CN108424794A - 一种尾气清洁剂及其制备方法 - Google Patents

一种尾气清洁剂及其制备方法 Download PDF

Info

Publication number
CN108424794A
CN108424794A CN201810248167.8A CN201810248167A CN108424794A CN 108424794 A CN108424794 A CN 108424794A CN 201810248167 A CN201810248167 A CN 201810248167A CN 108424794 A CN108424794 A CN 108424794A
Authority
CN
China
Prior art keywords
content
preparation
tail gas
sapn
isopropanol
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.)
Withdrawn
Application number
CN201810248167.8A
Other languages
English (en)
Inventor
金乐峰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to CN201810248167.8A priority Critical patent/CN108424794A/zh
Publication of CN108424794A publication Critical patent/CN108424794A/zh
Withdrawn legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10LFUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L1/00Liquid carbonaceous fuels
    • C10L1/10Liquid carbonaceous fuels containing additives
    • C10L1/14Organic compounds
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10LFUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L1/00Liquid carbonaceous fuels
    • C10L1/10Liquid carbonaceous fuels containing additives
    • C10L1/14Organic compounds
    • C10L1/16Hydrocarbons
    • C10L1/1608Well defined compounds, e.g. hexane, benzene
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10LFUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L1/00Liquid carbonaceous fuels
    • C10L1/10Liquid carbonaceous fuels containing additives
    • C10L1/14Organic compounds
    • C10L1/18Organic compounds containing oxygen
    • C10L1/182Organic compounds containing oxygen containing hydroxy groups; Salts thereof
    • C10L1/1822Organic compounds containing oxygen containing hydroxy groups; Salts thereof hydroxy group directly attached to (cyclo)aliphatic carbon atoms
    • C10L1/1824Organic compounds containing oxygen containing hydroxy groups; Salts thereof hydroxy group directly attached to (cyclo)aliphatic carbon atoms mono-hydroxy
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10LFUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L1/00Liquid carbonaceous fuels
    • C10L1/10Liquid carbonaceous fuels containing additives
    • C10L1/14Organic compounds
    • C10L1/18Organic compounds containing oxygen
    • C10L1/182Organic compounds containing oxygen containing hydroxy groups; Salts thereof
    • C10L1/1822Organic compounds containing oxygen containing hydroxy groups; Salts thereof hydroxy group directly attached to (cyclo)aliphatic carbon atoms
    • C10L1/1826Organic compounds containing oxygen containing hydroxy groups; Salts thereof hydroxy group directly attached to (cyclo)aliphatic carbon atoms poly-hydroxy
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10LFUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L1/00Liquid carbonaceous fuels
    • C10L1/10Liquid carbonaceous fuels containing additives
    • C10L1/14Organic compounds
    • C10L1/18Organic compounds containing oxygen
    • C10L1/185Ethers; Acetals; Ketals; Aldehydes; Ketones
    • C10L1/1852Ethers; Acetals; Ketals; Orthoesters
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10LFUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L1/00Liquid carbonaceous fuels
    • C10L1/10Liquid carbonaceous fuels containing additives
    • C10L1/14Organic compounds
    • C10L1/18Organic compounds containing oxygen
    • C10L1/19Esters ester radical containing compounds; ester ethers; carbonic acid esters
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10LFUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L1/00Liquid carbonaceous fuels
    • C10L1/10Liquid carbonaceous fuels containing additives
    • C10L1/14Organic compounds
    • C10L1/22Organic compounds containing nitrogen
    • C10L1/222Organic compounds containing nitrogen containing at least one carbon-to-nitrogen single bond
    • C10L1/2222(cyclo)aliphatic amines; polyamines (no macromolecular substituent 30C); quaternair ammonium compounds; carbamates
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10LFUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L1/00Liquid carbonaceous fuels
    • C10L1/10Liquid carbonaceous fuels containing additives
    • C10L1/14Organic compounds
    • C10L1/22Organic compounds containing nitrogen
    • C10L1/222Organic compounds containing nitrogen containing at least one carbon-to-nitrogen single bond
    • C10L1/224Amides; Imides carboxylic acid amides, imides
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10LFUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L2230/00Function and purpose of a components of a fuel or the composition as a whole
    • C10L2230/22Function and purpose of a components of a fuel or the composition as a whole for improving fuel economy or fuel efficiency

