Isocyanato-terminated polysulfide polymers and processes for their preparation
申请人:THIOKOL CORPORATION
公开号:EP0025272A1
公开(公告)日:1981-03-18
Fully and partially arylamine-terminated polysulfide polymers and processes for their preparation and use are disclosed. The fully arylamine-terminated products are curable with polyisocyanates to high molecular weight polymers which are useful in molding and casting as well as in sealants. The partially arylamine-terminated polymers may be further reacted with polyisocyanates to form thiol-terminated polysulfide polymers containing urea chain segments. These compounds are curable in the same manner as standard polysulfide polymers to form firmer polymers. The partially arylamine-terminated polymers may also be chain extended using isocyanate-terminated urethane prepolymers. These block copolymers may be cured by standard SH-terminated polysulfide polymer curing methods to prepare sealants of exceptional resiliency and weather resistance.
本发明公开了全芳基胺封端和部分芳基胺封端聚硫聚合物及其制备和使用工艺。全芳基胺封端的产品可与多异氰酸酯固化成高分子聚合物,可用于模塑、铸造和密封剂。部分芳基胺封端的聚合物可进一步与多异氰酸酯反应,形成含有脲链段的硫醇封端的多硫化物聚合物。这些化合物的固化方式与标准聚硫聚合物相同,可形成更坚固的聚合物。部分芳基胺封端的聚合物也可以使用异氰酸酯封端的聚氨酯预聚物进行链延伸。这些嵌段共聚物可采用标准的 SH 端聚硫聚合物固化方法进行固化,以制备具有优异回弹性和耐候性的密封剂。
Thermoplastic elastomer composition
申请人:The Yokohama Rubber Company, Limited
公开号:EP2290003A2
公开(公告)日:2011-03-02
An object of the present invention is, in a thermoplastic elastomer composition in which a modified rubber is filled and dispersed in a polyamide resin matrix in order to improve the low-temperature durability of the polyamide resin, to reduce the extrusion load during extrusion molding thereof into a film without deteriorating the low-temperature durability. The present invention is a thermoplastic elastomer composition (E) comprising a modified polyamide resin (C) and a modified rubber (D) dispersed in the modified polyamide resin (C), the modified polyamide resin (C) being a resin obtained by melt-blending an polyamide resin (A) and a compound (B) capable of reacting with a terminal amino group of a polyamide resin, wherein the modified rubber (D) has an acid anhydride group or epoxy group and is dynamically cross-linked by a compound (F) having at least one disulfide bond and at least two amino groups. This thermoplastic elastomer composition can be suitable used in the production of an inner linear of a pneumatic tire.
Golf ball compositions including novel processing aids, e.g., metal salts of unsaturated fatty acids, high styrene resins, transpolyisoprene, and transpolybutadiene, for inclusion in rubber-based compositions that reduce safety risks, mixer down time, increase dispersion of the ingredients during processing, and increase component COR over that of a component formed with a conventional processing aid.