KR102208726B1 - 고용융 강도 및 중간-고밀도 조절을 갖는 저밀도 에틸렌-기반 폴리머 조성물 - Google Patents

고용융 강도 및 중간-고밀도 조절을 갖는 저밀도 에틸렌-기반 폴리머 조성물 Download PDF

Info

Publication number
KR102208726B1
KR102208726B1 KR1020157035185A KR20157035185A KR102208726B1 KR 102208726 B1 KR102208726 B1 KR 102208726B1 KR 1020157035185 A KR1020157035185 A KR 1020157035185A KR 20157035185 A KR20157035185 A KR 20157035185A KR 102208726 B1 KR102208726 B1 KR 102208726B1
Authority
KR
South Korea
Prior art keywords
ethylene
based polymer
composition
polymer
density
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
KR1020157035185A
Other languages
English (en)
Korean (ko)
Other versions
KR20160030887A (ko
Inventor
콜네리스 에프. 제이. 덴 도에더
카르 주어처
제이. 버비 오토
왕 지안
피. 카리알라 테레사
Original Assignee
다우 글로벌 테크놀로지스 엘엘씨
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 다우 글로벌 테크놀로지스 엘엘씨 filed Critical 다우 글로벌 테크놀로지스 엘엘씨
Publication of KR20160030887A publication Critical patent/KR20160030887A/ko
Application granted granted Critical
Publication of KR102208726B1 publication Critical patent/KR102208726B1/ko
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/06—Polyethylene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D123/00—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers
    • C09D123/02—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
    • C09D123/04—Homopolymers or copolymers of ethene
    • C09D123/06—Polyethylene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/04—Homopolymers or copolymers of ethene
    • C08J2323/06—Polyethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2423/04—Homopolymers or copolymers of ethene
    • C08J2423/06—Polyethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00—Applications
    • C08L2203/16—Applications used for films
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2207/00—Properties characterising the ingredient of the composition
    • C08L2207/06—Properties of polyethylene
    • C08L2207/066—LDPE (radical process)

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Manufacturing & Machinery (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
KR1020157035185A 2013-05-22 2014-05-21 고용융 강도 및 중간-고밀도 조절을 갖는 저밀도 에틸렌-기반 폴리머 조성물 Active KR102208726B1 (ko)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US201361826286P 2013-05-22 2013-05-22
US61/826,286 2013-05-22
PCT/US2014/038946 WO2014190041A1 (en) 2013-05-22 2014-05-21 Low density ethylene-based polymer compositions with high melt strength and mid-high density control

Publications (2)

Publication Number Publication Date
KR20160030887A KR20160030887A (ko) 2016-03-21
KR102208726B1 true KR102208726B1 (ko) 2021-01-29

Family

ID=50983173

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020157035185A Active KR102208726B1 (ko) 2013-05-22 2014-05-21 고용융 강도 및 중간-고밀도 조절을 갖는 저밀도 에틸렌-기반 폴리머 조성물

Country Status (8)

