Vinyl chloride/vinyl acetate copolymer
SOLBIN
-
-
SOLBIN is a modified resin that combines the toughness and chemical resistance of vinyl chloride, strong adhesiveness and prasticity of vinyl acetate, and other polar groups that enhance adhesivity and solubility. Due to its many outstanding characteristics, including its lack of odor or taste and high resistance to water penetration, SOLBIN has been used as a binder for magnetic cards and tapes, as a coating agent for soft drink cans and moisture-proof cellophanes, and as an essential part of various paints, inks, and adhesives.
Characteristics of SOLBIN
SIOBIN is a copolymer resin prepared from vinyl chloride and vinyl acetate in addition to other element, and has the following charactersitics:
- (1) It dissolves in organic solvents such as ketone and ester.
- (2) It forms an odorless, tasteless, and transparent film.
- (3) It is highly resistant to chemicals such as acids, alkalis, and brine.
- (4) It forms a coating film highly resistant to water.
- (5) Its coating film are fire-retardant and self-extinguishing.
- (6) Its coating films are thermoplastic and heat-sealable.
- (7) It is highly compatible with urethane and melamine resins.
- (8) Products with hydrophilic groups favorably disperse inorganic pigments such as magnetic powder.
- (9) Products with hydroxyl groups react with isocyanate to form cross-links.
Product types

Characteristics of Product Line
For coatings and adhesive processing uses
| Grade | Composition(% by weight) | Degree of polyme-rization |
Average c molecular Mn(x104) |
Glass transition temperature (℃) |
Viscosity (mPa・s) |
K-value | Features | Uses | ||
| VC | VAc | Other | ||||||||
| C | 87 | 13 | 420 | 3.1 | 70 | 150 ª | 48 |
・ It is gastight and highly resistant to water and chemicals. |
・ Heat-seal ・ Internal coating of solt drink cans ・ Moisture-proof cellophane coating ・ Rotogravure ink |
|
| CL | 86 | 14 | 300 | 2.5 | 70 | 60 ª | 41 |
・ It is less viscous than grade C and highly soluble. |
・ Silk-screen ink ・ Top coating on galvanized color iron plate ・ Adhesive ・ Processed pigment |
|
| CH | 86 | 14 | 650 | 3.8 | 73 | 700 ª | 55 |
・ It is more viscous than Grade C, ・ highly transparent and resisitant to heat and weather. |
・ Waterproof agent for tents ・ Strippable paint ・ Rotogravure ink ・ Adhesive |
|
| CN | 89 | 11 | 750 | 4.2 | 75 | 40b | 59 | It is highly viscous and forms and strong coating film. | ・ Vinyl leather surface treatment Rotogravure ink Strippable paint Adhesive |
|
| CNL | 90 | 10 | 200 | 1.2 | 76 | 30 ª | 35 | ・ It is less viscous than grade CN and highly soluble. |
・ Rotogravure ink ・ Silk-screen ink ・ Processed pigment |
|
| C5R | 79 | 21 | 350 | 2.7 | 68 | 60 ª | 47 | ・ It is highly soluble. |
・ Nonwoven fabric binder ・ Adhesive |
|
■ For paiting and printing uses ■ For magnetic recording uses
| Grade | Composition(% by weight) | Degree of polyme- rization |
Average cmolecular Mn(x104) |
Glass transition temperature (℃) |
Viscosity (mPa・s) |
K-value | Features | Uses | ||
| VC | VAc | Other | ||||||||
| A | 92 | 3 | 5f | 420 | 3.0 | 76 | 220 ª | 48 | ・ It is compatible with urethane, nitrocellulose alkid, acryl, malamine, and urea resins. |
・ Heat-seal ・ magnetic tape, magnetic card binder ・ Internal coating of soft drink cans ・ Galvanized color iron ・ Ship bottom paint ・ Processed pigment ・ Rotogravure ink ・ Cap outer surface coat |
| AL | 93 | 2 | 5f | 300 | 2.2 | 76 | 70 ª | 41 | ・ Less viscous than grade A. | |
| TA5R | 88 | 1 | 11f | 300 | 2.8 | 78 | 130 ª | 41 | ・ It favorably diperses pigments and magnetic powder and is highly soluble in ethyl acetate. |
・ Floppy disk binder Environmentally fiendly rotogravure ink |
| TA2 | 83 | 4 | 13g | 500 | 3.3 | 70 | 300 ª | 51 | ・ It favorably disperses pigments and magnetic powder and is more thermostable thangrade A./p> |
・Magnetic tape, ・ magnetic card binder |
| TA3 | 83 | 4 | 13g | 350 | 2.4 | 65 | 100 ª | 45 | ・ Less viscous than grade TA2. |
・ Woodpaint, Rotogravure ink ・ Magnetic tape, magnetic card binder |
| TAO | 91 | 2 | 7 f | 360 | 1.5 | 77 | 230 ª | 45 | ・ It favorably disperses pigments and magnetic powder |
・ Magnetic tape, magnetic card binder ・ Rotogravure ink |
| TAOL | 92 | 2 | 6 f | 280 | 1.4 | 70 | 100 ª | 40 | ・ Less viscous than grade TAO. | |
| M5 | 85 | 14 | 1 d | 420 | 3.2 | 70 | 130 ª | 48 | ・ It strongly adheres to metal aluminum and cellophane. |
・ Adhesive Heat-seat for aluminum foil |
| MFK | 90 | 7 | 3 e | 440 | 3.3 | 80 | 30 b | 49 |
・ As fine powder, ・ mixable with PVC paste resin, ・ it strongly adheres to metals. |
・ Adhesive ・ Sealant for automobiles ・ Wire coating |
- Note:The values in the table are typical values.
