摘要:
Methods and systems for treating cotton yarn are provided. Cotton yarn is partially dissolved by applying a cold aqueous alkaline solvent, rinsing the partially dissolved cotton yarn in water and drying the cotton yarn. Temperature of the solvent and time of exposure to the solvent greatly affect the improved mechanical properties of the cotton yarn.
摘要:
An aqueous alkali-surfactant solution having a hydroxide molarity of from 2 to 9 M that comprises alkali and a surfactant having a boron-centered head group positioned terminally in a linear or branched aliphatic or aryl hydrocarbon chain comprising from 4 to 10 carbon atoms. The boron-centered head group can be selected from boronic acids and their derivatives. Boronic acid alkali-surfactant treatment processes, such as cleaning, chemical pulping, mercerization, metal processing, leather processing, food processing, and personal beauty care. The process comprises the step of contacting a substrate with an effective amount of an aqueous boronic acid alkali-surfactant composition.
摘要:
Described herein is a continuous process for modifying the properties of polyester and polyester based fibers, such as a poly(butylene terephthalate) (PBT) fiber, comprising subjecting the PBT fiber to alkaline hydrolysis, and optionally further comprising functionalizing the PBT fiber by solution grafting such as fluorination. The alkaline hydrolysis and optionally subsequent functionalization such as fluorination process can be continuous, following the melt blowing/spinning or spun-bonding process. Also described is a nonwoven PBT fiber mat obtained by the surface modification process. Further described is a filtration device comprising the nonwoven PBT fiber mat.
摘要:
A chemically modified cellulosic fibre or filament having a moisture content of at least 7% by weight obtained by a process comprising the steps of (i) obtaining cellulosic fibres or filament and chemically modifying the cellulose by substitution to increase its absorbency; (ii) washing the fibres after step (i) in a mixture comprising water and up to 99% by weight of water-miscible organic solvent; (iii) drying the fibres to a moisture content of at least 7% by weight, tart abstract here
摘要:
The invention relates to methods, peptides, nucleic acids and cells for use in isolating and expanding human T cell populations in an antigen-specific manner for immunodiagnostic or therapeutic purposes. The invention also relates to professional antigen presenting cells derived from pluripotent human stem cells, and to customizable antigen presentation by the antigen presenting cells.
摘要:
Flameproof fibres based on cross-linked polyacrylate which can be obtained by cross- linking acrylic fibre which has optionally been previously dyed, alkaline hydrolysis of the cross-linked fibre, acid treatment of the fibre subjected to hydrolysis and optionally salification with a metal salt, characterised in that it comprises nanofillers or nanoparticles (having at least one nanometric dimension (
摘要:
The invention relates to a method of treating a fabric. It particularly relates to a method of treating a fabric with a rinse product that reduce soil pickup and further ensures that the fabric is cleaner after the subsequent wash. It is thus, an object of the present invention to provide a method of treating a fabric to render the fabrics relatively more hydrophobic and especially to provide a method of treating a fabric during the rinse stage of the fabric cleaning process that reduces subsequent soiling of the fabric during use by the consumer. It has been found that contacting the fabric with a neutral aqueous solution, comprising a water- soluble zinc compound, a deposition aid selected from the group consisting of an amine compound or an amino acid and a soap before drying said fabric, provides the soil repellence to the fabric.