John Dee's Monas Hieroglyphica translated and introduced by C H Josten
T. Neuner; R. Josten; N. Sary, H. Stange - SGF[Kirk-Othmer Encyclopedia of Chemical Technology]...
Transcript of T. Neuner; R. Josten; N. Sary, H. Stange - SGF[Kirk-Othmer Encyclopedia of Chemical Technology]...
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New options with Baypren ® K. Varnhorn T. Neuner; R. Josten; N. Sary, H. Stange
Sveriges Gummitekniska Förenings vårkonferens
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Introduction:
Lanxess offers a broad range of
Polychloroprene rubbers.
Baypren® is a commonly used
elastomer due to it´s multi-purpose
properties.
A new finishing line offers new
options and keep the establish
properties of Baypren ®.
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Agenda
Introduction, Polychloroprene
New products by new technology
New finishing – new possibilities
Summary
New products in compound studies
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b) linear, non-uniform configuration
c) linear, reactive endgroups
Cl
Cl
n
Cl
Cl
Cl
Cl
X
Cl Cl Cl Cl
X
n
R S S R
d) precrosslinked
R R
R
R RR
R RR
R R
R
R
e) sulphur modified
comonomer
a) linear, uniform configuration
variations in MW and MW-distribution
Ve
Cl Cl Cl Cl
n
determines Mooney viscosity
What is Polychlorprene - Baypren® ?
Low crystallization tendency
XD types
determines gel content
S types
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Conventional Lanxess CR products
30
40
50
60
70
80
90
100
110
120
General purpose grades
non precrosslinked
116
226
110
126
112
230
210
211
216
Mo
on
ey v
isc
os
ity *
M L
1+
4/1
00
°C
Pre-
crosslinked
types
214
215
Sulphur modified
grades
510 611
114
711 712
110
Adhesive
grades Latex grades
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The first new grades:
Baypren® 100 A VP
Baypren® 200 A VP
Baypren® 110 A VP
Baypren® 210 A VP
Baypren® 126 A VP
Baypren® 216 A VP
Baypren® 110 A VP
110 crystallization, slow
210 cryst. medium
110 Mooney range
100 low Mooney
110 mercaptane
116 xanthogene
disulfid
A VP new, trial product Improved
Performance
Alternative
Performance
Special
Performance
Three groups of new Baypren® ‘s Nomenclature
Reduced marching modus
Low Mooney
grades,
better
extrusion
performance
Improved vulcanization
characteristics with MTT
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Standard and new process
„…in that connection, freeze roll isolation of very low Mooney viscosity polymers or fluid polymers is
difficult or virtually impossible.“
[Kirk-Othmer Encyclopedia of Chemical Technology]
Neutralization Coagulation
Freeze roll Washing Drying Roping Chopping
Coagulation Dewatering Drying Chopping
Standard process
New (alternative) process
Standard New
Lowest
Mooney
37 28
Resources consumption
Ammonia -
Steam
Water
Natural gas -
Electricity
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Focus of the presentation
Baypren®
Standard Mooney
Low Mooney
Mercaptane Xantogene Disulfide
Standard Mooney
ETU MTT
ETU MTT ETU MTT
Fast cure regular cure
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Low Mooney grade B200A VP - Extrusion
Baypren® 210 Standard 100 50
Baypren® 200A VP 100 50
REGAL® SRF / N772 30 30 30
EDENOR® C 18 98-100 0,5 0,5 0,5
Scorchguard® O 5,3 5,3 5,3
ZINKWEISS ROTSIEGEL® 5 5 5
Edenol® 888 8 8 8
MTT based Crosslinking x x x
0
5
10
15
20
25
30
35
40
45
0 100 200 300 400
Mo
one
y-V
isco
sity
[MU
]Time [s]
Mooney viscosity compound
B210
B210-B200 50/50
