摘要:
Polytetrafluoroethylene (PTFE) dispersions in an organic solvent, comprising:
(A) from 2 to 40% by weight of PTFE in powder form; (B) from 50 to 95% by weight of an organic solvent; (C) from 0.5 to 10% by weight of a dispersing agent of formula:
(R H -L) y -(R F -L) x R H (I)
wherein :
x is an integer from 1 to 3; y is 0 or 1, with the proviso that x=1 when y=1; R H is a x-functional radical having an alkylic or polyoxyalkylenic structure; R F is (per)fluoropolyoxyalkylenic radical; L is a divalent organic group.
Such dispersions are utilized for the surface treatment of metals, glass fibers, and the like, and in particular as mould release agents.
摘要:
Greases comprising a mineral and/or synthetic lubricating oil having an hydrogenated basis, a fluoropolyethereal oil and an organic or inorganic thickening agent, wherein the weight ratio lubricating oil + fluoropolyethereal oil / thickening agent ranges from 97:3 to 80:20 and the weight ratio lubricating oil / fluoropolyethereal oil ranges from 95:5 to 60:40.
摘要:
Greases comprising a mineral and/or synthetic lubricating oil having an hydrogenated basis, a fluoropolyethereal oil and an organic or inorganic thickening agent, wherein the weight ratio lubricating oil + fluoropolyethereal oil / thickening agent ranges from 97:3 to 80:20 and the weight ratio lubricating oil / fluoropolyethereal oil ranges from 95:5 to 60:40.
摘要:
Greases comprising a mineral and/or synthetic lubricating oil having an hydrogenated basis, a fluoropolyethereal oil and an organic or inorganic thickening agent, wherein the weight ratio lubricating oil + fluoropolyethereal oil / thickening agent ranges from 97:3 to 80:20 and the weight ratio lubricating oil / fluoropolyethereal oil ranges from 95:5 to 60:40.
摘要:
The present invention relates to additives for lubricating oils and greases which endow said lubricating oils and greases extremely good performance characteristics under boundary lubrication conditions. Such additives are derivatives of monofunctional or difunctional perfluoropolyethers constituted by mercaptans, sulfides, disulfides, phosphines, phosphine-oxides and phosphoric acid triesters.
摘要:
The present invention relates to additives for lubricating oils and greases which endow said lubricating oils and greases extremely good performance characteristics under boundary lubrication conditions. Such additives are derivatives of monofunctional or difunctional perfluoropolyethers constituted by mercaptans, sulfides, disulfides, phosphines, phosphine-oxides and phosphoric acid triesters.
摘要:
Described is the use, as lubricants endowed with improved antiwear properties, of compositions comprising: (A) from 100 to 0.1% by weight of a polyether of general formula (I): wherein: T and T', the same of different from each other, are inert end groups of formula -CF2X, -C2F4X, -C3F6X or fluorinated reactive end groups containing carboxy and/or hydroxy and/or ketone and/or amide and/or amine and/or alkoxy groups, at least one of T and T' being a reactive end group; X is F or Cl; m, n, s and p are integers such that the polyether has an average molecular weight of from about 1,000 to about 100,000; (B) from 0 to 99.9% by weight of certain perfluoropolyethers having non-reactive end groups. Said lubricating compositions can also be used, in combination with suitable thickening agents, for the formulation of lubricating greases having improved antiwear properties.
摘要:
Described is the use, as lubricants endowed with improved antiwear properties, of compositions comprising:
(A) from 100 to 0.1% by weight of a polyether of general formula (I): wherein:
T and T', the same of different from each other, are inert end groups of formula -CF₂X, -C₂F₄X, -C₃F₆X or fluorinated reactive end groups containing carboxy and/or hydroxy and/or ketone and/or amide and/or amine and/or alkoxy groups, at least one of T and T' being a reactive end group; X is F or Cl; m, n, s and p are integers such that the polyether has an average molecular weight of from about 1,000 to about 100,000;
(B) from 0 to 99.9% by weight of certain perfluoropolyethers having non-reactive end groups.
Said lubricating compositions can also be used, in combination with suitable thickening agents, for the formulation of lubricating greases having improved antiwear properties.
摘要翻译:描述了作为具有改善的抗磨损性能的润滑剂,其组合物包含:(A)100-0.1重量%的通式(I)的聚醚:其中:T和T'各自不同 其它的是式-CF 2 X,-C 2 F 4 X,-C 3 F 6 X或含羧基和/或羟基和/或酮和/或酰胺和/或胺和/或烷氧基的氟化反应性端基的惰性端基,T 并且T'是反应性端基; X是F或Cl; m,n,s和p是整数,使得聚醚的平均分子量为约1,000至约100,000; (B)0-99.9重量%的具有非反应性端基的某些全氟聚醚。 所述润滑组合物也可以与合适的增稠剂结合使用,用于配制具有改善的抗磨损性能的润滑脂。