公开(公告)号：US20050203248A1

公开(公告)日：2005-09-15

申请号：US11072986

申请日：2005-03-05

申请人： Lei Zheng ,  Eric Castner ,  Thierry Edme Materne

发明人： Lei Zheng ,  Eric Castner ,  Thierry Edme Materne

IPC分类号： C08L51/00

CPC分类号： C08F257/02 ,  C08C1/15 ,  C08F6/22 ,  C08F236/06 ,  C08L51/00

摘要： This invention discloses a process for synthesizing a hairy polymer particle which comprises the steps of (1) polymerizing a vinyl aromatic monomer by emulsion polymerization in an aqueous medium to produce core particles, (2) recovering the core particles from the aqueous medium, (3) dispersing the core particles in an organic solvent, (4) adding an organo-lithium compound to the dried core particles in the organic solvent to produce the hairless core initiator, and (5) utilizing the hairless core initiator to initiate the anionic polymerization of a conjugated diolefin monomer in an organic solvent to produce a solution of the hairy polymer particles. The hairy polymer nanoparticles can then be recovered from the organic solvent. These hairy polymer particles are comprised of (1) a core which is comprised of a polymer of a vinyl aromatic monomer and (2) hairs which are polymer chains of a conjugated diolefin monomer, wherein the hairs are covalently bonded to the core. The core is typically spherical in shape, has a diameter of less than 1000 nm, and is comprised of a crosslinked polymer of a vinyl aromatic monomer. The hairy polymer particles of this invention are useful as fillers in rubber compositions used in making articles of manufacture, such as tires, hoses, power transmission belts, windshield wiper blades, and the like.

摘要翻译： 本发明公开了一种合成毛状聚合物颗粒的方法，其包括以下步骤：（1）通过乳液聚合在水性介质中聚合乙烯基芳族单体以产生核心颗粒，（2）从水介质中回收芯颗粒，（3 ）将核心颗粒分散在有机溶剂中，（4）将有机锂化合物加入到有机溶剂中的干燥芯颗粒中以制备无毛芯引发剂，和（5）利用无毛芯引发剂引发阴离子聚合 共轭二烯单体在有机溶剂中以产生毛状聚合物颗粒的溶液。 然后可以从有机溶剂中回收毛状聚合物纳米颗粒。 这些毛发聚合物颗粒包括（1）由乙烯基芳族单体的聚合物组成的芯和（2）作为共轭二烯烃单体的聚合物链的毛发，其中毛发共价键合到芯上。 芯通常为球形，直径小于1000nm，并且由乙烯基芳族单体的交联聚合物组成。 本发明的毛发聚合物颗粒可用作用于制造制品的橡胶组合物中的填料，例如轮胎，软管，动力传动带，挡风玻璃刮水器等。

公开(公告)号：US20050260394A1

公开(公告)日：2005-11-24

申请号：US10672675

申请日：2003-09-26

申请人： Manoj Ajbani ,  Christopher Kiehl ,  Thierry Edme Materne

发明人： Manoj Ajbani ,  Christopher Kiehl ,  Thierry Edme Materne

IPC分类号： B32B25/04 ,  C08K5/01 ,  C08L15/00 ,  C08L21/00 ,  C08L51/00 ,  C08L53/02 ,  C08L71/12 ,  C08L101/00 ,  B29C45/14

CPC分类号： C08L51/006 ,  B32B25/04 ,  C08C19/02 ,  C08K5/01 ,  C08L15/00 ,  C08L21/00 ,  C08L53/025 ,  C08L71/12 ,  C08L101/00 ,  Y10T428/24983 ,  Y10T428/31692 ,  Y10T428/31696 ,  Y10T428/31699 ,  Y10T428/31931 ,  Y10T428/31935 ,  C08L2666/02 ,  C08L2666/04

摘要： The present invention discloses an article of manufacture that is comprised of a soft thermoplastic elastomer composition overmolded onto a hard substrate, such as a metal or a thermoplastic resin, wherein the soft thermoplastic composition is comprised of (a) 5 to 60 parts by weight of a thermoplastic resin, such as a polyolefin resin or polystyrene, (b) 5 to 70 parts of a rubbery elastomer that is comprised of repeat units that are derived from a conjugated diene monomer, such as 1,3-butadiene and/or isoprene, wherein the rubbery elastomer is optionally at least partially crosslinked, wherein the repeat units in the rubbery polymer are distributed throughout the rubbery polymer in an essentially random manner, and wherein the rubbery polymer is a solution polymer, (c) 5 to 90 parts of a highly saturated elastomer selected from the group consisting of styrene-ethylene butylene-styrene polymers (SEBS), styrene-ethylene propylene-styrene polymers (SEPS), hydrogenated polybutadiene, hydrogenated polyisoprene, hydrogenated styrene-isoprene random copolymers, hydrogenated styrene-butadiene random copolymers, and (d) 15 to 200 parts by weight of an oil. The present invention further discloses a process for manufacturing an article of manufacture that comprises (1) melt blending (a) 5 to 60 parts by weight of a thermoplastic resin, such as a polyolefin resin and/or polystyrene, (b) 5 to 70 parts of a rubbery elastomer that is comprised of repeat units that are derived from a conjugated diene monomer, wherein the rubbery elastomer is at least partially crosslinked, wherein the repeat units in the rubbery polymer are distributed throughout the rubbery polymer in an essentially random manner, and wherein the rubbery polymer is a solution polymer, (c) 5 to 90 parts of a highly saturated elastomer selected from the group consisting of styrene-ethylene butylene-styrene polymers (SEBS), styrene-ethylene propylene-styrene polymers (SEPS), hydrogenated polybutadiene, hydrogenated polyisoprene, hydrogenated styrene-isoprene random copolymers, hydrogenated styrene-butadiene random copolymers, (d) 15 to 200 parts by weight of an oil, and (e) a crosslinking agent to produce a soft thermoplastic composition, wherein the melt blending is conducted above the melt point of the thermoplastic resin, and wherein the crosslinking of the rubbery elastomer is conducted in a continuous mixer; (2) pelletizing the soft thermoplastic elastomer composition as it is being discharged from the mixer, (3) overmolding the soft thermoplastic elastomer composition onto a hard substrate to produce the article of manufacture.