D***0
发帖数: 5214 | 1 For your reference～ from MSDS
0w40
C14-16-18 ALKYL PHENOL
0.1 - < 1%
CALCIUM HYDROXIDE
0.1 - < 1%
CATALYTIC DEWAXED LIGHT PARAFFINIC OIL (PETROLEUM)
30 - < 40%
POLYOLEFIN POLYAMINE SUCCINIMIDE
1 - < 5%
ZINC BIS(O,O-DIISOOCTYL) BIS(DITHIOPHOSPHATE)
0.1 - < 1%
1-DECENE, HOMOPOLYMER HYDROGENATED
10 - < 20%
DISTILLATES, HEAVY, C18-50 - BRANCHED, CYCLIC AND LINEAR
40 - < 70%
ZINC DITHIOPHOSPHATE
0.1 - < 1%
感觉新的配方很酷。。。 |
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q**x
发帖数: 1636 | 2 My client one of the largest petrochemical companies in the world is in need
of a Senior Mechanical Engineer to join their engineering team.
As the Senior Mechanical Engineer you will need to demonstrate proficiency
in working with piping systems and process equipment (pressure vessels,
towers, exchangers, pumps and compressors).This position will require a you
to be able to deal effectively with counterparts in licensee organizations,
contractors and other polyolefins licensing and research or... 阅读全帖 |
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q**x
发帖数: 1636 | 3 My client one of the largest petrochemical companies in the world is in need
of a Senior Mechanical Engineer to join their engineering team.
As the Senior Mechanical Engineer you will need to demonstrate proficiency
in working with piping systems and process equipment (pressure vessels,
towers, exchangers, pumps and compressors).This position will require a you
to be able to deal effectively with counterparts in licensee organizations,
contractors and other polyolefins licensing and research or... 阅读全帖 |
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j*********g
发帖数: 32 | 4 最近看到exxon mobile chemical有几个关于polyolefin的职位出来，想试一下。不知
道有没有朋友了解这家公司的状况，和这几个职位的情况。欢迎任何相关的信息。在这
先谢谢了。 |
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q**x
发帖数: 1636 | 5 【 以下文字转载自 JobHunting 讨论区 】
发信人: quix (uglyDuck), 信区: JobHunting
标 题: Senior Mechanical Engineer
发信站: BBS 未名空间站 (Fri Oct 4 13:38:05 2013, 美东)
My client one of the largest petrochemical companies in the world is in need
of a Senior Mechanical Engineer to join their engineering team.
As the Senior Mechanical Engineer you will need to demonstrate proficiency
in working with piping systems and process equipment (pressure vessels,
towers, exchangers, pumps and compressors).This position will requir... 阅读全帖 |
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J******U
发帖数: 623 | 6 希望大家能给帮忙给指导下
我在int-adv，脚比较宽，平足，102 -3mm，但是又小，25cm。看中了ross all track
100, 找机会下了个单，然后研究下发现shell的材料不好啊，polyolefin，天冷会更加
硬。。。
于是转向了，lange sx 100，同样的，102mm 宽，但是材料更好点，就是liner更冷点
想问下有经验的前辈，all track是好鞋吗？如果这个材料确实不行，sx 100 如何？
另外就是卖鞋的建议我上100mm，for better performance，但是脚疼啊，这个建议大
家也不会采纳吧？ |
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q**x
发帖数: 1636 | 7 【 以下文字转载自 JobHunting 讨论区 】
发信人: quix (uglyDuck), 信区: JobHunting
标 题: Senior Mechanical Engineer
发信站: BBS 未名空间站 (Fri Oct 4 13:38:05 2013, 美东)
My client one of the largest petrochemical companies in the world is in need
of a Senior Mechanical Engineer to join their engineering team.
As the Senior Mechanical Engineer you will need to demonstrate proficiency
in working with piping systems and process equipment (pressure vessels,
towers, exchangers, pumps and compressors).This position will requir... 阅读全帖 |
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L**i
发帖数: 22365 | 8 then why you mentioned local oil company only?
petroleum chemist prefer having strong background of polyolefin, catalyst
chemistry as I know
your background dose not match them...
