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公开(公告)号：KR1020130052215A
公开(公告)日：2013-05-22
申请号：KR1020110117538
申请日：2011-11-11
Applicant: 현대자동차주식회사
CPC classification number: C21D8/0226 , B21B1/26 , C21D7/13 , C21D2211/005
Abstract: PURPOSE: A method for refining the crystal grain of low carbon steel through an asymmetric rolling method is provided to apply a larger effective stress which is such that compressive stress and shear stress are simultaneously applied to the rolled low carbon steel compared with a symmetric rolling method, thereby improving a mechanical property by refining ferrite crystal grain. CONSTITUTION: A method for refining the crystal grain of low carbon steel through an asymmetric rolling method asymmetrically hot-rolls an upper and a lower roll in order to improve a mechanical property by refining the ferrite crystal grain of the low carbon steel which contains 0.12 to 0.2 wt% of carbon, passes between the upper and the lower roll, and is hot-rolled. The asymmetric rolling rate of the upper and the lower roll is 30 to 50 %. In the asymmetric rolling method, the size of the upper roll is larger than the size of the lower roll. [Reference numerals] (AA) Upper roll; (BB) Low carbon steel; (CC) Lower roll
Abstract translation: 目的：提供一种通过不对称轧制法对低碳钢的晶粒进行精炼的方法，以应用较大的有效应力，使压缩应力和剪切应力与对称轧制方法相比同时施加于轧制低碳钢 从而通过精炼铁素体晶粒来提高机械性能。 构成：通过不对称轧制法对低碳钢的晶粒进行精炼，通过不对称地热轧上下辊来提高低碳钢的晶粒的方法，通过精炼含有0.12〜 0.2重量％的碳通过上辊和下辊之间，并被热轧。 上辊和下辊的不对称轧制速率为30〜50％。 在不对称轧制方法中，上辊的尺寸大于下辊的尺寸。 （附图标记）（AA）上辊; （BB）低碳钢; （CC）下卷
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公开(公告)号：KR1020120131851A
公开(公告)日：2012-12-05
申请号：KR1020110050307
申请日：2011-05-26
Applicant: 현대자동차주식회사
IPC: C07D319/12 , C07C59/08
CPC classification number: C07D319/12
Abstract: PURPOSE: A method for preparing type D lactide from type D lactic acid of a liquid phase is provided to lower cost for preparing type D polylactic acid. CONSTITUTION: A method for preparing type D lactide comprises: a step of converting type D lactic acid into type D polylactic acid at 130-150 Deg. C. and a pressure of 10-200 torr; a step of heating the type D polylactic acid under a zinc oxide catalyst at 230-240 Deg. C. to convert the liquid phase into a gas phase stream; a step of cooling the gas phase stream at -78 Deg. C. to 10 Deg. C. and separating the gas phase stream into unreacted lactic acid and a mixture; a step of mixing the mixture and water and isolating type D lactide. [Reference numerals] (a) Reactor; (b) Mixture; (c) Lactic acid recycle; (d) Water; (e) Pure lactide
Abstract translation: 目的：提供一种从液相D型乳酸制备D型丙交酯的方法，以降低制备D型聚乳酸的成本。 构成：制备D型丙交酯的方法包括：将D型乳酸转化为130-150度的D型聚乳酸的步骤。 C.压力为10-200乇; 在氧化锌催化剂下以230-240度加热D型聚乳酸的步骤。 C.将液相转化成气相物流; 在-78度下冷却气相物流的步骤。 C.到10度 并将气相物流分离成未反应的乳酸和混合物; 将混合物和水混合并分离D型丙交酯的步骤。 （附图标记）（a）反应器; （b）混合物; （c）乳酸回收; （d）水; （e）纯丙交酯
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公开(公告)号：KR1020120119106A
公开(公告)日：2012-10-30
申请号：KR1020110036868
申请日：2011-04-20
Applicant: 현대자동차주식회사
Abstract: PURPOSE: A micro alga culture medium including high content of starch and a micro alga culturing method including high content of starch using the same are provided to obtain low cost bio material by enabling the manufacturing of the micro alga including high content of starch. CONSTITUTION: A micro alga culture medium including high content of starch comprises 80-90 wt% of NaNO3, 2-3 wt% of K2HPO4, 4-8 wt% of Mg Cl2·6H2O, 1-2 wt% of Na2CO3, 1-2 wt% of CaCl2, 1-4 wt% of ethylenediaminetetraacetic acid, 0.3-0.5 wt% of citric acid and 0.3-0.6 wt% of Na2SiO3·9H2O or ferric citrate. The micro alga culture medium additionally includes 0.01-0.5 wt% of H3BO3, MnCl2·4H2O, ZnSO4·7H2O, Na2MoO4·2H2O, CuSO4·5H2O or Co(NO3)2·6H2O. A method for cultivating the micro alga uses the micro alga culture medium. The cultivating method irradiates light of 770-790 micro mol/(m2S-1) at 33-37 deg. Celsius under the daytime condition. The cultivating method irradiates light of 13 ~ 17 micro mol/(m2S-1) at 13-17 deg. Celsius under the night time condition.
