Zzakey Technologies Ltd.

Exotech Bio Solutions Ltd.

Polygreen Ltd

Exotech Bio Solution Ltd.

Mircea Bucevschi

Monica Colt

Itzhak Shalev

Shai Shahal

Zvi Meiri

Mendy Axlerad

Zwika Meiri

The present invention relates to polymeric soil conditioner Absorbency stability as a new water absorbing polymeric material and a process for the production of water absorbing materials consisting of a combination of synthetic polymers and biopolymers, with an improved high water absorbency at repeated watering, capable to reduce the effect of accumulation of salts in polymeric matrix as of multiple cycles of swelling-deswelling that occurs during all period of living of vegetable culture, by decreasing of crosslinking density of three dimensional network of the material caused by biochemical processes that developed in polymeric gels.

Polymeric composition for use as soil conditioner with improved water absorbency during watering of the agricultural crops

The invention describes a method for the production of a biodegradable superabsorbent composite polymer material, characterized by high absorbency under load. The invention also describes novel composite material made of styrene maleic acid copolymer preferably in salt form and a biopolymer, coated with biodegradable coating agents and crosslinked.

Process for the production of biodegradable superabsorbent polymer with high absorbency under load based on styrene maleic acid copolymers and biopolymer

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

Mircea Bucevschi