摘要:
Alkyl cyanoacrylate compositions comprising at least one alkyl cyanoacrylate, a biocompatible plasticizer (preferably dioctyl phthalate), and SO2 as an anionic polymerization inhibitor are provided. These compositions are suitable for topical application to human skin.
摘要:
A polycarbonate resin composition according to the present invention is suited to be used for medical supplies or appliances and shows a very low yellow discoloration when exposed to an ionizing radiation for sterilization. The polycarbonate resin composition comprises 100 parts by weight of a polycarbonate resin; 0.01 to 5 parts by weight of an aromatic compound containing oxy group or carbonyl group; and 0.01 to 5 parts by weight of at least one compound selected from the group consisting of: (A) a compound containing cyclic acetal group; (B) a sulfone compound; (C) a sulfoxide compound; (D) polyalkylene glycol, an ether of polyalkylene glycol or an ester of polyalkylene glycol; (E) a compound containing sulfonate group; and (F) an aromatic hydrocarbon-aldehyde resin.
摘要:
A rubber composition which is the vulcanization reaction product of a rubber, sulfur or a sulfur donor and particular anti-reversion coagents, is disclosed. The anti-reversion coagents only partially react under sulfur-vulcanization reaction conditions up to optimum cure, and, after optimum cure, form cross-links bonded to the sulfur cross-linked rubbers by carbon-carbon linkages. Also disclosed are a vulcanization process carried out in the presence of the anti-reversion coagents and the use of these anti-reversion coagents in the sulfur-vulcanization of rubbers. The anti-reversion coagents of the disclosure provide sulfur-vulcanized rubbers having significantly improved physical properties.
摘要:
A sulphone or sulphonate of the general formula: A-SO2-(O)x-Ar, wherein x = 0 (sulphone) or 1 (sulphonate); Ar is an aryl group, e.g. Ph; and A is a C2-20 alkyl group bearing at least one halo-substituent, e.g. chloro-octyl, may be used as a fire-retardant additive for organic polymers and particularly as a fire-retardant primary plasticiser for chlorine-containing polymers, e.g. PVC.
摘要:
Novel (poly)sulfide-containing polycitraconimides and polyitaconimides are disclosed. Further, a process for the sulfur-vulcanization of rubber using these novel polycitraconimides and polyitaconimides is also disclosed. Also, a sulfur-vulcanized rubber product and articles of manufacture embodying this product are disclosed. Finally, the use of the novel (poly)sulfide-containing polycitraconimides and polyitaconimides as anti-reversion coagents in the sulfur-vulcanization of rubber is also disclosed.
摘要:
The invention relates to a novel absorbent composition and manner of using the same. The absorbent has at least the following two components: (a) a swellable hydrophobic polymer being capable of absorbing a quantity of water which is at least about 10 times the dry weight of said polymer; and (b) an amount of an ionizable surfactant sufficient to form at least a monolayer of said surfactant about said polymer. The novel absorbent is substantially tolerant to an aqueous solution having a soluble salt, such as sodium chloride.
摘要:
A thermoplastic resin foam sheet is an extruded foam sheet of a thermoplastic polyester resin and has a crystallinity of not higher than 20% and a molecular orientation ratio of 4.5 or lower looking in a direction from the surface of the foam sheet. A food container containing such a foam sheet is also disclosed.