Country Link
US (2) US9828496B2 (https=)
EP (2) EP3214123B1 (https=)
JP (1) JP6688217B2 (https=)
KR (1) KR102208726B1 (https=)
CN (1) CN105189638B (https=)
BR (1) BR112015027947B1 (https=)
ES (2) ES2637970T3 (https=)
WO (1) WO2014190041A1 (https=)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9394389B2 (en) 2012-11-20 2016-07-19 Dow Global Technologies Llc Low density ethylene-based polymers with high melt strength
JP6374956B2 (ja) 2013-05-22 2018-08-15 ダウ グローバル テクノロジーズ エルエルシー 高溶融強度を有する低密度エチレン系ポリマーを含有する組成物及びそれから形成されるフィルム
EP3214123B1 (en) 2013-05-22 2021-03-31 Dow Global Technologies LLC Low density ethylene-based polymer compositions with high melt strength and mid-high density control
SG11201705241QA (en) 2014-12-30 2017-07-28 Dow Global Technologies Llc Process to control output and quality of ethylene-based polymer formed by high pressure free radical polymerization
US10400046B2 (en) 2015-06-25 2019-09-03 Joseph J. Matsko Portable powered paint system
KR102577959B1 (ko) 2015-06-25 2023-09-14 다우 글로벌 테크놀로지스 엘엘씨 낮은 헥산 추출물을 갖는 에틸렌계 폴리머
ES2959186T3 (es) 2015-06-30 2024-02-21 Dow Global Technologies Llc Composiciones poliméricas basadas en etileno para recubrimientos por extrusión mejorados
EP3168238A1 (en) 2015-11-10 2017-05-17 Dow Global Technologies LLC Ethylene-based polymers formed by high pressure free radical polymerizations
EP3168237A1 (en) * 2015-11-10 2017-05-17 Dow Global Technologies LLC High pressure, free radical polymerizations to produce ethylene-based polymers
CN108602997B (zh) 2016-02-23 2021-10-15 陶氏环球技术有限责任公司 基于乙烯的聚合物和其制备方法
WO2017172273A1 (en) * 2016-03-31 2017-10-05 Dow Global Technologies Llc Modified polyethylene resins and method for making the same
JP6946331B2 (ja) 2016-04-22 2021-10-06 ダウ グローバル テクノロジーズ エルエルシー 清浄な押出コーティング処理のための低揮発性管状低密度エチレン系ポリマーを製造する方法
CN109153827B (zh) 2016-05-18 2021-10-15 陶氏环球技术有限责任公司 基于乙烯的聚合物及其制备方法
EP3260472A1 (en) 2016-06-24 2017-12-27 Dow Global Technologies LLC Ethylene-based polymers formed by high pressure free radical polymerizations
BR112018074634B1 (pt) 2016-06-24 2022-12-27 Dow Global Technologies Llc Processo de polimerização de alta pressão para formar um polímero à base de etileno, polímero à base de etileno, composição e configuração de cabo ou de fio
BR112019010616B1 (pt) 2016-12-22 2022-11-29 Dow Global Technologies Llc Processo para produzir uma composição, configuração de polimerização, composição e artigo
CN110300661B (zh) 2017-02-28 2022-04-05 陶氏环球技术有限责任公司 用于多层膜中的具有良好可加工性的基于乙烯的聚合物
WO2018200319A1 (en) * 2017-04-27 2018-11-01 Dow Global Technologies Llc Polyethylene blend composition
WO2018218470A1 (en) 2017-05-29 2018-12-06 Dow Global Technologies Llc Thermoplastic polyolefin compositions useful for aldehyde abatement
CN110770259B (zh) 2017-06-28 2022-05-27 陶氏环球技术有限责任公司 用于生产基于乙烯的聚合物的高压自由基聚合
US11111322B2 (en) 2017-07-28 2021-09-07 Dow Global Technologies Llc Low density ethylene-based polymers for low speed extrusion coating operations
AR119443A1 (es) * 2019-07-31 2021-12-15 Dow Global Technologies Llc Polietileno de baja densidad con papel adhesivo de aluminio mejorado mediante la mezcla de resinas de copolímero ácido

