Coatings World - April 2012

phorus-containing compound, an anion of at least one phosphate or an anion of at least one phosphonate; and e) water.

Henkel patents pressure sensitive adhesive U.S. 8, 101,276 B2 Henkel Corporation has been granted a patent for a high impact resistant article comprised of a breakable substrate bonded to a flexible substrate, wherein the breakable substrate is bonded to the flexible substrate using a pressure sensitive adhesive prepared by combining a nonsilylated acrylic polymer and a silane-functional polymer, wherein the silane-functional polymer is a silane-terminated polyurethane prepared from polyoxyalkylene diol, polyoxyalkylene triol, polycaprolactone diol or polycaprolactone triols; and said silane-terminated polyurethane has a glass transition temperature of below - 20° C.

Sun Chemical patents solventless universal colorants U.S. 8, 105,428 B2

Sun Chemical Corporation has received a patent for a method of preparing a universal base composition comprised of dispersing a pigment in a resin that is soluble in both water and organic solvent and wherein the resin comprises both hydrophobic and hydrophilic monomers; the total weight of the hydrophobic and hydrophilic monomers is from approximately 40% to 60% of the total weight of the resin; and the weight ratio of hydrophobic monomers to hydrophilic monomers is from approximately 1/5 to 5, wherein the resin has an amine value of approximately 0 to 400 and a softening point of 20˚ to 120° C.

Evonik patents a method for
coating substrates
U.S. 8, 105,656 B2
Evonik Degussa GmbH has obtained a
patent for a method of coating a sub-
strate comprised of the steps of provid-
ing a substrate; applying a composition
to at least one side of the substrate, the
composition contains an inorganic com-
pound which contains at least one metal
and/or semimetal selected from the
group Sc, Y, Ti, Zr, Nb, V, Cr, Mo, W,
Mn, Fe, Co, B, Al, In, Tl, Si, Ge, Sn, Zn,
Pb, Sb, Bi or a mixture thereof and at
least one element selected from the
group Te, Se, S, O, Sb, As, P, N, C, Ga or
a mixture thereof; drying the composi-
tion applied in the second step; applying
at least one coating to the at least one
side of the substrate to which the com-
position was applied in the second step,
the coating contains a silane of the gen-
eral formula (Z1)Si(OR) 3, in which Z1
is R, OR or Gly (3-glycidyloxypropyl)
and R is an alkyl radical having from 1
to 18 carbon atoms, wherein all radicals
R are identical or different, oxide parti-
cles selected from the oxides of Ti, Si, Zr,
Al, Y, Sn, Zn, Ce or a mixture thereof, a
polymer, and an initiator, and drying the
coating applied in step, wherein the
polymer is at least one polymer selected
from the group consisting of a
polyamide, a polyester, an epoxy resin, a
melamine-formaldehyde condensate, a
urethane-polyol resin and a mixture
thereof. CW

Ideal Cures Pvt. Ltd. receives key US patent for sodium alginate-based aqueous film coating technology

Ideal Cures, a company specializing in film coating compositions on tablets, pellets and granules for the pharma, health and dietary supplement industry, has secured a US patent for an innovation, claimed as both cost-effective and non-toxic.

Ideal Cures Pvt. Ltd. founded and based in Mumbai, India has received US Patent Number 8, 123,849, relating to aqueous film coating composition based on sodium alginate for application in pharmaceutical and nutraceutical tablets, caplets, pellets and granules. Inventive composition provides elegant glossy prompt release coating, which does not retard release of active ingredient from the coated substrate. This is the first time an Indian pharmaceutical excipient manufacturing company has been granted US patent on ready-to-use film coating composition.

This raises Ideal Cures patent portfolio to 10 granted patents, which includes nine granted patents in India. Ideal Cures also own a variety of intellectual property for film coating composition in the pharmaceutical and nutraceutical industries for immediate and delayed release technologies.

The patent covers the technology of a coating composition comprising sodium alginate with 20 percent recon level, which will result in savings of up to 40 percent coating time for the pharmaceutical and nutraceutical industries as compared to compositions based on Hydroxy-Propyl-Methyl-Cellulose said the company.

The company further said the technology will provide an excellent opportunity to pharmaceutical and nutraceuticals industry players to get rid of organic solvents like IPA and methylene chloride, which are toxic to the environment and coating operators. This technology protects tablets from moisture, sunlight and other atmospheric conditions. The technology would also be a great help for those in the nutraceutical industry looking for use of Gras Status products in their formulation. Addition of colors in the composition will have an advantage of creating brand identification for the user as well as smoothness in the finish would be helpful for easy passage of tablets in esophagus more particularly for bigger tablets.

The company has also filed a patent application based on a sodium alginate for a programed timed release of active ingredients with predetermined lag period. This is useful to active ingredients, which are sensitive to acidic pH and degradation in stomach.