Abstract:
The method for obtaining adhesive from protein waste, especially leather waste from the tanning, meat and fish processing industries in the form of hydrolyzed proteins obtained through alkaline or acidic or enzymatic or thermal hydrolysis. Hydrolyzates are subjected to polycondensation reaction with application of aldehydes and aliphatic or aromatic amines and it is mixed with modifying and improvement additions. Aldehyde, favourably formaldehyde in the quantity from 2:1 to 5:1 in relation to dry matter of hydrolyzate is introduced gradually to hydrolyzed protein water solution, favourably collagen hydrolyzate. Condensation reaction is carried out, favourably in alkaline environment, gradually dosing urea into the solution in the quantity from 1:1 to 3:1 in relation to dry matter of hydrolyzate for the period of 1 hour to 5 hours in temperature from 45°C to 75°C, favourably 70°C. Simultaneously, it is mixed and salt content from 1 % to 3 % by weight of dry matter of hydrolyzate is supplemented. Next, the reaction mixture is evaporated, after the modifying and biocidal additions are introduced into the concentrated solution and after mixing a homogeneous solution of protein adhesive is obtained.
Abstract:
Starch-based fibers, compositions comprising same, method of preparing said starch-based fibers, kits and methods for use of said starch-based fibers including but not limited to oral delivery of cells (e.g., probiotic microorganisms) and/or molecules of interest (e.g., nutrients) are provided.
Abstract:
Disclosed herein is a multilayered article comprising a first layer comprising a thermoplastic polymer; where the thermoplastic polymer comprises polyolefin, a compatibilizer and thermoplastic starch; where the first layer does not contain any filler; and a second layer comprising a polyolefin and a filler; where the second layer does not contain any thermoplastic starch. Disclosed herein too is a method of manufacturing a multilayered article comprising coextruding a first layer and a second layer; where the first layer comprises a polyolefin, a compatibilizer and thermoplastic starch and does not contain any filler; where the second layer comprises a polyolefin and a filler and does not contain any thermoplastic starch; and where the first layer contacts the second layer.
Abstract:
The present document describes a powder composition comprising a functionalized starch having a single helix V-structure and having a degree of substitution of at least 0.25, and a bioactive agent, forming an inclusion complex with said functionalized starch, where the bioactive agent is within the helix V-structure of the functionalized starch having a single helix V-structure. Also described are the functionalized starch having a single helix V-structure and having a degree of substitution of at least 0.25, methods of making the same and methods of using the same to manufacture the powder composition.
Abstract:
The adhesive compositions that include starch derivatives, plasticizers, optionally cellulose derivatives, and optionally other additives. By tailoring the composition and concentration of these components, hot melt adhesive compositions, hot melt pressure sensitive adhesive compositions, and pressure sensitive adhesives have been produced. Further, these adhesive compositions may be useful in articles including diapers, laminates, repositionable advertisements, and many more.
Abstract:
Die vorliegende Erfindung beschreibt eine Zusammensetzung, umfassend a) ein erstes Stärkederivat ausgewählt aus der Gruppe bestehend aus Hydroxyalkylstärke, Carboxyalkylstärke, Esterstärke und beliebige Mischungen hiervon, wobei das Stärkederivat ein mittleres Molekulargewicht Mw1 und einen molaren Substitutionsgrad MS1 aufweist und b) ein zweites Stärkederivat ausgewählt aus der Gruppe bestehend aus Hydroxyalkylstärke, Carboxyalkylstärke, Esterstärke und beliebige Mischungen hiervon, mit einem mittleren Molekulargewicht Mw2 und einem molaren Substitutionsgrad MS2, dadurch gekennzeichnet, dass Mw1 größer als Mw2 (Mw1 > Mw2) und MS2 größer als MS1 (MS2 > MS1)ist.
Abstract:
A lipophilic starch is provided along with methods of making the same. The starch is prepared by modifying the starch with an organic acid anhydride reagent, such as octenyl succinic anhydride, drying the modified starch to a moisture content of less than 15% by weight, and then heat treating the dried starch at a temperature of at least 100°C for at least one minute.
Abstract:
The present invention relates to a composition for making a biodegradable polymer comprising: a thermoplastic starch (TPS) that is grafted, or compounded for being grafted, to an aliphatic-aromatic copolyester, said aliphatic-aromatic co-polyester being present in a continuous phase in amounts sufficient to disperse said TPS therein; a biodegradable polyester in the continuous phase; and a chain extender having epoxy functionality capable of reacting with the end groups of said TPS and biodegradable polyester to introduce chain extension therein and form a TPS-polyester co-polymer. The invention is also directed to a process of making the same composition and to a biodegradable film made in accordance with the process.
Abstract:
The invention relates to a thermoplastic and/or elastomer composition that comprises: at least 50 wt % and 99.95 wt % at most of a starchy composition (a) including at least one starch; at least 0.05 wt % and 50 wt % at most of a nanometric product (b) including particles having at least one dimension of 0.1 to 500 nanometers and selected from mixed products containing at least one lamellar clay and at least one cationic oligomer or cationic synthetic polymer, organic, mineral or mixed nanotubes, organic, mineral or mixed nanocrystals and nanocrystallites, organic, mineral or mixed nanobeads and nanospheres customised into clusters or agglomerated, and mixtures of these nanometric products, the percentage being expressed in dry weight and added to the sum in dry weight of (a) and (b); and at least one non-starchy polymer (c).
Abstract:
It is intended to provide a technique for making a biomass-origin dispersion phase of a polymer composite material, wherein the dispersion phase is formed in a synthetic polymer matrix, highly microscopic and homogeneous. An apparatus (10) for producing a polymer composite material characterized by comprising: a cylinder (13) in which a supply area (A) for supplying the main component of the synthetic polymer as described above and an excessive water-containing component originating in a biomass as described above is provided in the upstream side while a discharge unit (17) is provided in the downstream side; a screw (15) which axially rotates within the cylinder (13), which has been set to a kneading temperature (Tz) at which the synthetic polymer melts, and extrudes the kneaded matter comprising the main component and the excessive water-containing matter as described above toward the discharge unit (17); and a dehydration unit (40) by which the water contained in the kneaded matter is removed under setting pressures (Pa, Pb, Pc) being lower than the saturated vapor pressure (Pz) at the kneading temperature (Tz) employed in the cylinder (13) but higher than atmospheric pressure.