Family Cites Families (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3125548A (en) 1961-05-19 1964-03-17 Polyethylene blend
US4339507A (en) * 1980-11-26 1982-07-13 Union Carbide Corporation Linear low density ethylene hydrocarbon copolymer containing composition for extrusion coating
US4438238A (en) * 1981-01-30 1984-03-20 Sumitomo Chemical Company, Limited Low density copolymer composition of two ethylene-α-olefin copolymers
US4550143A (en) * 1983-06-10 1985-10-29 Idemitsu Petrochemical Co., Ltd. Composition comprising ethylene-based polymers
NZ233008A (en) * 1989-03-30 1991-04-26 Buckman Labor Inc Compositions containing 2-thiocyanomethylthiobenzothiazole for use as industrial microbicides
US5102955A (en) 1989-12-29 1992-04-07 Mobil Oil Corporation Broad distribution, high molecular weight low density polyethylene and method of making thereof
EP0575123B2 (en) * 1992-06-17 2008-02-13 Mitsui Chemicals, Inc. Ethylene copolymer composition
US6774190B1 (en) 1992-06-17 2004-08-10 Mitsui Chemicals, Inc. Ethylene copolymer composition
CA2103401C (en) 1992-11-19 2002-12-17 Mamoru Takahashi Ethylene copolymer composition
TW460485B (en) * 1998-06-19 2001-10-21 Japan Polyolefins Co Ltd Ethylene.Α-olefin copolymer, and combinations, films and use thereof
US6844408B2 (en) 2000-03-16 2005-01-18 Basell Polyolefine Gmbh Preparation of polyethylene
EP1311556B1 (en) 2000-08-15 2004-10-27 Akzo Nobel N.V. Use of trioxepans in the production of high-solid acrylic, styrenic and low-density polyethylene type resins
ATE452936T1 (de) 2001-03-09 2010-01-15 Dow Global Technologies Inc Ethenpolymermischungen mit verbessertem modulus und schmelzfestigkeit und aus siesen mischungen hergestellte gegenstände
BRPI0413766B1 (pt) 2003-09-05 2014-01-28 Composição para extrusão de polietileno,uso de uma composição, processo para extrudar um material polimérico sobre um substrato e camada de película polimérica
EP1555292B1 (en) * 2004-01-13 2015-12-23 Borealis Technology Oy Extrusion coating polyethylene
SG160354A1 (en) * 2005-03-04 2010-04-29 Dow Global Technologies Inc An improved low density ethylenic polymer composition and method of making the same
CA2541180A1 (en) 2006-03-23 2007-09-23 Nova Chemicals Corporation Extrusion coating composition
ATE483753T1 (de) 2008-05-19 2010-10-15 Borealis Tech Oy Extrusionsbeschichtung einer polyethylenzusammensetzung
CA2784272A1 (en) * 2009-12-18 2011-06-23 Dow Global Technologies Llc Polymerization process to make low density polyethylene
US8729186B2 (en) 2009-12-18 2014-05-20 Dow Global Technologies Llc Polymerization process to make low density polyethylene
US8637607B2 (en) * 2010-07-28 2014-01-28 Equistar Chemicals, Lp Polyethylene blends and films
BR112013007510B1 (pt) 2010-09-30 2020-10-20 Dow Global Technologies Llc processo de polimerização em alta pressão para formar um polímero a base de etileno, polímero a base de etileno, composição e artigo
JP2012082356A (ja) * 2010-10-14 2012-04-26 Japan Polypropylene Corp 加熱殺菌処理食品の包装フィルム用ポリプロピレン系樹脂組成物及び包装用フィルム
WO2012057975A1 (en) 2010-10-29 2012-05-03 Dow Global Technologies Llc Ethylene-based polymers and processes for the same
US9493641B2 (en) * 2011-06-10 2016-11-15 Dow Global Technologies Llc Resin compositions for extrusion coating
JP6141837B2 (ja) * 2011-07-08 2017-06-07 ダウ グローバル テクノロジーズ エルエルシー インフレーションフィルムに適したポリエチレンブレンド組成物、その製造方法、およびそれから作製されるフィルム
BR112014009303B1 (pt) 2011-10-19 2021-02-02 Dow Global Technologies Llc processo de polimerização de alta pressão
US9334348B2 (en) 2011-11-23 2016-05-10 Dow Global Technologies Llc Low density ethylene-based polymers with extracts at lower molecular weights
US9228036B2 (en) 2011-11-23 2016-01-05 Dow Global Technologies Llc Low density ethylene-based polymers with broad molecular weight distributions and low extractables
IN2014CN04648A (https=) 2011-12-22 2015-09-18 Dow Global Technologies Llc
US8889794B2 (en) * 2011-12-27 2014-11-18 Dow Global Technologies Llc Resin compositions for extrusion coating
BR112014031191B1 (pt) * 2012-06-26 2021-08-24 Dow Global Technologies Llc Composição-mistura de polietileno apropriada para película soprada e película soprada
BR112014032419B1 (pt) 2012-06-27 2021-06-22 Dow Global Technologies Llc Polímero a base de etileno, composição, artigo e processo para formar o polímero a base de etileno
US9394389B2 (en) 2012-11-20 2016-07-19 Dow Global Technologies Llc Low density ethylene-based polymers with high melt strength
BR112015026892A2 (pt) * 2013-05-01 2017-07-25 Dow Global Technologies Llc composições de polímero à base de etileno de baixa densidade com boa resistência a fusão e alta densidade
EP3214123B1 (en) 2013-05-22 2021-03-31 Dow Global Technologies LLC Low density ethylene-based polymer compositions with high melt strength and mid-high density control
JP6609254B2 (ja) 2013-12-26 2019-11-20 ダウ グローバル テクノロジーズ エルエルシー 非対称ポリエンを使用して、エチレン系ポリマーの調製のための反応器の安定性を改善する方法
ES2874999T3 (es) 2013-12-26 2021-11-08 Dow Global Technologies Llc Polímeros basados en etileno formados usando polienos asimétricos
WO2015100318A1 (en) 2013-12-26 2015-07-02 Dow Global Technologies Llc Processes to form ethylene-based polymers using asymmetrical polyenes
WO2015200426A1 (en) 2014-06-27 2015-12-30 Dow Global Technologies Llc Ethylene-based polymers comprising units derived from carbon monoxide and a rheology modifying agent

