摘要:
Disclosed are epoxy resins exhibiting a highly favorable combination of tensile strength and elongation with respect to prior art epoxy systems. The elastomeric epoxy resin systems of the invention are prepared utilizing a curing agent containing at least one monoprimary amine, and are particularly useful in applications such as, for example, castings, potting, composites, crack sealing, coatings, adhesives, roofing materials, flooring or reinforced membranes.
摘要:
Compositions and methods for forming epoxy resin systems are provided. In one embodiment, a composition is provided for an epoxy resin system including a reaction product of an epoxy resin component and a curing agent component comprising a first amine compound having the formula R1R2R3N, wherein R1 and R2 are independently an aliphatic or alicyclic organic functional group and R3 is an alkyl group, having a backbone of 2-18 carbon atoms, and a second amine compound having one or more primary or secondary amine groups, with the stoichiometic ratio of —NH bonds of the second amine compound to the epoxy groups of the epoxy resin component being from 1:20 to about 21:20. The composition may be used to form composites, such as used in commercial wind turbine blade manufacturing.
摘要翻译:提供了用于形成环氧树脂体系的组合物和方法。 在一个实施方案中,提供了一种环氧树脂体系的组合物,其包括环氧树脂组分和固化剂组分的反应产物,所述固化剂组分包含具有式R 1 R 2 R 3 N的第一胺化合物,其中R 1和R 2独立地为脂族或脂环族有机官能团 并且R3是具有2-18个碳原子的主链的烷基和具有一个或多个伯或仲胺基团的第二胺化合物,其中第二胺化合物的-NH键与环氧基的化学计量比 环氧树脂组分为1:20至约21:20。 组合物可用于形成复合材料,例如用于商用风力涡轮机叶片制造中。
摘要:
A method for recovering cyclic oligomers from a poly(arylene sulfide) polymer or poly(arylene sulfide) polymerization reaction mixture is provided in which the cyclic oligomers are maintained in a solution comprising a suitable solvent and the cyclic oligomers; then the solution is contacted with water to cause the formation of a suspension; then the suspension is acidified to cause the flocculation of cyclic oligomers which can then be more easily recovered.
摘要:
It is herein disclosed a process for stabilizing freshly prepared polyketone polymer comprising contacting the polymer with a sufficient quantity of a stabilizing agent such as an alkali metal iodide salt or an onium iodide salt of nitrogen, phosphorus, or arsenic in which the organic groups comprising the cation coordination sphere is shielded by aromatic substituents. The inventive process results in stabilized polyketone polymers having and exhibiting improved thermal oxidative stability properties. It is also disclosed a stabilized polymer composition comprising a major amount of a polyketone polymer and a minor amount of an onium iodide salt of nitrogen, phosphorus, arsenic or combination thereof in which the cation coordination sphere is shielded by aromatic substituents.
摘要:
It is herein disclosed composite systems of epoxies and polyketone polymers having and exhibiting improved interfacial bonding. The invention also relates to a process for producing the epoxies-polyketone polymer composite systems involving reacting the polyketone polymer with at least one suitable multifunctional amine.
摘要:
A method is provided for selectively extracting the lower molecular weight fraction of a poly(arylene sulfide) polymer by contacting the polymer with a polar organic compound and a promoter compound to form a less dense polymer-lean liquid phase and a more dense polymer-rich liquid phase, separating the polymer-lean liquid phase from the polymer-rich liquid phase, and recovering the polymer from the polymer-rich phase. Alternatively, either of the phases can be isolated and polar organic compound and optionally promoter can be added to form two new phases, followed by isolation of the new polymer-rich phase. This process can be repeated as often as desired or practicable in order to recover polymer having a desired molecular weight and/or molecular weight distribution.
摘要:
Compositions and methods for forming epoxy resin systems are provided. In one embodiment, a composition is provided for an epoxy resin system including a reaction product of an epoxy resin component and a curing agent component comprising a first amine compound having the formula R1R2R3N, wherein R1 and R2 are independently an aliphatic or alicyclic organic functional group and R3 is an alkyl group, having a backbone of 2-18 carbon atoms, and a second amine compound having one or more primary or secondary amine groups, with the stoichiometic ratio of —NH bonds of the second amine compound to the epoxy groups of the epoxy resin component being from 1:20 to about 21:20. The composition may be used to form composites, such as used in commercial wind turbine blade manufacturing.
摘要:
It is herein disclosed a process for stabilizing freshly prepared polyketone polymer comprising contacting the polymer with a sufficient quantity of a stabilizing agent such as a polyaromatic or hydroaromatic compound. The inventive process results in stabilized polyketone polymers having and exhibiting improved thermal oxidative stability properties. It is also disclosed a stabilized polymer composition comprising a major amount of a polyketone polymer and a minor amount of a polyaromatic or hydroaromatic compound.
摘要:
A method is provided for forming poly(arylene sulfide) fibrids by flashing a solution which is comprised of a poly(arylene sulfide) polymer in a polar organic compound and which is essentially free of solids under suitable conditions to form a solidified product comprising poly(arylene sulfide) fibrids.
摘要:
Compositions and methods for forming epoxy resin systems are provided. In one embodiment, a composition is provided for an epoxy resin system including a reaction product of an epoxy resin component and a curing agent component comprising a first amine compound having the formula R1R2R3N, wherein R1 and R2 are independently an aliphatic or alicyclic organic functional group and R3 is an alkyl group, having a backbone of 2-18 carbon atoms, and a second amine compound having one or more primary or secondary amine groups, with the stoichiometic ratio of —NH bonds of the second amine compound to the epoxy groups of the epoxy resin component being from 1:20 to about 21:20. The composition may be used to form composites, such as used in commercial wind turbine blade manufacturing.
摘要翻译:提供了用于形成环氧树脂体系的组合物和方法。 在一个实施方案中,提供了一种环氧树脂体系的组合物,其包括环氧树脂组分和固化剂组分的反应产物,所述固化剂组分包含具有式R 1 R 2 R 3 N的第一胺化合物,其中R 1和R 2独立地为脂族或脂环族有机官能团 并且R3是具有2-18个碳原子的主链的烷基和具有一个或多个伯或仲胺基团的第二胺化合物,其中第二胺化合物的-NH键与环氧基的化学计量比 环氧树脂组分为1:20至约21:20。 组合物可用于形成复合材料,例如用于商用风力涡轮机叶片制造中。