BVR-003A BUTVAR Products - Uses and Physical Properties

Butvar products
®
Uses and physical properties
Butvar ® products
Uses and physical properties
• Metal coatings—Butvar can improve coating uniformity,
minimize cratering, improve adhesion, and increase
coating toughness and flexibility. Butvar resin is approved
by the U.S. Food and Drug Administration for indirect
food additive uses, making it an excellent choice for drum
and can-lining applications.
Butvar resin was pioneered in the 1930s as the key
ingredient for automotive safety glass interlayers. It still
enjoys widespread use in automotive and architectural
applications for laminated safety glass. Polyvinyl butyral
resins are employed in a wide array of industrial and
commercial applications. These unique resins offer
impressive performance, as well as outstanding versatility.
Butvar® polyvinyl butyral resins have a combination of
properties that make them a key ingredient in a variety
of successful formulations. Some of these properties for
which Butvar is widely used are outstanding binding
efficiency, optical clarity, adhesion to a large number of
surfaces, and toughness combined with flexibility.
Wood finishes
• Protective wash coats and sealers—Butvar helps
provide good holdout, intercoat adhesion, moisture
resistance, flexibility, toughness, and impact resistance.
In addition, the wood substrate is protected against
discoloration when Butvar is used in the finish, including
color changes caused by light.
Some of the applications in which Butvar® is a vital
ingredient include:
•K
not sealers—polyvinyl butyral resins are excellent
barriers to bleeding of terpenaceous matter from knots,
heartwood, and rosin ducts.
Metal coatings
• Wash primers—anticorrosive primers that apply easier,
adhere better, and dry faster than other materials.
•S
urface coatings—Butvar enables good wetting of most
substrates while providing a reactive site for chemical
combination with thermosetting resins. Resulting films
may be air dried, baked, or cured at room temperature.
•S
urface coatings—Butvar enables good wetting of most
substrates while providing a reactive site for chemical
combination with thermosetting resins. Resulting films
may be air dried, baked, or cured at room temperature.
Unit
Test
method
B-72
B-74
B-76
B-79
B-90
B-98
°C
DSC-Tg
72–78
72–78
62–72
62–72
72–78
72–78
1000X
—
170–250
120–150
90–120
50–80
70–100
40–70
Solution visc 10% by wt
cP
—
1600–2500
800–1300
200–450
75–200
200–400
75–200
Hydroxyl content as
% polyvinyl alcohol
—
—
17.5–20.0
17.5–20.0
11.5–13.5
11.0–13.5
18.5–20.5
18.0–20.0
Acetate content as
% polyvinyl acetate
—
—
0–2.5
0–2.5
0–2.5
0–2.5
0–1.5
0–2.5
Butyral content as
% polyvinyl butyral
—
—
80
80
88
88
80
80
Property
Tg
MW
Water-based dispersions
Dipsersion formulation
RS-261
RS-3120
FP
BR
Plasticizer
Castor oil
Castor oil
Butyl ricinoleate
Butyl ricinoleate
Surfactant
Sodium sulfonate
Potassium oleate
Potassium oleate
Potassium oleate
Butvar B-72
Butvar B-72
Butvar B-72
Butvar B-72
Brookfield visc at 25°C (cP)
100–5000
100–1500
<150
500–1500
Total solids
40.0–43.0
50.0–53.0
>50.0
50.0–52.0
8.9
8.6
8.7
8.4
PVB polymer
Specifications
Density @ 25°C (lb/gal)
Adhesives
Water-based dispersions
• Structural adhesives—When combined with phenolic
laminating resins, Butvar gives the highest shear strength
values at temperatures up to 250°F. Other outstanding
properties of the PVB-phenolic system include high peel
strength at very low temperatures, excellent dielectric
properties, and exceptionally good creep resistance as
measured by the ability of the bond to carry sustained
loads for extended periods of time.
Eastman also offers a line of waterborne Butvar® dispersions,
which are used in a wide variety of applications. Some of
their key benefits are good adhesion to many surfaces,
toughness, and transparent coatings that can be used in
dipped, brushed, or spray applications.
•H
ot-melt adhesives—Butvar® makes an excellent base
for hot-melt adhesives even where difficult-to-bond
surfaces are involved. The many types of Butvar resins
allow the best match to individual applications.