Landscapes

  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

本发明创造涉及一种尾气清洁剂及其制备方法,由以下体积百分比的组分组成:甲醇的含量为90%~98%、石油醚的含量为2%~8%、甲苯的含量为0.1%~0.5%、异丙醇的含量为0.1%~0.3%、正丁醇的含量为0.05%~0.15%、甲基叔丁基醚的含量为0.01%~0.05%、二乙烯三胺的含量为0.05%~0.15%、丁二酰亚胺的含量为0.1%~0.8%、异辛烷的含量为0.2%~0.6%、乙酸乙酯的含量为0.3%~0.8%、司盘的含量为0.2%~0.8%;因此,本发明具有无污染、制造方便和无异味的优点。

Description

一种尾气清洁剂及其制备方法
技术领域
本发明属于汽油技术领域,具体涉及一种尾气清洁剂及其制备方法。
背景技术
近年来,汽车的使用越来越普及,随着汽车的普及,造成的问题就是污染空气,由于现有技术中的汽油中含碳量较高,导致汽车尾气中的一氧化碳和二氧化碳的含量也相对偏高,另外汽油为非可再生能源,随着能源的大量消耗,能源供应越来越紧张,为了改善节约能源,现在人们研制和开发了汽油添加剂,汽油添加剂的作用在于提高汽油的燃烧率和清洁度;针对这一问题,有必要开发出一种无污染、制造方便和无异味的汽油添加剂及其制备方法;因此,开发一种无污染、制造方便和无异味的尾气清洁剂及其制备方法具有十分重要的意义。
发明内容
本发明的目的是为了克服现有技术的不足,而提供一种无污染、制造方便和无异味的尾气清洁剂及其制备方法。
本发明的目的是这样实现的:一种尾气清洁剂及其制备方法,由以下体积百分比的组分组成:甲醇的含量为90%~98%、石油醚的含量为2%~8%、甲苯的含量为0.1%~0.5%、异丙醇的含量为0.1%~0.3%、正丁醇的含量为0.05%~0.15%、甲基叔丁基醚的含量为0.01%~0.05%、二乙烯三胺的含量为0.05%~0.15%、丁二酰亚胺的含量为0.1%~0.8%、异辛烷的含量为0.2%~0.6%、乙酸乙酯的含量为0.3%~0.8%、司盘的含量为0.2%~0.8%。
由以下体积百分比的组分组成:甲醇的含量为90%、石油醚的含量为2%、甲苯的含量为0.1%、异丙醇的含量为0.1%、正丁醇的含量为0.05%、甲基叔丁基醚的含量为0.01%、二乙烯三胺的含量为0.05%、丁二酰亚胺的含量为0.1%、异辛烷的含量为0.2%、乙酸乙酯的含量为0.3%、司盘的含量为0.2%。
由以下体积百分比的组分组成:甲醇的含量为98%、石油醚的含量为8%、甲苯的含量为0.5%、异丙醇的含量为0.3%、正丁醇的含量为0.15%、甲基叔丁基醚的含量为0.05%、二乙烯三胺的含量为0.15%、丁二酰亚胺的含量为0.8%、异辛烷的含量为0.6%、乙酸乙酯的含量为0.8%、司盘的含量为0.8%。
由以下体积百分比的组分组成:甲醇的含量为93%、石油醚的含量为5%、甲苯的含量为0.3%、异丙醇的含量为0.2%、正丁醇的含量为0.1%、甲基叔丁基醚的含量为0.03%、二乙烯三胺的含量为0.1%、丁二酰亚胺的含量为0.5%、异辛烷的含量为0.4%、乙酸乙酯的含量为0.6%、司盘的含量为0.5%。
