Hot Melt Adhesive (Glue)
Polyvinyl Butyral (PVB) Resin
Characteristics: PVB resins can be divided into different levels according to their molecular weight and degree of acetalization.
1) High Butyral and Low Viscosity PVB Resin
Indicator
Unit
SDL-28B
SDL-18B
SDL-08B
SDL-04B
SDL-05B
SDL-IB
SDL-06B
SDM-01
Volatile content
Wt-%
≤2.0
≤2.0
≤2.0
≤2.0
≤2.0
≤2.0
≤2.0
≤2.0
Non volatile content
Wt-%
≥98.0
≥98.0
≥98.0
≥98.0
≥98.0
≥98.0
≥98.0
≥98.0
Butyral content
Wt-%
76-85
76-85
76-85
76-85
76-85
76-85
76-85
76-85
Acetate content
Wt%
≤3.0
≤3.0
≤3.0
≤3.0
≤3.0
≤3.0
≤3.0
≤3.0
Hydroxy content
Wt%
12-17
12-17
12-17
12-17
12-17
12-17
12-17
12-17
10% viscosity
mpa.s
9-14
14-20
20-30
30-55
35-60
60-80
80-110
160-260
Time
second
2-3
Free acid
mgKOH/g
≤0.5
≤0.5
≤0.5
≤0.5
≤0.5
≤0.5
≤0.5
≤0.5
2) Regular Low Viscosity PVB Resin
|
Indicator |
Unit |
SDL-28A |
SDL-18A |
SDL-08A |
SDL-04A |
SDL-05A |
SDL-06A |
|
Volatile content |
Wt-% |
≤2.0 |
≤2.0 |
≤2.0 |
≤2.0 |
≤2.0 |
≤2.0 |
|
Non volatile content |
Wt-% |
≥98.0 |
≥98.0 |
≥98.0 |
≥98.0 |
≥98.0 |
≥98.0 |
|
Butyral content |
Wt-% |
66-76 |
66-76 |
66-76 |
66-76 |
66-76 |
66-76 |
|
Acetate content |
Wt% |
≤3.0 |
≤3.0 |
≤3.0 |
≤3.0 |
≤3.0 |
≤3.0 |
|
Hydroxy content |
Wt% |
17-29 |
17-29 |
17-29 |
17-29 |
17-29 |
17-29 |
|
10% viscosity |
mpa.s |
9-14 |
14-20 |
20-30 |
30-55 |
35-60 |
80-110 |
|
Free acid |
mgKOH/g |
≤0.5 |
≤0.5 |
≤0.5 |
≤0.5 |
≤0.5 |
≤0.5 |
·Product appearance: Tiny, free-flowing white powder.
·PVB resin meet the following regulations regarding food contact plastic material:
1) The REGULATION (EC) No 1935/2004 – Article 3.1;
2) COMMISSION REGULATION (EU) No 10/2011 on plastic materials and articles intended to come into contact with food;
3) The United States food and drug administration’s 21 CFR § 175.105 adhesive, 21 CFR § 175.300 resin and polymer coating, 21 CFR § 176.170 paper composition and paper board contact with water and high fat food.
·Product’s main characteristics:
1. Low viscosity PVB resin that is suitable for flexo and gravure printing, has good adhesion to polyolefins, metal, cellulose acetate, polyester, cellophane paper, polyamide and polystyrene film;
2. Low viscosity PVB resin as the foundation of the printing ink shows a low solvent resistance, good liquidity, good waterproof, which could be independently used as the basic resin, and could be used together with alcohol soluble nitrocellulose, acetone condensation resin, alkyd resin, maleic resin and other natural polymer;
Suggested quantity added to: 18-30% for SDL-28/SDL-28B; 15-20% for SDL-18/SDL-18B; 10-15% for SDL-08/SDL-08B; 5-15% for SDL-04,05,06/SDL-04B,05B,06B;
3. Dissolve under normal temperature (25℃), the dissolution time is 30 minutes or less, this characteristic has greatly increased the ink’s solubility;
4. Low viscosity PVB resin has good wettability and pigment dispersion;
5. Non-toxic, tasteless, odorless, no aromatic element, no heavy metal, no plasticizer, is the first choice of resin for environment friendly printing ink.
High Butyral and Low Viscosity PVB Resin
Regular Low Viscosity PVB Resin
Alcohol
methyl alcohol
√
√
ethyl alcohol
√
√
propyl alcohol
√
√
butyl alcohol
√
√
isobutyl alcohol
√
√
diacetone alcohol
√
√
ketone alcohol
√
√
benzyl alcohol
√
√
Ethers
Dipropylene Glycol butyl ether
√
1,2-Propylene Glycol 1-Monomethyl Ether
√
√
Lipid
ethyl acetate
√
methyl ethyl ketone
√
3-Methoxybutyl acetate
√
DBE DIBASIC ESTER
√
Butyl glycolate
√
Ketone
acetone
√
butanone
√
methyl ethyl ketone
√
MIBK
√
cyclohexanone
√
√