B200A VP
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B210 - B200A VP – Extrusion Die swelling
Lower die swell for low
Mooney B200 compared to
B210
Significant reduced die
swell for blend of
B210: B200 (50:50)
Less nerve
Advantages in calandering
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B210 - B200A VP – Extrusion Volume output
Higher Volume output for
low Mooney B200
compared to B210
Significant increased
output for blend of
B210: B200 (50:50)
Higher output, higher
production rate
Advantage also for semi-
finished products
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B210 - B200A VP – Extrusion Energy consumption
Lower Energy consumption
for low Mooney B200
compared to B210
Significant reduced
Energy consumption for
blend of
B210: B200 (50:50)
Safe energy cost
Less compound
temperature
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B210 - B200A VP Mechanical properties
Stress strain curve for
standard and low Mooney
material comparable
No lack of mechanical
properties if low Mooney
material is used
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B210 - B200A VP Compression set - hardness
22
29
2427
3028
53 53 54
0
10
20
30
40
50
60
B210 Standard B200A VP B210-200
Co
mp
ressio
n s
et (%
)H
ard
ne
ss (
ShA
)
CS 70h /22°C
CS 70h /70°C
Hardness(ShA)
Compression set at
evaluated temperatures for
a blend of low Mooney/
standard material is
comparable to standard
Low Mooney material
slightly increase
compression set
No influence on hardness
with low Mooney material
and blend of thereof
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B110 – B100A VP Injection moulding
Injection moulding
formulation possible
Investigate the influence of
low Mooney CR on flow
behaviour and filling
degree of injection
moulding cavity
BAYPREN® 110 100 70 50
BAYPREN® 100A VP 30 50
SCORCHGUARD® O 5,3 5,3 5,3
ZINKWEISS ROTSIEGEL 5 5 5
EDENOR® C 18 98-100 1 1 1
CORAX® N 330 15 15 15
REGAL® SRF / N772 35 35 35
EDENOL® 888 10 10 10
TUDALEN® 1849-TE 10 10 10
RHENOFIT® DDA-70 1,5 1,5 1,5
RHENOGRAN® MBTS-80 1,25 1,25 1,25
RHENOGRAN® MTT-80 1 1 1
Injection moulding formulation
MTT based curing system
Blends of Baypren ® 110 Standard (40 MU)
and Baypren ® 100A VP low Mooney (34 MU)
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B110 – B100A VP Compound Mooney – Filling degree
Compound Mooney
decrease with the addition
of 30 and 50 parts low
Mooney CR
Degree of filling increase
with the addition of 30 and
50 parts low Mooney CR
Better filling of IM cavity
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Summary I: Low Mooney grades
Summary low Mooney grades
Baypren ® A VP low Mooney grades offer low Mooney viscosity about 28 MU
Baypren ® A VP low Mooney grades have comparable mechanical properties to standard grades despite lower Mooney viscosity
Baypren ® A VP low Mooney grades offer
better flowing
lower die swell
higher out put
lower energy consumption
Baypren ® A VP low Mooney grades offer new compounding option combinations of high and low Mooney polymers e.g. B230 / B200
Baypren ® A VP low Mooney grades can support to optimize processing
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Curatives ETU and MTT
Most vulcanization systems for CR contain either ETU or MTT as curative.
“US Environmental Protection Agency” (EPA) has classified ethylene thiourea as a group B2, probable human carcinogen.
Therefore ETU is restricted in many countries. Customers looking for alternatives like MTT.
