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A Moisture Curable Silicon Modified Polyether
-- What is EXCESTAR?
EXCESTAR(ES-S series) is a base polymer for Modified Silicon
Sealant which is one of the most popular construction sealants in
Japan. EXCESTAR has been widely used by sealant makers for
residential and commercial buildings.
Recently, the applications of EXCESTAR have spread to not only
construction sealant use area but also the elastic adhesive
sector.
--
Characteristics
EXCESTAR is an outstanding moisture curable polyether having
hydrolyzable silyl groups at the end group. It was developed by
Asahi Glass based on the technologies of ultra high molecular
weight polyether polyol (PREMINOL). EXCESTAR can be cured by
moisture in the presence of a catalyst and gives an elastmer
finish having compatible properties for sealants and adhesives.
Since PREMINOL has an excellent low by-product and narrow
molecular weight distribution property, EXCESTAR based on
PREMINOL has the following excellent characteristics compared
with conventional polymers.
- Easy to obtain polymers having various properties
===> Easy to
adjust properties of cured resin
- Excellent properties of cured polymer
===> High strength
and High Elongation
- Excellent curing properties
===> Fast surface
and inside cure
- Excellent durability and weatherability
===> Especially
excellent heat resistance
Advantages of EXCESTAR
Narrow Molecular Weight
Distribution
Excellent Curability
High Strength, High Elongation
Low Viscosity
Multi-Functional Polymer
High Modules Polymer
Low Viscosity
Contents
--
Applications
- Construction Sealants
- Other Sealants
- Elastic Adhesives
- Coatings
-- Product Line-up
| |
Appearance |
Viscosity
(mPa's at 25C.) |
Applications |
| ES-S2410 |
Light Yellowish
Liquid |
11,000-20,000 |
Low Modulus |
| ES-S2420 |
ditto |
12,000-23,000 |
Medium Modulus |
| ES-S3430 |
ditto |
6,000-13,000 |
High Modulus |
| ES-S3630 |
ditto |
14,000-23,000 |
High Modulus Medium
Elongation |
Contents
-- Typical Properties of
Cured Polymer
| ES-S series can be cured by moisture that results in
a flexible elastic cured polymer. |
| |
50% Modulus
(N/cm2) |
Tensile Strength
(N/cm2) |
Elongation
(%) |
| ES-S24101) |
8 - 15 |
30 - 80 |
300-500 |
| ES-S24201) |
15 - 25 |
40 - 90 |
200-400 |
| ES-S34301) |
25 - 35 |
30 - 80 |
100-300 |
| ES-S36301) |
13 - 17 |
30 - 70 |
200-400 |
| 1) Properties of 2mm sheet cured by DBTDL catalyst |
-- Durability of Cured
polymer
| ES-S series have Excellent heat resistance and water
resistance. |
| |
ES-S2410 |
ES-S2420 |
Initial Properties1)
50% Modulus (N/cm2)
Tensile Strength (N/cm2)
Elongation(%) |
11
50
390 |
20
62
320 |
Heat Aging2)
50% Modulus (N/cm2)
Tensile Strength (N/cm2)
Elongation(%) |
12
51
440 |
19
61
310 |
Immersion in Hot Water3)
50% Modulus (N/cm2)
Tensile Strength (N/cm2)
Elongation(%) |
9
50
470 |
15
54
350 |
1) Properties of a 2mm sheet cured by DBTDL catalyst
2) Heat aging: 100C. *7 days
3) Immersion in hot water: 50C. *7 days
|
Precautions before and during
handling
| Before use of this product, we urge the careful
reading of the appropriate Material Safety Data Sheet (MSDS).
Technical information brochures are available for some
products. For the safe use of the product, one must abide
by the use method and the purposes described in the
relevant brochure and MSDS. Please note that the brochure
and MSDS are based on the latest information and data
available, but additional and/or corrections may be made,
from time to time, without notice when new data becomes
available and/or regulations are changed. Feel free to
contact us directly
and/or the selling agency if you have any questions. |
ExceStar Top
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