Agriculture Reference
In-Depth Information
Table 2.3 (continued)
Nano-content
Claim
a
Patent title
Ref
Montmorillonite Method for manufacturing
nanoscale compound fertil-
izers by using nanomaterial
and MgO-rich seawater
Cross-listed to Category
3 kaolin and Category 2 rare
earths
Zuo (
2007
)
Technical process for pro-
ducing clay nanoparticle-
polyester blended polymer
as binder for encapsulating
fertilizer
Nanoscale emulsions are
prepared by shearing aque-
ous dispersions of kaolin or
montmorillonite clay with
dodecylbenzenesulfonate
surfactants and are used to
encapsulate fertilizer. Cross-
listed to Category 3 poly-
mers and plastics
Zhang
et al. (
2003b
)
Organosilane-
coated magnetic
nanoparticles
Agrochemical microcap-
sules adapted to rupture in a
magnetic field
Microcapsules encapsulat-
ing agricultural chemicals
have organosilane-coated
magnetic nanoparticles
covalently bound inside
their shells. Application of a
magnetic field ruptures the
microcapsules, allowing for
controlled release
Boday
et al. (
2013
)
Palygorskite
(attapulgite)
Palygorskite material-based
sustained-release composite/
potash/phosphorus/nitrogen
fertilizer
A composite fertilizer, pot-
ash fertilizer, phosphate fer-
tilizer, or urea fertilizer that
is embedded in the nano-
scale pores of a palygorskite
clay yields a controlled-
release fertilizer
Cao
et al. (
2007a
,
b
,
c
,
d
)
Method for preparing
nanocomposite aquasorb
with function of slow-
release fertilizer
Cross-listed to Category
3 polymers and plastics and
to Category 2 polymer
nanoparticles
Wang and
Zhang (
2007
)
Controlled release of
low-cost environmentally
friendly nitrogenous
fertilizer
Urea held within the nano-
scale cavities of a
nanoporous attapulgite-
polyacrylamide conjugate
yields a fertilizer with
reduced nitrogen loss.
Cross-listed to Category
3 polymers and plastics
Cai (
2007
)
Polymers and
plastics
Production of sustained-/
controlled-release fertilizer
used for greenhouse tomato
NPK fertilizer covered with
a nanoscale thin film com-
posite of polyvinyl alcohol,
foam plastic, and a humic
acid cementing agent in the
form of nanoscale granules
yield a slow-release
fertilizer
Zhang
et al. (
2005a
)
(continued)
