摘要:
A luminescent solar collector is provided comprising a sheet and a light energy converter, such as a photocell. The sheet comprises two polymer layers. One polymer layer comprises a polymer and a fluorescent dye or quantum dot. The other polymer layer comprises a polymer and a non-fluorescent dye, and may further comprise an organic diffuser. The luminescent solar collector can be customized to any desired viewing color and provides a high level of edge emission.
摘要:
A method for preparing a thermoplastic composition containing an antistatic agent is described. The antistatic agent is a phosphonium sulfonate salt that is prepared by a method that includes combining in an aqueous medium sodium hydroxide and/or lithium hydroxide, a sulfonyl fluoride compound, and a phosphonium halide compound; and separating the phosphonium sulfonate from the aqueous medium. The phosphonium sulfonate salt is then combined with a thermoplastic resin.
摘要:
A thermoplastic composition is provided comprising a thermoplastic polymer, a fluorescent dye or quantum dot, and a diffuser. When molded into an article, the composition has a haze level less than 55 at an article thickness, according to ASTM D1003-00. The composition has increased energy efficiency and enhances the emission of light at the edges of the article. The composition is particularly suited for use as a component of a luminescent solar collector.
摘要:
A water resistant permanent antistatic thermoplastic composition contains about 100 parts by weight of a thermoplastic polymer, such as polycarbonate or a blend thereof, about 0.1 to about 10 parts by weight of an antistatic agent, and about 0.1 to about 10 parts by weight of a polysiloxane-polyether copolymer.
摘要:
Compositions exhibiting water resistant anti-static properties prepared from a thermoplastic polymer and a polymeric anti-static salt is disclosed.
摘要:
Methods of forming polycarbonate graft copolymers are provided. In particular, a polycarbonate polymer or copolymer containing allyl groups provides the backbone for the graft copolymer, and pendant chains are attached to the copolymer through the allyl groups. The graft copolymers exhibit a combination of high transparency, good graft levels, good scratch resistance, and/or good anti-fog properties.
摘要:
Disclosed herein is a method of preparing a polycarbonate composition comprising melt blending a first polycarbonate prepared by interfacial polymerization and having hydroxy end groups that are capped with endcapping groups, with a second polycarbonate prepared by melt polymerization and having hydroxy end groups that are capped with endcapping groups, wherein the second polycarbonate has a lower mole percent of endcapping groups than that of the first polycarbonate; wherein an article having a thickness of 3.2 mm and molded from the polycarbonate composition has a haze of less than 3 according to ASTM D1003-00; and wherein a flat article molded from the polycarbonate composition has a surface charge of −2 to +2 kV. A polycarbonate composition and complex article prepared according to the method are also disclosed.
摘要:
A thermoplastic resin composition comprises an aromatic polycarbonate; an impact modifier; a flame retardant; and from 0.9 to 5.38 mol % of an anti-static additive having the formula: wherein X is independently selected from halogen or hydrogen provided that at least one X is halogen; n, m and p are integers from 0 to 12; and Y is zero or a heterocyclic atom, other than carbon, of an atomic ring and is either nitrogen, oxygen, sulfur, selenium, phosphorus, arsenic, and the like; R1, R2, and R3 are the same, each having an aliphatic hydrocarbon radical with 1 to 8 carbon atoms or an aromatic hydrocarbon radical of 6 to 12 carbon atoms and R4 is a hydrocarbon radical with 1 to 18 carbon atoms; wherein the amount of the anti-static additive is based on 100 kg of the composition.
摘要:
An antistatic additive comprises a quaternary onium organosilicon compound having the formula (I) wherein each R1 independently comprises an aliphatic or aromatic functional groups that may be substituted or unsubstituted; X comprises phosphorus or nitrogen; each R2 independently comprises an aliphatic or aromatic functional group that may be substituted or unsubstituted; each R3 independently comprises a hydrogen or an aliphatic or aromatic functional group that may be substituted or unsubstituted; and “n” has a value of about 1 to about 20.
摘要:
A quaternary onium aromatic sulfonate represented by the formula: wherein each R1 independently comprises substituted or unsubstituted, aliphatic or aromatic, hydrocarbyl, carbocyclic or heterocyclic radicals, each X is selected from the group consisting of phosphorus and nitrogen; wherein “a” has a value of 0, 1 or 2, and “b” has a value of 0 or 1 with the proviso that (a+b) is equal to 1 or 2; G1 is an aromatic group; E comprises a bis(carbonyloxyalkyl) polydiorganosiloxane, a bis (carbonyloxyaryl) polydiorganosiloxane, and an ether linkage; each Y independently comprises hydrogen, a monovalent hydrocarbon group, alkenyl, allyl, halogen, bromine, chlorine; nitro; and OR, wherein R is a monovalent hydrocarbon group; “q” represents any integer from and including zero through the number of positions on G1 available for substitution; “t” represents an integer equal to at least one; “s” represents an integer equal to either zero or one; and “u” represents any integer including zero; with the proviso that when E is an ether linkage, then X is phosphorus.