甲醇、石油醚、甲苯、异丙醇(粘度改良剂)、正丁醇、甲基叔丁基醚、二乙烯三胺、丁二酰亚胺、异辛烷、乙酸乙酯、司盘混合到一起乳化搅拌,50min后,静置2h可以灌装。
本发明的有益效果:本发明中的低碳汽油增强动力,减少尾气中的碳含量,燃油充分,减少大气污染,成本低廉,生产制造方便;因此,本发明具有无污染、制造方便和无异味的优点。
具体实施方式
实施例1
一种尾气清洁剂及其制备方法,由以下体积百分比的组分组成:甲醇的含量为90%~98%、石油醚的含量为2%~8%、甲苯的含量为0.1%~0.5%、异丙醇的含量为0.1%~0.3%、正丁醇的含量为0.05%~0.15%、甲基叔丁基醚的含量为0.01%~0.05%、二乙烯三胺的含量为0.05%~0.15%、丁二酰亚胺的含量为0.1%~0.8%、异辛烷的含量为0.2%~0.6%、乙酸乙酯的含量为0.3%~0.8%、司盘的含量为0.2%~0.8%。
在本实施例中,常温常压下,将甲醇、石油醚、甲苯、异丙醇(粘度改良剂)、正丁醇、甲基叔丁基醚、二乙烯三胺、丁二酰亚胺、异辛烷、乙酸乙酯、司盘混合到一起乳化搅拌,50min后,静置2h可以灌装,制造过程方便,节能环保;加入甲苯的作用在于让汽油添加剂更加稳定,异丙醇的作用改良汽油添加剂的粘度,正丁醇具有改进Ph值的作用,司盘具有防腐性能;因此,本发明具有无污染、制造方便和无异味的优点。
实施例2
一种尾气清洁剂及其制备方法,由以下体积百分比的组分组成:甲醇的含量为90%~98%、石油醚的含量为2%~8%、甲苯的含量为0.1%~0.5%、异丙醇的含量为0.1%~0.3%、正丁醇的含量为0.05%~0.15%、甲基叔丁基醚的含量为0.01%~0.05%、二乙烯三胺的含量为0.05%~0.15%、丁二酰亚胺的含量为0.1%~0.8%、异辛烷的含量为0.2%~0.6%、乙酸乙酯的含量为0.3%~0.8%、司盘的含量为0.2%~0.8%,由以下体积百分比的组分组成:甲醇的含量为90%、石油醚的含量为2%、甲苯的含量为0.1%、异丙醇的含量为0.1%、正丁醇的含量为0.05%、甲基叔丁基醚的含量为0.01%、二乙烯三胺的含量为0.05%、丁二酰亚胺的含量为0.1%、异辛烷的含量为0.2%、乙酸乙酯的含量为0.3%、司盘的含量为0.2%,由以下体积百分比的组分组成:甲醇的含量为98%、石油醚的含量为8%、甲苯的含量为0.5%、异丙醇的含量为0.3%、正丁醇的含量为0.15%、甲基叔丁基醚的含量为0.05%、二乙烯三胺的含量为0.15%、丁二酰亚胺的含量为0.8%、异辛烷的含量为0.6%、乙酸乙酯的含量为0.8%、司盘的含量为0.8%,由以下体积百分比的组分组成:甲醇的含量为93%、石油醚的含量为5%、甲苯的含量为0.3%、异丙醇的含量为0.2%、正丁醇的含量为0.1%、甲基叔丁基醚的含量为0.03%、二乙烯三胺的含量为0.1%、丁二酰亚胺的含量为0.5%、异辛烷的含量为0.4%、乙酸乙酯的含量为0.6%、司盘的含量为0.5%。
本实施例中的比例为最佳实施例,并且在河南进行了实验推广,经过百万次车辆的汽车实验应用,检测结果为无污染、制造方便和无异味的优点。
具体实施方式是对本发明的进一步说明而非限制,对本领域普通技术人员来说在不脱离本发明实质内容的情况下对结构做进一步变换,而所有这些变换都应属于本发明所附权利要求的保护范围。