ETU Ethylene thiourea (Imidazolidin-2-thion) Trade names (Rheinchemie) Rhenogran® ETU 80 Rhenocure® NPV/C former Vulkacit® NPV/V
MTT N-Methyl-thiazolidin-2-thion Trade names (Rheinchemie) Rhenogran® MTT 80, Rhenocure® CRV/LG former Vulkacit® CRV
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B110 - MTT curing - MDR
Temperature and level of
curative influence the cure
rate (and the maximum
torque)
Baypren® 110 100 100 100
REGAL® SRF / N772 30 30 30
EDENOR® C 18 98-100 0,5 0,5 0,5
Scorchguard® O 5,3 5,3 5,3
ZINKWEISS ROTSIEGEL 5 5 5
RHENOGRAN® MTT 0,5 0,5 1
Rhenofit® DDA 70 1,5 1,5 1,5
Variation in temperature and MTT level
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B110 – B110A VP MTT curing – MDR – Part I
0
2
4
6
8
10
12
14
16
18
20
0 300 600 900 1200 1500 1800 2100 2400
S' [
dN
m]
Time [s]
B110 MTT 0,5 180°C
B110 MTT 0,5 160°C
B110 MTT 1,0 160°C
B110 (ref.) MTT 0,5 160°C
B110A VP (fast) MTT 0,5 160°C
B110A VP (regular) MTT 0,5 160°C
1 phr
New, regular
New, fast
180°C
Temperature and level of
curative influence the cure
rate (and the maximum
torque)
Cure rate of new B110A VP
(fast) only be achieved with
the new material not with
variation of temperature or
curative level
B110 MTT
0,5 180°C
B110 MTT
0,5 160°C
B110 MTT
1,0 160°C
B110 (Ref.) MTT
0,5 160°C
B110 (fast) MTT
0,5 160°C
B110 (regular) MTT
0,5 160°C
Polymer B110 B110 B110 B110 B110A VP fast B110A VP regular
RHENOGRAN® MTT-80 0,5 0,5 1 0,5 0,5 0,5
Rhenofit® DDA 1,5 1,5 1,5 - - -
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B110 – B110A VP MTT curing – MDR - Part II 160°C
Baypren® 110 100
Baypren® 110A VP (fast) 100
Baypren® 110A VP (regular) 100
Scorchguard® O 5,3 5,3 5,3
ZINKWEISS ROTSIEGEL 5 5 5
EDENOR® C 18 98-100 1 1 1
REGAL® SRF / N772 30 30 30
RHENOGRAN® MTT-80 1 1 1
MBTS® 80% 1,25 1,25 1,25
Rhenofit® DDA 1,5 1,5 1,5
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Summary II: Improved MTT curing
Summary Improved MTT curing
Baypren ® A VP grades have improved cure rates for MTT
Curing curve is close to an ideal curing curve
Polymer variations are possible to further adapt the vulcanization rate of MTT curing
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b) linear, non-uniform configuration
c) linear, reactive endgroups
Cl
Cl
n
Cl
Cl
Cl
Cl
X
Cl Cl Cl Cl
X
n
R S S R
d) precrosslinked
R R
R
R RR
R RR
R R
R
R
e) sulphur modified
comonomer
a) linear, uniform configuration
variations in MW and MW-distribution
Ve
Cl Cl Cl Cl
n
determines Mooney viscosity
XD grades from alternative finishing
Low crystallization tendency
XD types
determines gel content
S types
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B216 – B216A VP Comparison
Baypren® 216 100
Baypren® 216A VP 100
REGAL® SRF / N772 30 30
EDENOR® C 18 98-100 0,5 0,5
Scorchguard® O 5,3 5,3
ZINKWEISS ROTSIEGEL 5 5
RHENOGRAN® ETU-80 0,5 0,5
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B216 – B216A VP Scorch (120°C) – MDR 160°C
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B216 – B216A VP Mechanical properties
Mooney scorch,
comparable to standard
MDR, lower final torque
maximum with ETU,
slightly improved marching
modulus
Stress strain curve
comparable
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B216 – B216A VP Compression set - Hardness
Compression set and
hardness are on a similar
level for the evaluated
formulation
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Summary III: XD grades General summary
Summary XD grades
XD grades obtained by new finishing offer a very similar material performance in terms
of vulcanization and mechanical properties
Summary Improved MTT curing
Baypren ® A VP grades have improved cure rates for MTT
Polymer variations are possible to further adapt the vulcanization rate of MTT curing
Summary low Mooney grades
Baypren ® A VP low Mooney grades have comparable mechanical properties to
standard grades despite lower Mooney viscosity
Baypren ® A VP low Mooney grades can support to optimize processing
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Disclaimer
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Internet: www.lanxess.com
http://www.mandatory-information.gmbh.lanxess.com
The manner in which you use and the purpose to which you put and utilize our products, technical
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agree in writing, all products are sold strictly pursuant to the terms of our standard conditions of sale.
All information and technical assistance is given without warranty or guarantee and is subject to
change without notice. It is expressly understood and agreed that you assume and hereby expressly
release us from all liability, in tort, contract or otherwise, incurred in connection with the use of our
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to use any product in conflict with patents covering any material or its use. No license is implied or in
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