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1. 发明申请

US20150065664A1 GRANULAR POLYARYLENE SULFIDE AND PROCESS FOR MANUFACTURING THE SAME 有权
标题翻译：颗粒状聚氨酯硫化物及其制造方法
公开(公告)号：US20150065664A1
公开(公告)日：2015-03-05
申请号：US14378854
申请日：2013-03-29
申请人： Kureha Corporation
发明人： Akihiro Konno , Ken-Ichi Takaki , Yui Yoshida , Yasuhiro Suzuki
IPC分类号： C08G75/14
CPC分类号： C08G75/14 , C08G75/0209 , C08G75/0231 , C08G75/0268
摘要： A granular polyarylene sulfide; (i) the granular polyarylene sulfide containing an —S— substituent at the terminal, the substituent being formed by cleavage of a disulfide compound; (ii) the granular polyarylene sulfide being an oversize fraction after sifting with a sieve having a mesh size of at least 38 μm; (iii) the granular polyarylene sulfide having a halogen content of at most 1,500 ppm; and (iv) the granular polyarylene sulfide being a granular polyarylene sulfide having a melt viscosity of 3 to 100 Pa·s when measured under conditions at a temperature of 310° C. and a shear rate of 1,200 sec−1. The granular polyarylene sulfide is well balanced in melt viscosity, halogen content, nitrogen content, thermal stability, and yield.
摘要翻译：颗粒状聚芳硫醚; （i）末端含有-S-取代基的粒状聚芳硫醚，该取代基是通过二硫化物化合物的裂解形成的; （ii）颗粒状聚芳硫醚是筛网筛网尺寸至少为38μm的过大部分; （iii）卤素含量为1500ppm以下的粒状聚芳硫醚; 和（iv）在温度310℃，剪切速度1200秒-1的条件下测定时，熔融粘度为3〜100Pa·s的粒状聚芳硫醚的粒状聚芳硫醚。粒状聚芳硫醚在熔体粘度，卤素含量，氮含量，热稳定性和产率方面均衡。

2. 发明授权

US10150849B2 Thermally-expandable microspheres, and composition and molded article containing same 有权
公开(公告)号：US10150849B2
公开(公告)日：2018-12-11
申请号：US15531613
申请日：2015-12-08
申请人： Kureha Corporation
发明人： Yasuhiro Suzuki , Naoko Kuriu , Shintaro Nomura , Tetsuo Ejiri , Shunzo Endo
IPC分类号： C08J9/16 , C08J9/20 , C08F220/48 , C08J9/14 , B01J13/14
摘要： Object:To provide thermally expandable microspheres having little sag.Resolution Means:The thermally expandable microspheres have a structure in which a foaming agent is encapsulated in an outer shell formed from a polymer, wherein, the ratio (%) of (R2/R1)×100 is at least 105%, where R1 is the expansion ratio after the thermally expandable microspheres have been heat-treated for 5 minutes at 150° C. and then foamed by heating for 2 minutes at 200° C., and R2 is the expansion ratio after the thermally expandable microspheres have been heat-treated for 5 minutes at 150° C. and then foamed by heating for 4 minutes at 200° C.

3. 发明授权

US10081710B2 Branched polyarylene sulfide resin, method for manufacturing same and use as polymer modifier 有权
公开(公告)号：US10081710B2
公开(公告)日：2018-09-25
申请号：US15787066
申请日：2017-10-18
申请人： Kureha Corporation
发明人： Akihiro Konno , Yasuhiro Suzuki
IPC分类号： C08G75/00 , C08G75/0231 , C08G75/02 , C08G75/0213 , C08G75/0259
CPC分类号： C08G75/0231 , C08G75/02 , C08G75/0213 , C08G75/0259
摘要： A branched polyarylene sulfide resin includes an —S— substituent group with a cleaved disulfide compound, which has a halogen content of 4,000 ppm or less, a melt viscosity as measured at a temperature of 330° C. and a shear rate of 2 sec−1 of 1.0×104 to 50.0×104 Pa·s, and a melt viscoelasticity tan δ as measured at a temperature of 310° C. and an angular velocity of 1 rad/sec of 0.1 to 0.6.