Claims (5)

1.一种尾气清洁剂及其制备方法,其特征在于:由以下体积百分比的组分组成:甲醇的含量为90%~98%、石油醚的含量为2%~8%、甲苯的含量为0.1%~0.5%、异丙醇的含量为0.1%~0.3%、正丁醇的含量为0.05%~0.15%、甲基叔丁基醚的含量为0.01%~0.05%、二乙烯三胺的含量为0.05%~0.15%、丁二酰亚胺的含量为0.1%~0.8%、异辛烷的含量为0.2%~0.6%、乙酸乙酯的含量为0.3%~0.8%、司盘的含量为0.2%~0.8%。
2.根据权利要求1所述的一种尾气清洁剂及其制备方法,其特征在于:由以下体积百分比的组分组成:甲醇的含量为90%、石油醚的含量为2%、甲苯的含量为0.1%、异丙醇的含量为0.1%、正丁醇的含量为0.05%、甲基叔丁基醚的含量为0.01%、二乙烯三胺的含量为0.05%、丁二酰亚胺的含量为0.1%、异辛烷的含量为0.2%、乙酸乙酯的含量为0.3%、司盘的含量为0.2%。
3.根据权利要求1所述的一种尾气清洁剂及其制备方法,其特征在于:由以下体积百分比的组分组成:甲醇的含量为98%、石油醚的含量为8%、甲苯的含量为0.5%、异丙醇的含量为0.3%、正丁醇的含量为0.15%、甲基叔丁基醚的含量为0.05%、二乙烯三胺的含量为0.15%、丁二酰亚胺的含量为0.8%、异辛烷的含量为0.6%、乙酸乙酯的含量为0.8%、司盘的含量为0.8%。
4.根据权利要求1所述的一种尾气清洁剂及其制备方法,其特征在于:由以下体积百分比的组分组成:甲醇的含量为93%、石油醚的含量为5%、甲苯的含量为0.3%、异丙醇的含量为0.2%、正丁醇的含量为0.1%、甲基叔丁基醚的含量为0.03%、二乙烯三胺的含量为0.1%、丁二酰亚胺的含量为0.5%、异辛烷的含量为0.4%、乙酸乙酯的含量为0.6%、司盘的含量为0.5%。
5.根据权利要求1所述的一种尾气清洁剂及其制备方法,其特征在于:甲醇、石油醚、甲苯、异丙醇、正丁醇、甲基叔丁基醚、二乙烯三胺、丁二酰亚胺、异辛烷、乙酸乙酯、司盘混合到一起乳化搅拌,50min后,静置2h可以灌装。
CN201810248167.8A 2018-03-24 2018-03-24 一种尾气清洁剂及其制备方法 Withdrawn CN108424794A (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810248167.8A CN108424794A (zh) 2018-03-24 2018-03-24 一种尾气清洁剂及其制备方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810248167.8A CN108424794A (zh) 2018-03-24 2018-03-24 一种尾气清洁剂及其制备方法

Publications (1)

Publication Number Publication Date
CN108424794A true CN108424794A (zh) 2018-08-21

Family

ID=63159023

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810248167.8A Withdrawn CN108424794A (zh) 2018-03-24 2018-03-24 一种尾气清洁剂及其制备方法

Country Status (1)

Country Link
CN (1) CN108424794A (zh)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102399601A (zh) * 2010-09-17 2012-04-04 东莞市智造生物科技有限公司 一种高清洁甲醇汽油
CN105296021A (zh) * 2015-12-08 2016-02-03 蒋金香 一种环保汽油添加剂及其制备方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102399601A (zh) * 2010-09-17 2012-04-04 东莞市智造生物科技有限公司 一种高清洁甲醇汽油
CN105296021A (zh) * 2015-12-08 2016-02-03 蒋金香 一种环保汽油添加剂及其制备方法

Similar Documents

Publication Publication Date Title
CN102031163A (zh) 一种乙醇汽油复合添加剂及其制备方法
CN102604692A (zh) 一种新型甲醇汽油及其制备方法
CN104004551B (zh) 一种车用甲醇汽油及其制备方法
CN101429461A (zh) 车用复合甲醇汽油
CN108424794A (zh) 一种尾气清洁剂及其制备方法
TWI550080B (zh) Automotive fuel composition
CN101245266A (zh) 一种环保清洁型汽油及其制备方法
CN103060022A (zh) 一种甲醇汽油及其生产方法
CN108384590A (zh) 一种汽油添加剂及其制备方法
CN103923708A (zh) 一种高清洁醚基汽油
CN102703136A (zh) 一种环保节能合成甲醇汽油
CN109233917A (zh) 一种尾气清洁剂
CN108611133A (zh) 一种节能型尾气清洁剂
CN103642536A (zh) 一种醇类汽油添加剂及其制备方法
CN108893148A (zh) 一种汽油添加剂
CN110041974A (zh) 一种尾气清洁剂
CN109161415A (zh) 一种汽车尾气清洁剂
CN101250444A (zh) 可再生环保绿色新能源燃油的使用配方
CN104263431A (zh) 一种汽车燃料组合物
CN109294632A (zh) 一种低碳汽油
CN108531230A (zh) 一种汽车尾气清洁剂
CN110066694A (zh) 一种清洁燃料及其制备方法
CN105419884A (zh) 一种低比例甲醇汽油及其制备方法
CN103965976A (zh) 一种高比例甲醇汽油复合添加剂的技术配方
CN103740416A (zh) 一种生物酶改性的环保型燃料

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WW01 Invention patent application withdrawn after publication
WW01 Invention patent application withdrawn after publication

Application publication date: 20180821