摘要:
A polyoxyalkylene chain-containing lipid derivative, which is represented by the following formula (1): wherein L, Y, W, X1, X2, X3, OA, Z, m1, m2, m3, n1, n2 and n3 are as defined in the specification.
摘要:
A phospholipid derivative, utilizable for modification of liposomes and the like, which is a copolymer containing, as essential component units, a component unit A represented by the formula (1), a component unit B represented by the formula (2A) and/or the formula (2B), and a component unit C represented by the formula (3) [R1 and R2 represent hydrogen atom or methyl group, provided that R1 and R2 do not simultaneously represent methyl group; R3 represents a divalent hydrocarbon group having 1 to 3 carbon atoms; AO represents an oxyalkylene group having 2 to 4 carbon atoms; m represents an average molar number of the added oxyalkylene groups and is a number in the range represented as 4≦m≦100; R4 represents hydrogen atom, a hydrocarbon group or acyl group having 1 to 20 carbon atoms; R5CO and R6CO represent an acyl group having 8 to 24 carbon atoms; R7 represents a divalent hydrocarbon group having 2 to 4 carbon atoms; and X and Y represent hydrogen atom, an alkali metal atom, ammonium or an organic ammonium] wherein a molar ratio of the component unit A relative to a total of the component unit B and the component unit C is from 7/3 to 3/7, and the component unit C is contained at a ratio of from 1 to 4 moles per 1 mole of the copolymer.
摘要:
A phospholipid derivative represented by the following formula (I) wherein R1CO and R2CO independently represent an acyl group; R3 represents hydrogen atom, or a hydrocarbon group; symbol “a” represents an integer of 0 to 4; symbol “b” represents 0 or 1, provided that when a is 0, b is 0; X represents hydrogen atom, an alkali metal atom, an ammonium, or an organic ammonium; A1O and A3O represent an oxyalkylene group containing oxyethylene group, wherein the ratio of the oxyethylene group to the oxyalkylene group in A1O and A3O is 0.5 or larger in terms of a weight ratio; A2O represents an oxyalkylene group; symbols “m” and “q” represent an average molar number of added oxyalkylene groups; and symbol “n” represent an average molar number of added oxyalkylene groups; provided that m, n and q satisfy the following conditions: 5≦m≦600, 1≦n≦45, 0≦q≦200, 10≦m+n+q≦600, 0.04≦n/(m+n+q), and q/(m+n+q)≦0.8, which can thicken the water shell of liposome surface by suppressing the spreading of the polyalkylene oxide structure on the surface and thus increase stability of the liposome.
摘要翻译:由下式(I)表示的磷脂衍生物,其中R 1 CO和R 2 CO独立地表示酰基; R 3表示氢原子或烃基; 符号“a”表示0〜4的整数, 符号“b”表示0或1,条件是当a为0时,b为0; X表示氢原子,碱金属原子,铵或有机铵; A 1 O和A 3 O表示含氧化乙烯基的氧化烯基,其中A 1 O 3中的氧乙烯基与氧化烯基的比例 O和A 3 O以重量比计为0.5以上; O 2表示氧化烯基; 符号“m”和“q”表示加成的氧化烯基团的平均摩尔数; 符号“n”表示加成的氧化烯基的平均摩尔数; 条件是m,n和q满足以下条件:5 <= m <= 600,1 <= n <= 45,0 <= q <= 200,10 <= m + n + q <= 600,0.04 < = n /(m + n + q)和q /(m + n + q)<= 0.8,这可以通过抑制聚环氧烷结构在表面上的扩散而增加脂质体表面的水壳,从而增加稳定性 的脂质体。
摘要:
A phospholipid derivative represented by the formula (1) (Z represents a residue of a compound having 3 to 10 hydroxyl groups; AO represents an oxyalkylene group having 2 to 4 carbon atoms; R1CO and R2CO represent an acyl group having 8 to 22 carbon atoms; X represents hydrogen atom, an alkali metal atom, ammonium or an organic ammonium; “a” represents an integer of 0 to 4; “b” represents 0 or 1; Q represents hydrogen atom or methyl group; m represents an average number of moles of the oxyalkylene group added; and m, k1, k2, and k3 are numbers satisfying the following conditions: 3≦m≦200, 9≦m×(k1+k2+k3)≦1000, 1≦k1≦2, 0≦k2≦9 and 0≦k3≦9, and 3≦k1+k2+k3≦10), which is highly safe for living bodies, and is suitably used for solubilization and dispersion of physiologically active substances and the like, or in the fields of drug delivery systems such as liposomes and cosmetics.