Abstract translation: 目的：提供包含高含量淀粉的微藻培养基和包含高含量淀粉的微藻培养方法，以通过使包含高含量淀粉的微藻的制造获得低成本的生物材料。 构成：包含高含量淀粉的微藻培养基包含80-90重量％的NaNO 3，2-3重量％的K 2 HPO 4，4-8重量％的Mg Cl 2·6H 2 O，1-2重量％的Na 2 CO 3， 2重量％的CaCl 2，1-4重量％的乙二胺四乙酸，0.3-0.5重量％的柠檬酸和0.3-0.6重量％的Na 2 SiO 3·9H 2 O或柠檬酸铁。 微藻培养基另外含有0.01-0.5重量％的H3BO3，MnCl2·4H2O，ZnSO4·7H2O，Na2MoO4·2H2O，CuSO4·5H2O或Co（NO3）2·6H2O。 用于培养微藻的方法使用微藻培养基。 培养方法在33-37度照射770-790微摩尔/（m2S-1）的光。 白天的摄氏度。 栽培方法在13-17度照射13〜17微摩尔/（m2S-1）的光。 摄氏温度在夜间条件下。
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公开(公告)号：KR1020120108798A
公开(公告)日：2012-10-05
申请号：KR1020110027121
申请日：2011-03-25
Applicant: 현대자동차주식회사
CPC classification number: C08L67/04 , C08J3/005 , C08J2367/04 , C08J2423/08 , C08J2467/04 , C08L23/0884 , C08L2205/03 , B29B9/10 , B29B11/08 , C08L33/06 , C08L2201/02 , C08L2205/025
Abstract: PURPOSE: A manufacturing method of a polylactic acid composite material composition is provided to obtain a material with excellent thermal resistance, impact strength and tensile strength by controlling processing conditions and molding conditions. CONSTITUTION: A manufacturing method of polylactic acid composite material composition comprises: a step of manufacturing a molded product by melting and mulling a composition comprising 60-80 weight% of enantiomeric L-polylactic acid resin, 15-30 weight% of optical isomerism D-polylactic acid, and 5-10 weight% of a poly(ethylene-alkylacrylate-glycidyl methacrylate) resin at 190-195 °C; and a step of molding the molded product in an injection mold of which surface temperature is 100-110 °C. A melting index(MI) of the optical isomerism D-polylactic acid is 10-40 g/10 minutes(190°C, 2.16 kg load).
Abstract translation: 目的：提供聚乳酸复合材料组合物的制造方法，以通过控制加工条件和成型条件来获得具有优异的耐热性，冲击强度和拉伸强度的材料。 构成：聚乳酸复合材料组合物的制造方法包括：通过熔融和研磨包含60-80重量％的对映体L-聚乳酸树脂，15-30重量％的光学异构体D- 聚乳酸和5-10重量％的聚（乙烯 - 丙烯酸烷基酯 - 甲基丙烯酸缩水甘油酯）树脂在190-195℃; 以及在表面温度为100-110℃的注射模具中模制成型产品的步骤。 光学异构体D-聚乳酸的熔融指数（MI）为10-40g / 10分钟（190℃，2.16kg负荷）。
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公开(公告)号：KR1020110096838A
公开(公告)日：2011-08-31
申请号：KR1020100016327
申请日：2010-02-23
Applicant: 현대자동차주식회사
CPC classification number: C12P7/56 , C12N1/20 , C12P41/00 , C12Y302/01001 , C12Y302/01003
Abstract: 본 발명은 D 타입 유산의 제조방법에 관한 것으로서, 더욱 상세하게는 미도정 쌀을 알파아밀라제(α-amylase)와 아밀로글루코시다아제를 이용하여 당화시킨 후, 이를 스포로락토바실러스 이누리너스(sporolactobacillus inulinus)미생물에 의해 발효시킴으로서 D 타입 유산을 제조하는 방법에 관한 것이다. 본 발명에 의하면 국내외에서 과잉생산 되고 있는 쌀 자원의 부가가치를 높일 수 있으며, 제조된 D 타입 유산은 자동차 내외장용 식물계 소재로서 유망한 스테레오 컴플렉스 폴리유산를 제조하기 위한 D타입 폴리유산의 원료 등으로 유용하게 적용할 수 있다.
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Patent Agency Ranking
公开(公告)号：KR1020110089724A
公开(公告)日：2011-08-09
申请号：KR1020100009245
申请日：2010-02-01
Applicant: 현대자동차주식회사
CPC classification number: C08L23/10 , C08L51/06 , C08L2666/02
Abstract: PURPOSE: A polypropylene-polylactic acid composite composition is provided to ensure low correspondence to low carbon and green growth and to enable the application to automobile interiors and exteriors and constructional interiors due to excellent impact strength. CONSTITUTION: A polypropylene-polylactic acid composite composition comprises 65~70 weight% of a polypropylene resin, 15~25 weight% of a polylactic acid resin, and 5~20 weight% of a maleic anhydride-grafted ethylene-octene copolymer resin. The polypropylene resin is one kind selected from a propylene homopolymer, propylene random copolymer and propylene block copolymer and has the melt index(MI) of 0.5~30 g/10 minutes(ASTM D 1238, 230°C).
