公开(公告)号：US09884927B2

公开(公告)日：2018-02-06

申请号：US14655994

申请日：2013-12-13

Applicant: Reliance Industries Limited

Inventor： Krishna Renganath Sarma ,  Yogesh Popatrao Patil ,  Viralkumar Patel ,  Mahuya Bagui ,  Ajit Behari Mathur ,  Raksh Vir Jasra ,  Suketu Vakil ,  Vijay Shivaji Kadam ,  Uma Sankar Satpathy ,  Satya Srinivasa Rao Gandham ,  Jyotindra Bachubhai Patel ,  Mitul Sureshchandra Sheth

IPC: C08F4/654 ,  C08F4/655 ,  C08F4/656 ,  C08F10/02 ,  C08F110/02 ,  C08F4/649 ,  C08F4/642 ,  C08F4/645 ,  C08F10/00

CPC classification number: C08F110/02 ,  C08F4/6425 ,  C08F4/6426 ,  C08F4/6455 ,  C08F4/6457 ,  C08F4/649 ,  C08F10/00 ,  C08F2500/01 ,  C08F2500/17 ,  C08F2500/18 ,  C08F2500/24 ,  C08F4/6465 ,  C08F4/654

Abstract: The present disclosure provides a heterogeneous Ziegler-Natta catalyst system to be used in the preparation of ultra-high molecular weight polymers (UHMWP). The system includes at least one procatalyst, at least one co-catalyst, at least one hydrocarbon medium and at least one external donor, wherein the ratio of elemental magnesium to elemental titanium to halide, in the procatalyst, is 1:1.3:3.7; the ratio of elemental aluminum, present in the co-catalyst to elemental titanium, present in the procatalyst, ranges between 6:1 and 12:1; and the ratio of elemental silicon, present in the external donor to elemental titanium, present in the procatalyst, ranges between 1:10 and 10:1. The present disclosure also provides a process for preparation of UHMWPE using the heterogeneous Ziegler-Natta catalyst system of the present disclosure.

公开(公告)号：US09512307B2

公开(公告)日：2016-12-06

申请号：US14433564

申请日：2013-10-04

Applicant: Reliance Industries Limited

Inventor： Ajit Behari Mathur ,  Satya Srinivasa Rao Gandham ,  Uma Sankar Satpathy ,  Krishna Renganath Sarma ,  Vijay Shivaji Kadam ,  Raksh Vir Jasra

IPC: C08L23/00 ,  C08L23/06 ,  C08L23/08

CPC classification number: C08L23/06 ,  C08L23/0815 ,  C08L2205/025 ,  C08L2207/062 ,  C08L2207/068

Abstract: A polymer composition has homogenous dispersion of a first polymer with a second polymer. The first polymer includes but is not limited to ethylene based homopolymer and ethylene based copolymer. The second polymer has molecular weight higher than the molecular weight of the first polymer and heat of fusion greater than 200 J/g.

Abstract translation: 聚合物组合物具有第一聚合物与第二聚合物的均匀分散。 第一聚合物包括但不限于乙烯基均聚物和基于乙烯的共聚物。 第二聚合物的分子量高于第一聚合物的分子量和熔融热大于200J / g。

公开(公告)号：US09175108B2

公开(公告)日：2015-11-03

申请号：US14250214

申请日：2014-04-10

Applicant: RELIANCE INDUSTRIES LIMITED

Inventor： Krishna Renganath Sarma ,  Ajit Behari Mathur ,  Rakshvir Jasra ,  Sudhakar Padmanabhan ,  Shashikant ,  Viralkumar Patel

IPC: C08F4/76 ,  C08F10/02 ,  C08F4/64

CPC classification number: C08F4/76 ,  C08F4/64048 ,  C08F10/02 ,  C08F110/02 ,  C08F2500/01 ,  C08F2500/17

