Zzakey Technologies Ltd.

Exotech Bio Solutions Ltd.

Exotech Bio Solution Ltd.

Monica Colt

Mircea Bucevschi

Itzhak Shalev

Mendy Axlerad

This invention relates to a formulation material and its method useful in forestry firefighting, the formulation material comprising: (a) an anhydride copolymer having a structural formula wherein a functional group X of said formula is at least one alkyl group selected from the family consisting of methyl, ethyl, and propyl groups! and (b) at least 0.1%, by weight, of at least one cross-linking agent for said anhydride copolymer, said agent selected from the group of cross-linking agents consisting of a biopolymer and a tannin, wherein a weight ratio of said anhydride copolymer to said cross-linking agent is at least 2:1, and wherein a total weight of said anhydride copolymer and said cross-linking agent, within the formulation, is at least 25% on an anhydrous basis.

Biodegradable fire-fighting formulation

A biocompatible, biodegradable, macromolecular water-absorbent hybrid material (WAHM), having a three-dimensional configuration with intermolecular covalent bonds and containing free functional groups, said polymer being formed by polymer-polymer intercoupling reaction between a natural water-soluble polymer A or its derivatives having a molecular weight between 20,000 and 300,000 Da, and a synthetic polymer B in an adequate ratio wherein the natural polymer A is selected from amphoteric reactants, partially denatured or chemically modified natural polymer, that dissociates in water to form both anions and cations, and which can undergo polymer-polymer intercoupling reactions, and wherein synthetic polymer B s a linear or branched reactive synthetic copolymer having a molecular weight of 50,000-500,000 Da derived from a vinyl monomer and an ethylenically unsaturated monomer, having a backbone with polymeric subunits covalently bonded to the polymer backbone, the subunits comprising ones with non-reactive and others with reactive chemical functional groups.

Biocompatible, biodegradable, water-absorbent hybrid material

The present invention discloses styrene-maleic anhydride copolymers preparations using solventless techniques. The solventless method resulted in reduced amounts of residues, such as unreacted styrene and/or maleic anhydride monomers, which makes the copolymers particularly suitable for bioapplications.

Styrene-maleic anhydride copolymers for bioapplications and their preparation

A bio-compatible, biodegradable macromolecular water-absorbent polymeric material having a three-dimensional configuration with intermolecular covalent bonds and containing free functional groups selected from OH, SH, NH , and COOH. The polymer is formed by polymer-polymer inter-coupling interaction between a natural water-soluble polymer A or its derivatives having a molecular weight between 20,000 and 500,000 Da, and a synthetic polymer B in a ratio of A:B of 15:85 to 85:15. The natural polymer A can be selected from&mdash;a non-ionic natural, partially denatured or chemically modified polymer that does not dissociate in water and which can undergo polymer-polymer intercoupling reactions, or an anionic natural, partially denatured or chemically modified polymer, that dissociates in water to form anions and which can undergo polymer-polymer intercoupling reactions, &mdash;or a cationic natural, partially denatured or chemically modified polymer, that dissociates in water to form cations and which can undergo polymer-polymer intercoupling reactions or an amphoteric natural, partially denatured or chemically modified polymer, that dissociates in water to form both anions and cations and which can undergo polymer-polymer intercoupling reactions, or mixtures thereof.

Growing community of inventors

Rehovot, Israel

Monica Colt