摘要:
The present invention relates, in part, to heat transfer compositions and methods that include (a) from about 60% to about 70% by weight of HFC-32; (b) from about 20% to about or less than 40% by weight of a compound selected from unsaturated -CF3 terminated propenes, unsaturated -CF3 terminated butenes, and combinations of these; and (c) from greater than about 0% to about 10% by weight of n-butane, isobutane, and combinations thereof.
摘要:
A fluoroelastomer comprising a copolymer of fluoroolefin monomers selected from one or more of the group consisting of 2,3,3,3-tetrafluoropropene, 1,3,3,3-tetrafluoropropene and 1-chloro-3,3,3-trifluoropropene, and ethylenically unsaturated co-monomers; wherein the fluoroelastomer has a glass transition temperature (Tg) of from about −60° C. to about 53° C. A process of making the fluoroelastomer.
摘要:
A coating composition comprising: (a) at least one coating agent comprising a perfluoropolyether-modified alkyloxysilane polymer; and (b) a carrier composition comprising monochloro, trifluoropropene, wherein the carrier is present in an amount effective to at least partially solvate or at least partially emulsify the coating agent. Such compositions may optionally contain one or more other co-carriers or additives. Also disclosed are methods of coating substrates, in particular substrates having a hard surface such as ceramics or glass, to render them water, oil and/or dirt repellent.
摘要:
The present invention relates, in part, to heat transfer systems, methods and compositions which utilize a heat transfer fluid comprising: (a) HFO-1234ze; (b) HFC-227ea; and (c) optionally HFC- 134a, wherein HFO-1234ze and HFC-227ea are provided in effective amounts to form an azeotrope or azeotrope-like composition.
摘要:
A composition comprising HFC-245fa, cyclopentane, and a third solvent component, wherein the composition is in a homogenous one-phase solution state at temperatures less than the boiling temperature of the composition, and uses thereof, including as blowing agents.