Abstract translation: 目的：提供聚丙烯 - 聚乳酸复合组合物，以确保低碳和绿色生长的低对应性，并且由于优异的冲击强度，可以应用于汽车内饰，外部和建筑内部。 构成：聚丙烯 - 聚乳酸复合组合物包含65〜70重量％的聚丙烯树脂，15〜25重量％的聚乳酸树脂和5〜20重量％的马来酸酐接枝的乙烯 - 辛烯共聚物树脂。 聚丙烯树脂是选自丙烯均聚物，丙烯无规共聚物和丙烯嵌段共聚物中的一种，其熔体指数（MI）为0.5〜30g / 10分钟（ASTM D 1238,230℃）。
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公开(公告)号：KR1020110089723A
公开(公告)日：2011-08-09
申请号：KR1020100009244
申请日：2010-02-01
Applicant: 현대자동차주식회사
CPC classification number: C08L67/04 , C08K2201/011 , C08L23/10 , C08L51/06 , C08L2205/03 , C08L2666/02
Abstract: PURPOSE: A polylactic acid composite composition is provided to reduce the exhaustion of carbon dioxides and the used amount of existing petroleum-base materials as a polylactic acid and a polypropylene resin are blended. CONSTITUTION: A polylactic acid composite composition comprises, based on 100 parts by weight of a polylactic acid in which carbon nanotubes are dispersed through an in-situ polymerization method, 80~90 parts by weight of a polypropylene resin, and 10~20 parts by weight of a maleic anhydride graft ethylene-octene copolymer resin. The polylactic acid in which carbon nanotubes are dispersed through an in-situ polymerization method is prepared by adding tin 2-ethylhexanoate to a mixture of 80~90 weight% of lactide monomers and 10~20 weight% of carbon nanotubes. The molecular weight of the polylactic acid composite composition is 80,000~150,000 g/mol.
Abstract translation: 目的：提供聚乳酸复合组合物以减少二氧化碳的耗尽，并且混合作为聚乳酸和聚丙烯树脂的现有石油基材料的使用量。 构成：聚乳酸复合组合物以100重量份通过原位聚合法分散碳纳米管的聚乳酸为80〜90重量份，聚丙烯树脂为10〜20重量份， 马来酸酐接枝乙烯 - 辛烯共聚物树脂的重量。 通过原位聚合法分散碳纳米管的聚乳酸通过在80〜90重量％的丙交酯单体和10〜20重量％的碳纳米管的混合物中加入2-乙基己酸锡来制备。 聚乳酸复合组合物的分子量为80,000〜150,000g / mol。
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公开(公告)号：KR1019960017882A
公开(公告)日：1996-06-17
申请号：KR1019940029397
申请日：1994-11-10
Applicant: 현대자동차주식회사
Inventor： 한도석
IPC: C22C21/02
Abstract: 본 발명의 자동차 부품용 내마모성 알루미늄 합금에 관한 것으로서, 더욱 상세하게는 Si, Cu, Mg, Zn 등의 성분을 함유하는 알루미늄 합금에 있어, Si, Cu, Mg, 및 Ti 등의 성분을 증가시키고 Zn 성분을 감소시키는 등 성분함량을 조정하여 고강도, 고인성 및 우수한 내마모성을 가짐으로써 자동차 엔진 및 변속기 등의 부품에 유용한 내마모성 알루미늄 합금에 관한것이다.
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公开(公告)号：KR1019950019689A
公开(公告)日：1995-07-24
申请号：KR1019930029923
申请日：1993-12-27
Applicant: 현대자동차주식회사
Inventor： 한도석
IPC: G01N21/00
Abstract: 본 발명은 자동차 디스크브레이크의 구성부품인 디스크의 습성측정장치에 관한 것으로서, 기존의 습성측정장치 보다 구조가 간단하고 사용이 간편하며 적은량 예컨대, 0.2g ~ 0.3g 정도의 시료 및 기질(sub strate)로도 그 습성측정이 가능한 디스크 습성측정장치를 제공하고자 한 것이다.
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公开(公告)号：KR101886434B1
公开(公告)日：2018-08-07
申请号：KR1020120021266
申请日：2012-02-29
Applicant: 현대자동차주식회사 , 서울대학교산학협력단
IPC: C07D319/12 , B01J31/02
Abstract: 본발명은발효공정을통하여제조되는유산단량체로부터고수율로락타이드를제조하는방법에관한것으로서, 더욱상세하게는유산을특정용매로처리하고촉매를가하여반응시킨다음상분리하여락타이드를제조함으로서고순도이면서도고수율로락타이드를제조할수 있어서폴리유산의원가를대폭낮출수 있는개선된락타이드의제조방법에관한것이다.
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