摘要:
A phospholipid derivative represented by the following formula (I) wherein R1CO and R2CO independently represent an acyl group; R3 represents hydrogen atom, or a hydrocarbon group; symbol “a” represents an integer of 0 to 4; symbol “b” represents 0 or 1, provided that when a is 0, b is 0; X represents hydrogen atom, an alkali metal atom, an ammonium, or an organic ammonium; A1O and A3O represent an oxyalkylene group containing oxyethylene group, wherein the ratio of the oxyethylene group to the oxyalkylene group in A1O and A3O is 0.5 or larger in terms of a weight ratio; A2O represents an oxyalkylene group; symbols “m” and “q” represent an average molar number of added oxyalkylene groups; and symbol “n” represent an average molar number of added oxyalkylene groups; provided that m, n and q satisfy the following conditions: 5≦m≦600, 1≦n≦45, 0≦q≦200, 10≦m+n+q≦600, 0.04≦n/(m+n+q), and q/(m+n+q)≦0.8, which can thicken the water shell of liposome surface by suppressing the spreading of the polyalkylene oxide structure on the surface and thus increase stability of the liposome
摘要翻译:由下式(I)表示的磷脂衍生物,其中R 1 CO和R 2 CO独立地表示酰基; R 3表示氢原子或烃基; 符号“a”表示0〜4的整数, 符号“b”表示0或1,条件是当a为0时,b为0; X表示氢原子,碱金属原子,铵或有机铵; A 1 O和A 3 O表示含氧化乙烯基的氧化烯基,其中A 1 O 3中的氧乙烯基与氧化烯基的比例 O和A 3 O以重量比计为0.5以上; O 2表示氧化烯基; 符号“m”和“q”表示加成的氧化烯基团的平均摩尔数; 符号“n”表示加成的氧化烯基的平均摩尔数; 条件是m,n和q满足以下条件:5 <= m <= 600,1 <= n <= 45,0 <= q <= 200,10 <= m + n + q <= 600,0.04 < = n /(m + n + q)和q /(m + n + q)<= 0.8,这可以通过抑制聚环氧烷结构在表面上的扩散而增加脂质体表面的水壳,从而增加稳定性 的脂质体
摘要:
A phospholipid derivative represented by the formula (1) (Z represents a residue of a compound having 3 to 10 hydroxyl groups; AO represents an oxyalkylene group having 2 to 4 carbon atoms; R1CO and R2CO represent an acyl group having 8 to 22 carbon atoms; X represents hydrogen atom, an alkali metal atom, ammonium or an organic ammonium; “a” represents an integer of 0 to 4; “b” represents 0 or 1; Q represents hydrogen atom or methyl group; m represents an average number of moles of the oxyalkylene group added; and m, k1, k2, and k3 are numbers satisfying the following conditions: 3≦m≦200, 9≦m×(k1+k2+k3)≦1000, 1≦k1≦2, 0≦k2≦9 and 0≦k3≦9, and 3≦k1+k2+k3≦10), which is highly safe for living bodies, and is suitably used for solubilization and dispersion of physiologically active substances and the like, or in the fields of drug delivery systems such as liposomes and cosmetics.