Abstract: The present invention relates to a non-cryogenic process for the large scale synthesis of disentangled ultra high molecular weight polyethylene (DUHMWPE) polymers. The process comprises of the following steps: a. mixing FI catalyst of formula I with a hydrocarbon solvent containing poly-methyl aluminoxane (P-MAO) co-catalyst in a vessel under stirring before polymerization or directly in the polymerization vessel at a temperature ranging between 25° C. and 29° C. under a dry Nitrogen atmosphere; and lower concentration of co-catalyst resulting in the associated benefits as described earlier in the claims and descriptions. b. pressurizing ethylene in the polymerization vessel and polymerizing ethylene in a solution or a suspension, continuously or batch wise, in one or more stages at a temperature is in the range of 30° C. to 50° C.

Abstract translation: 本发明涉及用于大规模合成解缠结超高分子量聚乙烯（DUHMWPE）聚合物的非低温方法。 该过程包括以下步骤：a。 在聚合之前搅拌下将式I的FI催化剂与含有聚甲基铝氧烷（P-MAO）助催化剂的烃溶剂混合在容器中，或直接在聚合容器中，温度范围为25℃至29℃。 在干燥氮气氛下; 并且较低浓度的助催化剂导致如权利要求和描述中所述的相关益处。 b。 在聚合容器中加压乙烯并在一个或多个阶段中在连续或间歇的溶液或悬浮液中聚合乙烯的温度在30℃至50℃的范围内。

公开(公告)号：US10544243B2

公开(公告)日：2020-01-28

申请号：US15114490

申请日：2015-02-16

Applicant: Reliance Industries Limited

Inventor： Yogesh Popatrao Patil ,  Krishna Renganath Sarma ,  Mahuya Bagui ,  Viralkumar Patel ,  Raksh Vir Jasra ,  Ajit Behari Mathur ,  Suketu Vakil

IPC: C08F110/02 ,  C08F4/648

Abstract: The present disclosure provides a Ziegler-Natta catalyst composition for preparing polymers of ethylene monomers having ultrahigh molecular weight, said composition comprises (i) a pro-catalyst component containing a reaction product of a magnesium containing compound and a titanium containing compound, characterized in that said pro-catalyst component comprises magnesium, titanium and chlorine in an amount ranging between 15 and 18 mole %; 20 and 23 mole %; and 60 and 64 mole %, respectively, all proportions being with respect to the total weight of the Ziegler-Natta catalyst composition; (ii) a co-catalyst component; and (iii) at least one external electron donor compound selected from the group of organosilane compounds having the general formula (I), wherein R1, R2, R3 and R4 are all the same or all are different, or some are the same, and are individually selected from the group consisting of linear or branched alkyl groups, cycloalkyl groups, aryl groups, alkoxy and aryloxy groups.

公开(公告)号：US10370463B2

公开(公告)日：2019-08-06

申请号：US15326796

申请日：2015-07-21

Applicant: RELIANCE INDUSTRIES LIMITED

Inventor： Pradip Munshi ,  Ajit Behari Mathur ,  Ninad Deepak Ingle ,  Pradeep Paresh Kapadia ,  Raksh Vir Jasra

IPC: C08F8/22

Abstract: The present disclosure provides a process for the chlorination of polyvinyl chloride. PVC obtained during the suspension polymerization reaction is directly used for chlorination without filtration, drying and re-slurrying. The present process is carried out in the absence of additional chemicals/reagents; also reheating during the chlorination reaction is not required. CPVC manufactured using the process of the present disclosure has whiteness index greater than 85, yellowness index lower than 4 and thermal stability in the range of 300 to 550 seconds at 210° C.