Other applications
• Textile coatings—PVB resins can be compounded to
make fabrics both water and stain resistant without
noticeably affecting the appearance, feel, drape, and color
of the fabric. Almost any fairly tightly woven fabric with
a flat surface can be made both water and stain resistant
with a coating based on Butvar.
• E poxies and other thermosetting resins—Butvar resins
are compatible with many epoxy resins and can confer
such improvements on epoxy-based systems as increased
impact resistance and peel strength.
• E lectronics/ceramic tape casting—Butvar imparts
excellent green strength and flexibility to the ceramic
tape. The primary advantages of using Butvar resins are
their solubility in a wide range of solvents and uniform
adhesion to conductive metals.
Some of the unique applications in which Butvar®
dispersions are used include:
•T
emporary strippable coatings—Butvar dispersions
are easy to apply, noncorrosive, and easily removable.
They are excellent choices for paint masking, spray booth
coatings, and equipment protection.
•P
rotective coatings for leather, can, wire, packaging, and
paper applications.
extiles—PVB dispersions provide a “silk feel” for textiles
•T
while providing stain resistance.
arpet backing—PVB dispersions are replacing PVC in
•C
carpet backing for commercial applications, reducing odor
and off-gassing often associated with “sick buildings.”
eat belt restraints
•S
For additional information, including technical
specifications and sample formulas, visit
BUTVAR.COM.
Eastman Chemical Company
Corporate Headquarters
P.O. Box 431
Kingsport, TN 37662-5280 U.S.A.
Telephone:
U.S.A. and Canada, 800-EASTMAN (800-327-8626)
Other Locations, (1) 423-229-2000
Fax: (1) 423-229-1193
Eastman Chemical Latin America
9155 South Dadeland Blvd.
Suite 1116
Miami, FL 33156 U.S.A.
Telephone: (1) 305-671-2800
Fax: (1) 305-671-2805
Eastman Chemical B.V.
Fascinatio Boulevard 602-614
2909 VA Capelle aan den IJssel
The Netherlands
Telephone: (31) 10 2402 111
Fax: (31) 10 2402 100
Eastman (Shanghai) Chemical
Commercial Company, Ltd.
Building C, No. 399 Shengxia Road,
Pudong New District
201210, Shanghai, P.R. China
Telephone: (86) 21 6120-8700
Fax: (86) 21 5027-9229
Eastman Chemical Japan Ltd.
MetLife Aoyama Building 5F
2-11-16 Minami Aoyama
Minato-ku, Tokyo 107-0062 Japan
Telephone: (81) 3-3475-9510
Fax: (81) 3-3475-9515
Eastman Chemical Asia Pacific Pte. Ltd.
9 North Buona Vista Drive
#05-01 The Metropolis Tower 1
Singapore 138588
Telephone: (65) 6831-3100
Fax: (65) 6732-4930
www.eastman.com
Although the information and recommendations set forth herein are presented
in good faith, Eastman Chemical Company and its subsidiaries make no
representations or warranties as to the completeness or accuracy thereof.
You must make your own determination of their suitability and completeness
for your own use, for the protection of the environment, and for the health
and safety of your employees and purchasers of your products. Nothing
contained herein is to be construed as a recommendation to use any product,
process, equipment, or formulation in conflict with any patent, and we make
no representations or warranties, express or implied, that the use thereof will
not infringe any patent. NO REPRESENTATIONS OR WARRANTIES, EITHER
EXPRESS OR IMPLIED, OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
PURPOSE, OR OF ANY OTHER NATURE ARE MADE HEREUNDER WITH
RESPECT TO INFORMATION OR THE PRODUCT TO WHICH INFORMATION
REFERS AND NOTHING HEREIN WAIVES ANY OF THE SELLER’S CONDITIONS
OF SALE.
Safety Data Sheets providing safety precautions that should be observed when
handling and storing our products are available online or by request. You
should obtain and review available material safety information before handling
our products. If any materials mentioned are not our products, appropriate
industrial hygiene and other safety precautions recommended by their
manufacturers should be observed.
© 2014 Eastman Chemical Company. Eastman and The results of insight are
trademarks of Eastman Chemical Company. Butvar is a trademark of Solutia
Inc., a subsidiary of Eastman Chemical Company. As used herein, ® denotes
registered trademark status in the U.S. only.
BVR-003A
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