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General
- Alkyl
acrylates are clear, volatile liquid; slightly soluble in water and
complete soluble in alcohols, ethers and almost organic solvents.
- Acrylate
esters containing a double bond and functional carboxyl group are
used chiefly as a monomer or co-monomer in making acrylic and
modacrylic fibres.
- Butyl acrylate
is a clear, flammable liquid with a fruity, pungent odor.
- Butyl acrylate
is used in the preparation of polymers and copolymers with acrylic
acid and its derivatives, methyl acrylate, vinyl chloride,
butadiene, styrene
- Butyl acrylate
is a skin, ocular, and respiratory tract irritant in animals. It can
cause skin sensitization.
Process
- Butyl acrylate
is made from ester grade acrylic acid and a small excess of butanol
in a reactor bed at elevated temperature extracted at a yield of
about 94-97%. It is usually integrated to an acrylic acid facility
- Emulsion graft
polymerization of styrene and acrylonitrile onto the copolymer of
butyl acrylate was initiated by peroxy bonds in the D120 units of
the backbone chains at 120°C.
- The processes
to prepare graft copolymers has been investigated intensively
including radical graft copolymerization, which can be performed by
using special initiators, chain transfer reaction, radiation
polymerization, light polymerization, and mechanics.
- Poly(butyl
acrylate-co-styrene)–silver nanocomposites were prepared by
g-irradiation of microemulsions and metallic silver nanoparticles of
near uniform size were found to be well dispersed in the polymer
matrix.
- Living
polymerization is considered to offer the best techniques for the
preparation of polymers with controlled molecular weights and
polydispersities. These processes enable chemists to synthesize
polymers with predictable molecular weights and block copolymers
with high blocking efficiency.
Technology
-
N-vinyl-2-pyrrolidone/butyl acrylate (V/B) copolymers have important
applications in the photography, lithography, adhesive and
pharmaceutical industries.
- It has been
pointed out that the copolymerization reactions provide an excellent
way for the preparation of macromolecules with the specific chemical
structures and for the control of properties such as solubility,
polarity and hydrophilic/hydrophobic balances.
- High
resolution NMR spectroscopy has proven to be one of the most
efficient and reliable technique for the determination of
microstructure of N-vinyl-2-pyrrolidone/butyl acrylate copolymers.
- The
copolymerisation of styrene and butyl-acrylate monomer was carried
out using conventional emulsion polymerisation.
Applications
- Copolymers
have acquired prime importance in various avenues of application in
leather, textile and building materials.
- It is used in
formulating paints and dispersions for paints, inks, and adhesives.
- It is used in
making cleaning products, antioxidant agents, amphoteric
surfactants. It is used in making aqueous resins and dispersions for
textiles and papers.
- Butyl acrylate
is also a very useful feedstock for chemical syntheses, because it
readily undergoes addition reactions with a wide variety of organic
and inorganic compounds.
Market
and Report
- A number of
factors drive demand for acrylates. Typically, acrylate trends align
with the economy; as the economy improves, so does demand for
acrylate products.
- The acrylates
market is expected to grow at or above 4 percent per year.
- The US is the
largest consumer at about 429,970 tonnes/year, followed by Western
Europe at 412,630, Asia-Pacific at 365,960 tonnes/year.
- 5%/year in
Africa, 6%/year in Asia and the Middle East, 4%/year in Australia,
New Zealand and eastern Europe, 3%/year in Americas and western
Europe, and 1%/year in Japan.
- Styrene (St)
and butyl-acrylate (BA) monomers of a pure reagent grade were
obtained from a reputed company in USA and used directly without
further purification.
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