A bio-based fire retardant derived from polyacrylamide grafted starch and use thereof. This disclosure relates to the field of polymer additives for improving fire safety of materials. Specifically, the present disclosure is bio-based material derived from polyacrylamide grafted starch as fire retardants to polymers. Moreover, the disclosure relates to their uses in the fields of coating, adhesive, etc.

The present invention is directed to new graft polymer of a hyaluronic acid polymer and N-isopropylacrylamide based polymer, preparations, compositions and uses thereof. In particular, the invention relates to pH and/or thermo-sensitive compositions able to form spontaneously nanoparticles useful as active and agents and delivery systems for at least one bioactive agent.

The present invention is directed to new graft polymer of a hyaluronic acid polymer and N-isopropylacrylamide based polymer, preparations, compositions and uses thereof. In particular, the invention relates to pH and/or thermo-sensitive compositions able to form spontaneously nanoparticles useful as active and agents and delivery systems for at least one bioactive agent.

The present invention discloses a composition comprising superabsorbent polymers in the form of flowable suspension that aid in seed treatment as well as soil quality improvement. The present invention further discloses process of preparing the composition for agriculture and a method of improving seed and soil health using the composite system.

The present invention discloses a composition comprising superabsorbent polymers in the form of flowable suspension that aid in seed treatment as well as soil quality improvement. The present invention further discloses process of preparing the composition for agriculture and a method of improving seed and soil health using the composite system.

The present invention provides a polymeric material composition comprising: (a) at least one superabsorbent polymer; and (b) 0.1% w/w to 2% w/w microporous silicon dioxide; wherein polymeric material composition exhibits non-hygroscopic characteristics with moisture content less than 15% w/w of the total weight of the polymeric material composition at room temperature. The present invention further provides process of preparing said polymeric composition and method of its application.

The present invention provides a polymeric material composition comprising: (a) at least one superabsorbent polymer; and (b) 0.1% w/w to 2% w/w microporous silicon dioxide; wherein polymeric material composition exhibits non-hygroscopic characteristics with moisture content less than 15% w/w of the total weight of the polymeric material composition at room temperature. The present invention further provides process of preparing said polymeric composition and method of its application.

Method for producing surface-modified biofibers includes: obtaining a hydrophilic block (A) made of a first polymer and arranged on surfaces of biofibers by conducting a living radical polymerization of a first monomer in a solution containing the biofibers, the first monomer, and a solvent, and allowing the first polymer to be attached to the surfaces of the biofibers; and obtaining a hydrophobic block (B) made of a second polymer and stacked outside of the hydrophilic block (A) by adding a second monomer to the solution after obtaining the hydrophilic block, conducting a living radical polymerization of the second monomer, and polymerizing the second polymer onto growing ends of the first polymer. The biofibers, polymers, and solvent have surface free energies satisfying:

E.sub.BF>E.sub.A>E.sub.B>E.sub.S(1)

[E.sub.BF represents the surface free energy of the biofibers, E.sub.A that of the first polymer, E.sub.B that of the second polymer, and E.sub.S that of the solvent].

Method for producing surface-modified biofibers includes: obtaining a hydrophilic block (A) made of a first polymer and arranged on surfaces of biofibers by conducting a living radical polymerization of a first monomer in a solution containing the biofibers, the first monomer, and a solvent, and allowing the first polymer to be attached to the surfaces of the biofibers; and obtaining a hydrophobic block (B) made of a second polymer and stacked outside of the hydrophilic block (A) by adding a second monomer to the solution after obtaining the hydrophilic block, conducting a living radical polymerization of the second monomer, and polymerizing the second polymer onto growing ends of the first polymer. The biofibers, polymers, and solvent have surface free energies satisfying:

E.sub.BF>E.sub.A>E.sub.B>E.sub.S(1)

[E.sub.BF represents the surface free energy of the biofibers, E.sub.A that of the first polymer, E.sub.B that of the second polymer, and E.sub.S that of the solvent].

Method for producing surface-modified biofibers includes: obtaining a hydrophilic block (A) made of a first polymer and arranged on surfaces of biofibers by conducting a living radical polymerization of a first monomer in a solution containing the biofibers, the first monomer, and a solvent, and allowing the first polymer to be attached to the surfaces of the biofibers; and obtaining a hydrophobic block (B) made of a second polymer and stacked outside of the hydrophilic block (A) by adding a second monomer to the solution after obtaining the hydrophilic block, conducting a living radical polymerization of the second monomer, and polymerizing the second polymer onto growing ends of the first polymer. The biofibers, polymers, and solvent have surface free energies satisfying:

E.sub.BF>E.sub.A>E.sub.B>E.sub.S(1)

[E.sub.BF represents the surface free energy of the biofibers, E.sub.A that of the first polymer, E.sub.B that of the second polymer, and E.sub.S that of the solvent].