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y***o
发帖数: 416 | 9 1. Thermorheological Behavior of Various Long-Chain Branched Polyethylenes
Macromolecules, 2008, 41 (4), pp 1328–1333
DOI: 10.1021/ma702367a
http://pubs.acs.org/doi/abs/10.1021/ma702367a
2.Influence of Type and Content of Various Comonomers on Long-Chain
Branching of Ethene/α-Olefin Copolymers
Macromolecules, 2006, 39 (4), pp 1474–1482
DOI: 10.1021/ma0514018
http://pubs.acs.org/doi/abs/10.1021/ma0514018
3. Influence of the Molecular Structure of Polyolefins on the Damping
Function in Shear
Macro... 阅读全帖 |
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y***o
发帖数: 416 | 11 1. Olefin polymer technologies—History and recent progress at The Dow
Chemical Company
Progress in Polymer Science
Volume 33, Issue 8, August 2008, Pages 797–819
http://dx.doi.org/10.1016/j.progpolymsci.2008.05.003
2. Technology: driving force behind innovation and growth of polyolefins
Progress in Polymer Science
Volume 26, Issue 8, October 2001, Pages 1287–1336
http://dx.doi.org/10.1016/S0079-6700(01)00029-6
3. Ziegler-Natta catalysts for olefin polymerizations
Progress in Polymer Science
Volu... 阅读全帖 |
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z***x
发帖数: 9 | 12 来自主题: Macromolecules版 - Talk-3 Polyhomologation Reaction.
K. J. Shea, UC-Irvine
JACS, ASAP.
Chemistry, A European Journal, 2000, 6, 1113
利用硼烷的1，2-migration, 以ylide作为单体， 实验一种全新的方法合成高分子。
the polymer chain grows one carbon at a time.不同于传统的高分子合成，
the polymer chain grows two carbon at a time.
该反应为一living polymerization method， 利用不用的硼烷可以合成出telechelic
polyethylene， 不同的topology,
利用不同的ylide ， 可以合成出不同的polyolefin.
很fancy的一种合成方法， 虽然看不出有多少工业应用前景。。 |
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c*******n
发帖数: 1648 | 13 found this board this week, BM is a friend, feel excited.
bring some water here.
Those guys are right, Tg+100 should be a good processing temperature for
amorphous polymer. However, it could be lower, but 120C or 130C may not be enough
I don't know what you will do with your compression molded samples.
Generally color is usually seen for NYLON and some rubber compounds. Polyolefins
should be ok. color is not big problem for mechanical test or even rheological
test. First let your pellets sit on |
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w********h
发帖数: 12367 | 14 welcome ah..
enough
Polyolefins
rheological
5-10
continually
it |
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y****u
发帖数: 50 | 15 Thanks for all the advices.
I used 140 C. I warmed the sample for 6 minutes (keeping small clearance),
then pumped 3-5 times (less than 1 min), compressed for 6 min. As a result,
the coloring was negligible. but still there were a few tiny bubbles inside (I
guess there were more invisible). Maybe I should pump it longer.
enough
Polyolefins
rheological
5-10
continually
it |
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z*x
发帖数: 199 | 16 Single site catalysis is definitely important.
For Ewen, he also found Cs type catalyst which can get syndiotactic pp.
