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2042 results about "Biopolymer" patented technology

Biopolymers are polymers produced by living organisms; in other words, they are polymeric biomolecules. Biopolymers contain monomeric units that are covalently bonded to form larger structures. There are three main classes of biopolymers, classified according to the monomeric units used and the structure of the biopolymer formed: polynucleotides (RNA and DNA), which are long polymers composed of 13 or more nucleotide monomers; polypeptides, which are short polymers of amino acids; and polysaccharides, which are often linear bonded polymeric carbohydrate structures. Other examples of biopolymers include rubber, suberin, melanin and lignin.

Biodegradable polymer films and sheets suitable for use as laminate coatings as well as wraps and other packaging materials

Biodegradable polymer blends suitable for laminate coatings, wraps and other packaging materials manufactured from at least one "hard" biopolymer and at least one "soft" biopolymer. "Hard" biopolymers tend to be more brittle and rigid and typically have a glass transition temperature greater than about 10° C. "Soft" biopolymers tend to be more flexible and pliable and typically have a glass transition temperature less than about 0° C. While hard and soft polymers each possess certain intrinsic benefits, certain blends of hard and soft polymers have been discovered which possess synergistic properties superior to those of either hard or soft polymers by themselves. Biodegradable polymers include polyesters, polyesteramides and thermoplastically processable starch. The polymer blends may optionally include an inorganic filler. Films and sheets made from the polymer blends may be textured so as to increase the bulk hand feel. Wraps will typically be manufactured so as to have good "dead-fold" properties so as to remain in a wrapped position and not spring back to an "unwrapped" and planar form. Laminate films will typically have good water vapor barrier properties as measured by the their Water Vapor Permeability Coefficient (WVPC).

Biopolymer nano tunica fibrosa material capable of being biological degraded and absorbed, preparing method and uses of the same

The invention relates to compound millimicron fibrous membrane material of cellulose and cellulose matrix which can perform the biological degradation and the biological absorption and a preparation method thereof and an industry and medical purpose, and belongs to the biological macro-molecule non woven fabric material field which can perform the biological degradation and the biological absorption. Electrostatic spinning equipment is used to obtain the fibrous membrane material which can perform the biological degradation and the biological absorption, the weight of the cellulose is taken as basic reference, the component of the material comprises cellulose more than 0 and less than or equal to 100 weight parts, other biomacromolecule more than and equal to 0 and less than 100 weight parts, 0 to 10 weight parts of curative drug or 0 to 50 weight parts of inorganic catalyzer and / or 0 to 50 weight parts of inorganic strengthening agent. The material of the invention has good biological compatibility, biological degradation property and degradation absorptivity, and can be used for haemostasia material, wound cladding material, organization engineering supporting rack material, the transportation and release of medicine, artificial skin and blood vessel, and postoperation anti blocking material, beauty material and catalyzer carrier, filtering membrane and radiation protection material and so on.
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