公开(公告)号：US10105880B2

公开(公告)日：2018-10-23

申请号：US15121552

申请日：2015-02-27

Applicant: Reliance Industries Limited

Inventor： Ajit Behari Mathur ,  Shivaji Vijay Kadam ,  Satya Srinivasa Rao Gandham ,  Uma Sankar Satpathy ,  Krishna Renganath Sarma ,  Nanubhai Fuljibhai Patel ,  Gaurang Manilal Mehta ,  Yogini Maheshbhai Amin ,  Amit Kumar Punamchand Shah ,  Viral Kumar Patel ,  Raksh Vir Jasra ,  Devesh Kumar Shukla ,  Ashishkumar Indravadan Parekh

IPC: B29C55/18 ,  C08F10/02 ,  B29C43/00 ,  B29C43/24 ,  B29C55/00 ,  C08F110/02 ,  B29K105/16 ,  B29K105/00 ,  B29K23/00 ,  B29C43/14 ,  B29L7/00

Abstract: The present disclosure relates to a process for preparing of high thermal conductivity and high heat capacity oriented ultrahigh molecular weight polyethylene (UHMWPE) product. The process includes feeding UHMWPE through rollers to obtain a pre-laminate which is further hot stretched to obtain the oriented UHMWPE product having high thermal conductivity and high heat capacity. The temperature of stretching is maintained below the melt temperature of the UHMWPE throughout the entire process. There is also provided a high thermal conductivity and high heat capacity oriented UHMWPE product prepared by the process of the present disclosure. The oriented UHMWPE product is characterized in the axial thermal conductivity in the range of 70 to 200 W/mK, transverse direction thermal conductivity in the range of 0.022 to 0.045 W/mK and heat capacity in the range of 6 to 25 MJ/m3K.

公开(公告)号：US10047177B2

公开(公告)日：2018-08-14

申请号：US14907108

申请日：2014-07-24

Applicant: RELIANCE INDUSTRIES LIMITED

Inventor： Pradip Munshi ,  Ninad Deepak Ingle ,  Pradeep Paresh Kapadia ,  Vijay Shivaji Kadam ,  Ajit Behari Mathur ,  Raksh Vir Jasra

IPC: C08F114/06 ,  C08F8/22 ,  C08F8/20

Abstract: The present disclosure provides a process for the reduction of residual acidity of halogenated polymer. The process involves treating the halogenated polymer to a physical process such as rotary vacuum drying and then neutralizing the treated halogenated polymer with alkaline metal salt solutions. The process requires less quantity of an economic neutralizing agent/base during chemical treatment, thus improving process economy without prejudicing quality of the final halogenated polymer.

公开(公告)号：US09574040B2

公开(公告)日：2017-02-21

申请号：US14427263

申请日：2013-09-10

Applicant: RELIANCE INDUSTRIES LIMITED

Inventor： Satya Srinivasa Rao Gandham ,  Ajit Behari Mathur ,  Uma Sankar Satpathy ,  Krishna Renganath Sarma ,  Raksh Vir Jasra

IPC: C08F255/02 ,  C08F255/10 ,  C08F255/08

CPC classification number: C08F255/10 ,  C08F255/02 ,  C08F255/08 ,  C08F10/02 ,  C08F2/36

Abstract: In accordance with the present disclosure, there is provided a solid state graft copolymerization process for the preparation of disentangled ultrahigh molecular weight polyethylene graft copolymers in which disentangled ultrahigh molecular weight polyethylene is admixed with at least one functional monomer and a free radical initiator to obtain a mixture; and the mixture thus obtained is subjected to solid state polymerization to obtain a graft copolymer of disentangled ultrahigh molecular weight polyethylene. The graft copolymers of disentangled ultrahigh molecular weight polyethylene shows better crystallization temperature that ranges between 117° C. to 121° C. and improved decomposition temperature (T100) that ranges between 460° C. to 480° C.