摘要:
A phospholipid derivative represented by the following formula (1): wherein [PG]k represents a residue of polyglycerin having a polymerization degree of k, wherein k is 2 to 50, R1CO and R2CO independently represent an acyl group having 8 to 22 carbon atoms, symbol “a” independently represents an integer of 0 to 5, symbol “b” independently represents 0 or 1, M represents hydrogen atom, an alkali metal atom, an ammonium, or an organic ammonium, and k1, k2, and k3 represent numbers satisfying the following conditions: 1≦k1≦(k+2)/2, 0≦k2, and k1+k2+k3=k+2. The phospholipid derivative is highly safe for living bodies and can be suitably utilized in drug delivery systems such as liposome, and the like.
摘要:
A phospholipid derivative represented by the following formula (1): wherein [PG]k represents a residue of polyglycerin having a polymerization degree of k, wherein k is 2 to 50, R1CO and R2CO independently represent an acyl group having 8 to 22 carbon atoms, symbol “a” independently represents an integer of 0 to 5, symbol “b” independently represents 0 or 1, M represents hydrogen atom, an alkali metal atom, an ammonium, or an organic ammonium, and k1, k2, and k3 represent numbers satisfying the following conditions: 1≦k1≦(k+2)/2, 0≦k2, and k1+k2+k3=k+2. The phospholipid derivative is highly safe for living bodies and can be suitably utilized in drug delivery systems such as liposome, and the like.
摘要:
A phospholipid derivative, utilizable for modification of liposomes and the like, which is a copolymer containing, as essential component units, a component unit A represented by the formula (1), a component unit B represented by the formula (2A) and/or the formula (2B), and a component unit C represented by the formula (3) [R1 and R2 represent hydrogen atom or methyl group, provided that R1 and R2 do not simultaneously represent methyl group; R3 represents a divalent hydrocarbon group having 1 to 3 carbon atoms; AO represents an oxyalkylene group having 2 to 4 carbon atoms; m represents an average molar number of the added oxyalkylene groups and is a number in the range represented as 4≦m≦100; R4 represents hydrogen atom, a hydrocarbon group or acyl group having 1 to 20 carbon atoms; R5CO and R6CO represent an acyl group having 8 to 24 carbon atoms; R7 represents a divalent hydrocarbon group having 2 to 4 carbon atoms; and X and Y represent hydrogen atom, an alkali metal atom, ammonium or an organic ammonium] wherein a molar ratio of the component unit A relative to a total of the component unit B and the component unit C is from 7/3 to 3/7, and the component unit C is contained at a ratio of from 1 to 4 moles per 1 mole of the copolymer.
摘要翻译:可用于脂质体改性的磷脂衍生物等,其是以式(1)表示的成分单元A,式(2A)表示的成分单元B和/或式 式(2B)和式(3)表示的成分单元C [R 1和R 2]表示氢原子或甲基,条件是R 0 > 1 SUP>和R 2不同时表示甲基; R 3表示具有1至3个碳原子的二价烃基; AO表示碳原子数2〜4的氧化烯基, m表示加成的氧化烯基的平均摩尔数,是在4≤M≤100的范围内的数字; R 4表示氢原子,碳原子数为1〜20的烃基或酰基, R 5 CO和R 6 CO表示具有8至24个碳原子的酰基; R 7表示具有2至4个碳原子的二价烃基; 并且X和Y表示氢原子,碱金属原子,铵或有机铵],其中组分单元A相对于组分单元B和组分单元C的总量的摩尔比为7/3至3 / 7,组分单元C的含量相对于1摩尔共聚物为1〜4摩尔。
摘要:
A cleaning device includes a brush roller configured to contact an image bearer while rotating to remove toner adhering to an image bearer, a bias applying device configured to apply a bias to the brush roller, and control circuitry configured to causes the bias applying device to apply a first bias in a first period from when the brush roller is new to when a cumulative travel distance or a cumulative rotation time of the brush roller reaches a predetermined value, and to apply a second bias in a second period after the first period. The first bias sends a first current through the brush roller, and the second bias sends a second current through the brush roller. The absolute value of the first current is smaller than the absolute value of the second current.