Also Published As

Publication number Publication date
JP6688217B2 (ja) 2020-04-28
US20160090476A1 (en) 2016-03-31
JP2016519204A (ja) 2016-06-30
US10538652B2 (en) 2020-01-21
EP3214123B1 (en) 2021-03-31
EP3214123A1 (en) 2017-09-06
BR112015027947B1 (pt) 2022-01-18
EP2999743A1 (en) 2016-03-30
KR20160030887A (ko) 2016-03-21
WO2014190041A1 (en) 2014-11-27
ES2637970T3 (es) 2017-10-18
EP2999743B1 (en) 2017-06-21
CN105189638A (zh) 2015-12-23
US9828496B2 (en) 2017-11-28
US20180346697A1 (en) 2018-12-06
ES2868951T3 (es) 2021-10-22
CN105189638B (zh) 2018-02-06
BR112015027947A2 (https=) 2017-09-05

Similar Documents

Publication Publication Date Title
KR102208726B1 (ko) 고용융 강도 및 중간-고밀도 조절을 갖는 저밀도 에틸렌-기반 폴리머 조성물
JP6759263B2 (ja) 高い溶融強度を有する低密度エチレン系ポリマー
JP7071323B2 (ja) 抽出分量と溶融弾性との改善された均衡を有する管状低密度エチレン系ポリマー
JP6588959B2 (ja) 広い分子量分布を持ち、抽出可能性の低い低密度のエチレン系ポリマー
KR102166723B1 (ko) 고용융 강도를 갖는 저밀도 에틸렌-기반 폴리머를 함유하는 조성물 및 이로부터 형성된 필름
KR102171521B1 (ko) 개선된 용융 강도, 출력 및 기계적 특성을 갖는 저밀도 에틸렌계 조성물
KR102699315B1 (ko) 감소된 겔 총수 및 적은 반응기 오염을 갖는 에틸렌계 폴리머 생산 방법
KR102458536B1 (ko) 고용융 강도를 갖는 고밀도 에틸렌계 중합체 조성물의 제조 방법

Legal Events

Date Code Title Description
PA0105 International application

St.27 status event code: A-0-1-A10-A15-nap-PA0105

R17-X000 Change to representative recorded

St.27 status event code: A-3-3-R10-R17-oth-X000

P11-X000 Amendment of application requested

St.27 status event code: A-2-2-P10-P11-nap-X000

P13-X000 Application amended

St.27 status event code: A-2-2-P10-P13-nap-X000

PG1501 Laying open of application

St.27 status event code: A-1-1-Q10-Q12-nap-PG1501

P22-X000 Classification modified

St.27 status event code: A-2-2-P10-P22-nap-X000

A201 Request for examination
PA0201 Request for examination

St.27 status event code: A-1-2-D10-D11-exm-PA0201

R18-X000 Changes to party contact information recorded

St.27 status event code: A-3-3-R10-R18-oth-X000

E902 Notification of reason for refusal
PE0902 Notice of grounds for rejection

St.27 status event code: A-1-2-D10-D21-exm-PE0902

P11-X000 Amendment of application requested

St.27 status event code: A-2-2-P10-P11-nap-X000

P13-X000 Application amended

St.27 status event code: A-2-2-P10-P13-nap-X000

E701 Decision to grant or registration of patent right
PE0701 Decision of registration

St.27 status event code: A-1-2-D10-D22-exm-PE0701

GRNT Written decision to grant
PR0701 Registration of establishment

St.27 status event code: A-2-4-F10-F11-exm-PR0701

PR1002 Payment of registration fee

St.27 status event code: A-2-2-U10-U12-oth-PR1002

Fee payment year number: 1

PG1601 Publication of registration

St.27 status event code: A-4-4-Q10-Q13-nap-PG1601

PR1001 Payment of annual fee

St.27 status event code: A-4-4-U10-U11-oth-PR1001

Fee payment year number: 4

PR1001 Payment of annual fee

St.27 status event code: A-4-4-U10-U11-oth-PR1001

Fee payment year number: 5

PR1001 Payment of annual fee

St.27 status event code: A-4-4-U10-U11-oth-PR1001

Fee payment year number: 6

U11 Full renewal or maintenance fee paid

Free format text: ST27 STATUS EVENT CODE: A-4-4-U10-U11-OTH-PR1001 (AS PROVIDED BY THE NATIONAL OFFICE)

Year of fee payment: 6