He also got president medal last year,I think
he should have more chance than TJ Marks
for
possible
olefin
million
polyolefins. |
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c*s
发帖数: 2145 | 17 A
ABA
acrylonitrile-butadiene acrylate
ABS
acrylonitrile-butadiene styrene terpolymer
ACS
acrylonitrile-chlorinated polyethylene styrene terpolymer
AMA
acrylate maleic anhydride terpolymer
AMMA
acrylonitrile-methyl methacrylate
APO
amorphous polyolefin
ASA
acrylonitrile styrene acrylate
B
BMC
bulk molding compound
BMI
bis maleimide
C
CA
cellulose acetate
CAB
cellu |
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w********h
发帖数: 12367 | 18 ***** Information for SoR Members *****
Rheologist - Requisition #0700420
Chevron Phillips Chemical Company LLC, and its affiliates, is one of
the world's top producers of olefins and polyolefins and a leading
supplier of aromatics, alpha olefins, styrenics, specialty chemicals,
piping,
and proprietary plastics. Chevron Phillips Chemical employs over 5,000
professionals at manufacturing sites and research / technology centers
around the world. Chevron Phillips Chemical has the people, assets,
an |
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a****d
发帖数: 524 | 19 长链 1-alkene 的AIBN homo-聚合，应该是很简单的聚合可是怎么也聚合不起来呢，
200：1，
100 度， 是自由基和单体比例太高？ 还是温度有点稍高？还是单体本身聚合活性太差
？ 本来挺简单
的聚合啊～～请有经验的给点clue ～～谢谢 |
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a****d
发帖数: 524 | 22 1-OCTADECENE, CH2=CH(CH2)15CH3, 转移给？我在体系中还加了点THF 溶解AIBN的，
不知道
有没有影响 |
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a****d
发帖数: 524 | 23 形成稳定的烯丙基自由基？ 那该怎么让它聚合起来呢？ Ziegler-Natta catalyst? |
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c******h
发帖数: 4573 | 24 你把产物做个核磁看看呢？那么长的链即使是没有链转移也有位阻吧？
好像是用Zielar-Natta 催化剂做的。 |
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m*****e
发帖数: 1506 | 25 1-alkene是non-active单体，能自由基自聚就奇怪了，就是与活性单体共聚，转化率和
引入率也都很低。 |
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z****g
发帖数: 10 | 27 就算乙烯丙烯，他这条件也聚不出来。要不Ziegler Natta也不用得奖了 |
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a*****a
发帖数: 210 | 28 It's impossible by AIBN. Too many methylene (-CH2-) in molecules which kill
free radical, especially alpha methylene. It is a degradative free radical
trap. It is in text book on polymerization. Some oligomers (<30%) will
produce after 6 hours at 120C with dicumyl peroxide verified by GPC. |
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发帖数: 1 | 29 本人多年从事polymer chemistry, organometallic, nanomaterials的研究工作，最近
在展审稿数量申绿，求推荐。以下是我的研究领域：
• Strong proficiency in design multi-step organic/organometallic/
inorganic syntheses under the various conditions, design of synthetic
strategy based on goal compound, cultivation of single crystals, synthesis
and characterization of organometallic compounds (Pd, Al, Sc, Y, Ti, Zr, Hf,
Fe, Co, Ni, Cr, Ir, Ru), macromolecules and nanomaterials:
1. Cross-Coupling polymerization: design, synthesis an... 阅读全帖 |
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发帖数: 1 | 30 本人多年从事polymer chemistry, organometallic, nanomaterials的研究工作，最近
在展审稿数量申绿，求推荐。以下是我的研究领域：
• Strong proficiency in design multi-step organic/organometallic/
inorganic syntheses under the various conditions, design of synthetic
strategy based on goal compound, cultivation of single crystals, synthesis
and characterization of organometallic compounds (Pd, Al, Sc, Y, Ti, Zr, Hf,
Fe, Co, Ni, Cr, Ir, Ru), macromolecules and nanomaterials:
1. Cross-Coupling polymerization: design, synthesis an... 阅读全帖 |
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q**x
发帖数: 1636 | 31 【 以下文字转载自 JobHunting 讨论区 】
发信人: quix (uglyDuck), 信区: JobHunting
标 题: Senior Mechanical Engineer
发信站: BBS 未名空间站 (Fri Oct 4 13:38:05 2013, 美东)
My client one of the largest petrochemical companies in the world is in need
of a Senior Mechanical Engineer to join their engineering team.
As the Senior Mechanical Engineer you will need to demonstrate proficiency
in working with piping systems and process equipment (pressure vessels,
towers, exchangers, pumps and compressors).This position will requir... 阅读全帖 |
|
