 GOHSERAN
 |
GOHSERAN L has excellent properties beyond those of standard PVOH resins. It is used as an emulsifier, dispersant, adhesive, coating agent, and binder, and new applications are being found regularly.
It is a modified PVOH with a sulfonic group (-SO3X group) on its side chain.
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Properties
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| L-3266 |
| • |
Excellent emulsifying power and protective colloid properties. |
| • |
In acrylic or styrene emulsion form, it is capable of stable emulsification polymerization unachievable with standard PVOH. The GOHSERAN-based emulsion boasts excellent stability and has various additional features. |
| • |
It is a powerful dispersant of organic or inorganic materials. |
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| L-0301、L-0302 |
| • |
As well as being water-soluble, these grades are also soluble in an organic solvents such as methanol, ethanol, methyl acetate or acetone, and in aqueous mixture solutions. |
| • |
They become molten at a temperatures of 100 to 180 degree C, and are capable of coating and bonding as a hot melt materials. |
| • |
They are effective as a dispersant or binder for organic or inorganic material. |
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Product Grade |
Saponification Degree
( mol％ ) |
Viscosity
( mPa•s ) |
Applications |
|
|
L-3266 |
86.5 ~ 89.0 |
2.3 ~ 2.7 |
Dispersant, emulsifier |
|
L-0302 |
43.5 ~ 49.5 |
13.0 ~ 17.0b) |
Hot melt adhesive |
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L-0301 |
− |
5.0 ~ 7.0b) |
|
a) Viscosity of 4% aqueous solution at 20 degree C
b) 10% aqueous solution of water/methanol |
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|
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Polymerization Recipe |
Surfactant Recipe |
GOHSERAN L-3266 Recipe |
Monomer |
Butyl
acrylate |
Ethyl
acrylate |
Butyl
acrylate |
Ethyl
acrylate |
Styrene |
|
Solid content (%) |
40 |
40 |
40 |
40 |
40 |
Coagulation (%/monomer) |
4 |
3 |
Trace amount |
Trace amount |
Trace amount |
Emulsification state |
Ο |
Ο |
Ο |
Ο |
Ο |
Viscosity (cps at 30 degree C) |
9 |
9 |
4600 |
2800 |
1200 |
Structural viscosity index |
− |
− |
0.71 |
0.69 |
0.62 |
Grain size (mu) |
140 |
− |
60 |
60 |
45 |
Low temperature stability |
Δ |
Δ |
Ο |
Ο |
Ο |
Transparency of film |
Ο |
Ο |
Ο |
Ο |
Ο |
|
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Emulsification polymerization |
|
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Polymerization recipe: |
Monomer concentration 40% |
|
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Emulsifier (%/whole system) |
|
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Surfactant; LEVENOL WZ/NOYGEN ET-170 0.3/1.2 |
|
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GOHSERAN L-3266 4.0 |
|
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Polymerization initiator, and additive (%/whole system) |
|
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Potassium peroxosulfate/sodium secondary phosphate 0.2/0.33 |
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Duration of dripping of monomer |
3 hours |
|
Polymerization temperature |
60-70 degree C |
|
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|
 |
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GOHSERAN L-0301 |
GOHSERAN L-0302 |
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Solubility in: |
Water |
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Water/methanol |
| |
Methanol, ethanol |
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Methyl acetate, ethyl acetate |
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Acetone, methyl ethyl ketone |
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Toluene, trychlene |
|
|
|
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Heat melting
property: |
Incipient fluidization temperature ( degree C), absolutely dried |
|
20 degree C, 65% RH |
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Melt viscosity (poise) |
160 degree C |
|
|
180 degree C |
|
|
200 degree C |
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Tg ( degree C) |
|
|
135 |
80 |
11000 |
5400 |
1100 |
57 |
|
Film: |
Solubility in water (%) |
Physical property: |
Equilibrant hygroscopicity (%) |
20 degree C, 65% RH |
|
|
40 degree C, 90% RH |
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Initial Young's modulus (109dyne/cm2 |
| |
Yield strength (kg/cm2) |
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Rupture strength (kg/cm2) |
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Elongation (%) |
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Thermal melting properties |
Koka flow tester; orifice, dia. 1mmΦ×L10mm |
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load 10 kg/cm2, temperature increase rate 1 degree C/min |
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Melt viscosity 20kg/cm2 |
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Film properties |
200μ-thick |
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Solubility in water Immersed in water at 20 degree C for 24 hours |
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Tensile strength Autograph, tensile speed 100 mm/min
20 degree C×65% RH |
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Anionic PVOH