-
- a:Resin concentration;20wt%, solvent;MIBK/toluene=1/1Measured by Type B viscometer(25℃)
- b:Resin concentration;10wt%, solvent;MIBK/toluene=1/1
- c:Number average molecular weight
- d:Dicarboxyloic acid
- e:Acrylic acid
- f:Vinyl alcohol
- g:Hydroxyalkyl acrylate
Properties of SOLBIN
(1) Powder properties of representative SOLBIN
| Item | C | A | M5 | MFK | Test method |
|---|---|---|---|---|---|
| Particle size | 50~60μ | 70~80μ | 60~70μ | 60~70μ | Optical tansmission particle-size distribution meter |
| Sieve test 100mesh pass |
90% | 60% | 60% | 99% | 100 mesh pass 149μ * |
| Sieve test 200mesh pass |
10% | 5% | 10% | 70% or heigher |
200 mesh pass 74μ * |
| Specific gravity | 1.4 | 1.4 | 1.4 | 1.4 | |
| Bulk specific gravity | 0.8 | 0.7 | 0.7 | 0.5 | JIS K-6721 |
| Repose angle | 23~25° | 25~28° | 40~50° | 40~50° | |
| Electrification |
・Max +1500V ・After 10 seconds +400V ・After 1 minute 0 |
・Min -1500V ・After 30 seconds ・After 1 minute |
STATIRON M static electricity meter (20℃×60%RH) |
* JIS Standard sieve
(2) Film properties of representative SOLBIN
●Physical properties
| Item | C | A | M5 | Test method |
| Moisture permeability of film (g/m₂・day) |
170 | 130 | 180 | JIS Z-0208 40±0.1℃ 90±2%RH 0.02~0.03mm thickness |
|---|---|---|---|---|
| Physical properties Elongation(%) Tensile strength(kg/mm₂) Young's modulus(dyne/cm₂) |
1~2 4~6 2~3×1010 |
1~2 4~6 2~3×1010 |
2~3 4~5 2~3×1010 |
23±1℃ 80±2%RH |
●Chemical resistance
| Test item | Chemical | Immersion time | C | A | M5 |
|---|---|---|---|---|---|
| Acid resistance | 10% HNO3 | 144hours | Excellent | Excellent | Excellent |
| Alkali resistance | 10% NaOH | 144hours | Excellent | Excellent | Excellent |
| Water resistance | Pure water | 144hours | Excellent | Excellent | Excellent |
| Brine resistance | 5% brine | 144hours | Excellent | Excellent | Excellent |
| Alcohol resistance | 60% ethyl alcohol | 144hours | Excellent | Excellent | Excellent |
| Hot water resistance | Pure water 77℃ | 45minutes | Excellent | Slightly whitened | Slightly whitened |
(3) Organic solvents used in SOLBIN
| Temperature | 25℃ | 50℃ | Temperature | 25℃ | 50℃ | ||
|---|---|---|---|---|---|---|---|
| Solvent | Metanol | × | × | Solvent | Cellosolve | △ | △ |
| IPA | × | × | Acetone | ○ | ○ | ||
| n-Butanol | × | × | MEK | ○ | ○ | ||
| Methyl acetate | × | ○ | MIBK | ○ | ○ | ||
| Ethyl acetate | △ | ○ | Isophorone | ○ | ○ | ||
| Butyl acetate | △ | ○ | Cyclohexanon | ○ | ○ | ||
| DIDP | △ | △ | Ethylene chloride | ○ | ○ | ||
| DINP | △ | △ | Toluene | × | × | ||
| Tetrahydrofuran | ○ | ○ | Solvesso #150 | × | △ | ||
| Dioxane | ○ | ○ | Aliphatic carbide | × | × | ||
- ○:Soluble
- △:Swells or partially insoluble
- ×:Insoluble




