regulatory Control (ARC) application using variables, such as a controlled variable, four disturbance variables, associated variable, and a manipulated variable. The ARC application manipulates fuel oil or tail gas flow to a regenerator in response to an expected future steady state value of a regenerator bed temperature resulting from changes in the values of a selected set of the variables.
摘要:
A catalyst regenerator for regenerating spent light FCC catalyst and heating the catalyst to supply heat to an FCC reactor. The regenerator has discharge outlets for catalyst and off gas and a valve for introducing spent catalyst through a central stand pipe portion. The regenerator houses a dense phase catalyst bed. A centerwell receives a lower end of the standpipe portion and defines an annulus therebetween. The spent catalyst is introduced through the standpipe portion into the annulus. A fuel distributor introduces fuel into the centerwell for mixing with the catalyst in the annulus. A fluidization distributor introduces fluidization gas into the centerwell for fluidizing the catalyst in the annulus. A radial slot in the centerwell introduces the catalyst and fuel mixture from the annulus below the upper surface of the dense phase bed. An air distributor located below the radial slot introduces combustion air into the dense phase bed.
摘要:
A low molecular weight fraction of gugulipid as antisebum and/or antioxidant active in cosmetic skin care compositions and methods. The low molecular weight fraction is capable of delivering dual benefit to the skin: controlling or preventing sebum secretion (oily skin conditions) and protecting the skin from free radical damage.
摘要:
An advanced regulatory controller for a converter of a catalytic olefins unit is disclosed. A Fluid Catalytic Cracking (FCC) type converter (i.e., reactor-regenerator) is combined with an ethylene style cold-end for product recovery. The regulatory controller operates using an Advanced Regulatory Control (ARC) application using variables, such as a controlled variable, four disturbance variables, associated variable, and a manipulated variable. The ARC application manipulates fuel oil or tail gas flow to a regenerator in response to an expected future steady state value of a regenerator bed temperature resulting from changes in the values of a selected set of the variables.
摘要:
A lift jack includes a base assembly, a base support portion extending from the base assembly, air lift cylinder assembly engaging the base support portion, and a jack locking mechanism. The base support portion has at least one mechanical stop. The locking mechanism is securedly connected to the base assembly and has an adjustable extending member for engaging the at least one mechanical stop.