Abstract translation: 根据本公开内容，提供了一种用于制备解缠结的超高分子量聚乙烯接枝共聚物的固态接枝共聚方法，其中将解开的超高分子量聚乙烯与至少一种官能单体和自由基引发剂混合以获得 混合物; 将由此获得的混合物进行固态聚合，得到解开的超高分子量聚乙烯的接枝共聚物。 分离的超高分子量聚乙烯的接枝共聚物显示出在117℃至121℃之间更好的结晶温度和在460℃至480℃之间改进的分解温度（T100）。

公开(公告)号：US20160289422A1

公开(公告)日：2016-10-06

申请号：US15088947

申请日：2016-04-01

Applicant: Reliance Industries Limited

Inventor： Mahuya Bagui ,  Yogesh Popatrao Patil ,  ViralKumar Patel ,  Krishna Renganath Sharma ,  Raksh Vir Jasra ,  Ajit Behari Mathur ,  Uma Sankar Satpathy ,  Satya Srinivasa Rao Gandham

IPC: C08K5/3417 ,  C08F110/02

CPC classification number: C08K5/3417 ,  C08F110/02 ,  C08F2410/01 ,  C08K5/0091 ,  C08L23/06 ,  C08F4/6425 ,  C08F2500/18

Abstract: A catalyst composition and a process for obtaining a colored olefin polymer are disclosed. The composition comprises a Ziegler-Natta catalyst and an additive component comprising a colorant. The catalyst composition enables a directly colored polymer to be prepared. The colored polymer has a homogeneous dispersion of the colorant in it and thus has no color defects.

Abstract translation: 公开了一种催化剂组合物和获得着色烯烃聚合物的方法。 组合物包含齐格勒 - 纳塔催化剂和包含着色剂的添加剂组分。 催化剂组合物可以制备直接着色的聚合物。 着色聚合物在其中具有均匀的着色剂分散体，因此没有颜色缺陷。

公开(公告)号：US20160090453A1

公开(公告)日：2016-03-31

申请号：US14892791

申请日：2014-05-26

Applicant: RELIANCE INDUSTRIES LIMITED

Inventor： Ajit Behari Mathur ,  Satya Srinivasa Rao Gandham ,  Uma Sankar Satpathy ,  Krishna Renganath Sarma ,  Yogesh Popatrao Patil ,  Nanubhai Fuljibhai Patel ,  Gaurang Manilal Mehta ,  Raksh Vir Jasra

IPC: C08J5/00 ,  B29C43/24

CPC classification number: C08J5/00 ,  B29C43/006 ,  B29C43/24 ,  B29C43/46 ,  B29K2023/0683 ,  B29K2105/0032 ,  B29K2105/0044 ,  B29K2105/16 ,  B29K2995/0077 ,  B29L2007/007 ,  B32B27/32 ,  C08F110/02 ,  C08J2323/06 ,  C08F2500/01 ,  C08F2500/11

Abstract: The present disclosure relates to a process for the preparation of high strength and high modulus polyethylene products/laminates consisting of steps such as providing a pre-dried, at least 50% disentangled ultra-high molecular weight polyethylene (UHMWPE) powder, feeding the UHMWPE powder having temperature ranging from −15° C. to 50° C., at the nip of at least one pair of heated, polished counter rotating calendaring rollers, rotating at different roller speeds to obtain at least one pre-laminate and hot stretching the pre-laminate(s) at a pre-determined temperature and pre-determined stretching speed to obtain high strength laminates. The laminates provided by the present disclosure have tensile strength ranging between 0.5 GPa and 3.0 GPa and tensile modulus ranging between 40 GPa and 200 GPa.

Abstract translation: 本公开内容涉及一种制备高强度和高模量聚乙烯产品/层压材料的方法，所述高强度和高模量聚乙烯产品/层压材料由诸如提供预干燥的，至少50％的解缠结的超高分子量聚乙烯（UHMWPE）粉末，进料UHMWPE 在至少一对加热抛光的反向旋转压延辊的辊隙处，在-15℃至50℃的温度范围内的粉末，以不同的辊速旋转以获得至少一个预层压板和热拉伸 预层合物在预定温度和预定拉伸速度下获得高强度层压材料。 由本公开提供的层压板具有在0.5GPa和3.0GPa之间的拉伸强度和在40GPa和200GPa之间的拉伸模量。