4. 发明授权

US09422402B2 Method of producing polyarylene sulfide and polyarylene sulfide 有权
标题翻译：生产聚芳硫醚和聚芳硫醚的方法
公开(公告)号：US09422402B2
公开(公告)日：2016-08-23
申请号：US14845420
申请日：2015-09-04
申请人： Kureha Corporation
发明人： Kenji Suzuki , Yoshikatsu Satake , Yasuhiro Suzuki
IPC分类号： C08G75/16
CPC分类号： C08G75/16 , C08G75/00 , C08G75/02
摘要： PROBLEM: To provide a method of producing a polyarylene sulfide (PAS) such as polyphenylene sulfide (PPS) in which a dihalo aromatic compound and a sulfur source containing an alkali metal are polymerized in an organic amide solvent, whereby a PAS is produced at higher yield and the amount of NaCl produced as a by-product is reduced to not greater than half that of conventional methods, and, due to a dehydration step being omissible, PAS with excellent practical utility is produced with high productivity in a short time.SOLUTION: A method of producing a PAS in which a dihalo aromatic sulfide compound represented by the formula: X—(—Ar—S—)n—Ar—X (in the formula, Ar represents an optionally substituted aromatic group, X represents a halogen atom, and n is from 1 to 10)and a sulfur source containing an alkali metal are polymerized in an organic amide solvent; and a PAS of which an average particle size is from 10 to 5000 μm, a melt viscosity measured at a temperature of 310° C. and a shear rate of 1216 sec−1 is from 0.1 to 3000 Pa·s, and a nitrogen content is not greater than 500 ppm.
摘要翻译：问题提供一种生产聚芳硫醚（PAS）的方法，如聚苯硫醚（PPS），其中二卤代芳族化合物和含有碱金属的硫源在有机酰胺溶剂中聚合，从而产生较高的PAS 产率和作为副产物产生的NaCl的量减少到不超过常规方法的一半，并且由于脱水步骤是可允许的，具有优异实用性的PAS在短时间内以高生产率生产。解决方案：一种生产PAS的方法，其中由式X - （ - Ar-S-）n -Ar-X表示的二卤代芳族硫化物化合物（式中，Ar表示任意取代的芳基，X表示卤原子，n为1〜10），含有碱金属的硫源在有机酰胺溶剂中聚合; 平均粒径为10〜5000μm的PAS，在310℃，剪切速度1216sec -1下测定的熔融粘度为0.1〜3000Pa·s，氮含量不大于500ppm。

5. 发明授权

US09896548B2 Method of producing polyarylene sulfide 有权
公开(公告)号：US09896548B2
公开(公告)日：2018-02-20
申请号：US15300404
申请日：2015-03-27
申请人： Kureha Corporation
发明人： Kenji Suzuki , Ken-Ichi Takaki , Yasuhiro Suzuki
IPC分类号： C08G75/14 , C08G75/0259 , C08G75/0254 , C08G75/0213
CPC分类号： C08G75/0259 , C08G75/02 , C08G75/0213 , C08G75/0254
摘要： Provided is a method of producing polyarylene sulfide (PAS) that suppresses side reactions and produces PAS with a high purity and a high molecular weight at a high yield. A method of producing PAS in which a sulfur source and a dihalo aromatic compound are polymerized in an organic amide solvent, the method of producing PAS comprising the following steps 1 to 3: step 1: a preparation step of preparing a mixture containing an organic amide solvent, a sulfur source, water, a dihalo aromatic compound, and an alkali metal hydroxide in an amount that is less than an equimolar amount relative to the sulfur source; step 2: a first-stage polymerization step of initiating a polymerization reaction by heating the mixture, and producing a prepolymer having a dihalo aromatic compound conversion rate of 50% or greater; and step 3: a second-stage polymerization step of adding from 0.11 to 0.3 mol of an alkali metal hydroxide per 1 mol of the sulfur source, and continuing the polymerization reaction. A PAS polymerization reaction solution having a low content of byproduct. PAS having an average particle diameter of 10 to 5,000 μm, a melt viscosity (temperature 310° C., shear rate 1,216 sec−1) of 0.1 to 3,000 Pa·s, and a nitrogen content of 750 ppm or less.

6. 发明授权

US09422400B2 Granular polyarylene sulfide and process for manufacturing the same 有权
标题翻译：颗粒状聚芳硫醚及其制造方法
公开(公告)号：US09422400B2
公开(公告)日：2016-08-23
申请号：US14378854
申请日：2013-03-29
申请人： Kureha Corporation
发明人： Akihiro Konno , Ken-Ichi Takaki , Yui Yoshida , Yasuhiro Suzuki
IPC分类号： C08G75/14 , C08G75/02
CPC分类号： C08G75/14 , C08G75/0209 , C08G75/0231 , C08G75/0268
摘要： A granular polyarylene sulfide; (i) the granular polyarylene sulfide containing an —S— substituent at the terminal, the substituent being formed by cleavage of a disulfide compound; (ii) the granular polyarylene sulfide being an oversize fraction after sifting with a sieve having a mesh size of at least 38 μm; (iii) the granular polyarylene sulfide having a halogen content of at most 1,500 ppm; and (iv) the granular polyarylene sulfide being a granular polyarylene sulfide having a melt viscosity of 3 to 100 Pa·s when measured under conditions at a temperature of 310° C. and a shear rate of 1,200 sec−1. The granular polyarylene sulfide is well balanced in melt viscosity, halogen content, nitrogen content, thermal stability, and yield.
摘要翻译：颗粒状聚芳硫醚; （i）末端含有-S-取代基的粒状聚芳硫醚，该取代基是通过二硫化物化合物的裂解形成的; （ii）颗粒状聚芳硫醚是筛网筛网尺寸至少为38μm的过大部分; （iii）卤素含量为1500ppm以下的粒状聚芳硫醚; 和（iv）在温度310℃，剪切速度1200秒-1的条件下测定时，熔融粘度为3〜100Pa·s的粒状聚芳硫醚的粒状聚芳硫醚。粒状聚芳硫醚在熔体粘度，卤素含量，氮含量，热稳定性和产率方面均衡。

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