Abstract:
A composition comprising an MQ resin having a silanol index no greater than 300 and a polysiloxane having a viscosity of at least 600,000 cSt at 25°C or a solid silicone polyamide.
Abstract:
Die Erfindung betrifft ein Verfahren zur Herstellung von siliziumhaltigen Polyamid-Kompositmaterialien, umfassend die Copolymerisation a) wenigstens einer Siliziumverbindung (SV), die wenigstens ein Siliziumatom aufweist, welches wenigstens einen über sein Stickstoffatom gebundenen Lactamylrest der Formel (A) aufweist, b) mit wenigstens einem Comonomer (CM), das ausgewählt ist unter Ammoniumsalzen von Dicarbonsäuren, Aminocarbonsäuren, Aminocarbonsäureamiden und Lactamen. In Formel (A) steht m für eine ganze Zahl im Bereich von 1 bis 11, insbesondere im Bereich von 2 bis 9 und speziell für 3 und # stellt die Anknüpfung an das Siliziumatom der Verbindung (SV) dar.
Abstract:
The present invention provides curable compositions that are substantially free of metal catalysts including both tin and non-tin metal catalysts. The curable compositions employ a catalyst composition comprising the combination of a (i) carbodiimide functional compound, and (ii) an amino-containing compound such as an amino silane functional compound and/or an organic amine compound. The combination of these materials, particularly when aged, accelerates the condensation curing of moisture curable silicones/non-silicones even in the absence of a metal-based catalyst.
Abstract:
Siloxane-based pipe coatings include a hot melt processable siloxane-based elastomeric polymer, and may optionally contain fillers and additives. The siloxane-based elastomeric polymer is a urea-containing segmented copolymer or an oxamide-containing segmented copolymer. The coatings are substantially free of tackifying resins and are non-tacky and non-adhesive until heated to a temperature of at least 50C.
Abstract:
Copolymers, as well as compounds, compositions, articles of manufacture, and methods of making thereof, are disclosed. The copolymers may generally exhibit flexibility properties and may generally have a high refractive index. The copolymers may generally be made by providing a dihydrodisiloxane and an aliphatic vinyl alcohol and combining the dihydrodisiloxane and the aliphatic vinyl alcohol under conditions that allow for hydrogenation of the aliphatic vinyl alcohol and result in coupling of the aliphatic vinyl alcohol to the dihydrodisiloxane to produce a hydroxyl substituted siloxane.
Abstract:
A composition comprising: a first polymer comprising a poly(etherimide-siloxane) copolymer comprising (a) a repeating polyetherimide unit, and (b) a poly(siloxane) block unit, a second polymer different from the first polymer and comprising bromine; and optionally, a third polymer comprising a polycarbonate different from the first polymer and second polymer; wherein polysiloxane block units are present in the composition in an amount of at least 0.3 wt%, and bromine is present in the composition in an amount of at least 7.8 wt%, each based on the sum of the wt% of the first, second, and third polymers; and further wherein an article molded from the composition has an OSU integrated 2 minute heat release test value of less than 65 kW-min/m 2 and a peak heat release rate of less than 65 kW/m 2 , and an E662 smoke test Dmax value of less than 200.
Abstract translation:一种组合物,其包含:包含(a)重复聚醚酰亚胺单元的聚(醚酰亚胺 - 硅氧烷)共聚物的第一聚合物和(b)聚(硅氧烷)嵌段单元,不同于第一聚合物并包含溴的第二聚合物; 和任选地,包含不同于第一聚合物和第二聚合物的聚碳酸酯的第三聚合物; 其中聚硅氧烷嵌段单元以至少0.3重量%的量存在于组合物中,组合物中溴以至少7.8重量%的量存在,每个量基于第一个,第二个 和第三聚合物; 并且其中由所述组合物成型的制品具有小于65kW-min / m 2的OSU集成的2分钟的热释放试验值和小于65kW / m 2的峰值放热率,以及E662烟雾试验Dmax值 小于200。