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35results about How to "More hydrophilic" patented technology

Preparation method of hyper-branched polyether amide block silicone

The invention discloses a preparation method of hyper-branched polyether amide block silicone. The preparation method comprises the following steps: preparing polyether / epoxy block silicone oil and preparing hyper-branched polyether amide block silicone. According to the preparation method, hyper-branched polymers and linear polyether amino block silicone are combined together to develop a new silicone softening agent with a newly modified silicone chemical structure; the synthesized hyper-branched material has a reticular structure which not only strengthens cohesive force between fibers, but also strengthens cohesive force between yarns; the invention is high in molecular weight, low in viscosity, rich in hydrophilic groups and capable of endowing soft, well-rounded and washable touch on fabrics; the problem of easy demulsification of traditional amino-modified silicone oil is solved; the product has self-emulsifying performance in water and is good in emulsion stability; the hyper-branched polyether amide block silicone is reduced in yellowing performance and enhanced in hydrophilicity; fabrics made accordingly has good hydrophilicity and low yellowing performance; and the hyper-branched polyether amide block silicone combines with the fabrics in a form of chemical bonds, so that the wash resistances is enhanced and the soft effect of amino silicone oil is achieved.
Owner:南通曙光染织有限公司

Method for producing a medical device with a cross-linked hydrophilic coating

A time and cost effective production method for medical devices with a hydrophilic coating is provided, which ensures adequate adhesion to the substrate, as well as good water retention and low friction properties. Specifically, the method comprises the steps of: providing a substrate; applying, in one or more steps, a coating solution comprising a hydrophilic polymer to a surface of said substrate to form a non-cross-linked hydrophilic coating on said substrate; and irradiating the coated substrate, wherein said irradiation is adapted both to cross-link said hydrophilic coating and to simultaneously sterilize the medical device.Hereby, a non-cross linked hydrophilic coating is first obtained on the substrate, which coating is loosely connected to the substrate, and which is not fit for use as a catheter coating. However, after the step of irradiating the coated substrate, the hydrophilic coating becomes cross-linked, and fit for use e.g. on a urinary catheter. Further, since one and the same irradiation step is used to effect both cross-linking and sterilization, the production can be made more efficient, using fewer production steps and with a shortened production time.
Owner:ASTRA TECH SE

Borate-polyol mixtures as a buffering system

InactiveUS20060229219A1Big ratioHigh degree of complexationSenses disorderLens cleaning compositionsChemistryTonicity
A buffering system having a pKa which may be selected based on the environment in which the solution is designed to be used. Solutions containing the buffering system according to the present invention include borate-polyol complexes as the primary buffering agents, and may include one or more of the following: an aqueous liquid medium; an antimicrobial component; a surfactant component; a viscosity-inducing component; and / or a tonicity component. The borate-polyol buffering system may be formulated to have a lower pKa than traditional systems.
Owner:ADVANCED MEDICAL OPTICS

A kind of preparation method of hyperbranched polyether amino block silicone

The invention discloses a preparation method of hyper-branched polyether amide block silicone. The preparation method comprises the following steps: preparing polyether / epoxy block silicone oil and preparing hyper-branched polyether amide block silicone. According to the preparation method, hyper-branched polymers and linear polyether amino block silicone are combined together to develop a new silicone softening agent with a newly modified silicone chemical structure; the synthesized hyper-branched material has a reticular structure which not only strengthens cohesive force between fibers, but also strengthens cohesive force between yarns; the invention is high in molecular weight, low in viscosity, rich in hydrophilic groups and capable of endowing soft, well-rounded and washable touch on fabrics; the problem of easy demulsification of traditional amino-modified silicone oil is solved; the product has self-emulsifying performance in water and is good in emulsion stability; the hyper-branched polyether amide block silicone is reduced in yellowing performance and enhanced in hydrophilicity; fabrics made accordingly has good hydrophilicity and low yellowing performance; and the hyper-branched polyether amide block silicone combines with the fabrics in a form of chemical bonds, so that the wash resistances is enhanced and the soft effect of amino silicone oil is achieved.
Owner:南通曙光染织有限公司

A kind of preparation method of hyperbranched ternary copolymerization organosilicon

The invention discloses a preparation method of hyperbranched ternary polymerization organic silicon. The preparation method comprises the following steps: preparing allyl polyoxyethylene glycidyl ether; preparing epoxy-terminated polyether block siloxane; preparing polyether / epoxy block silicone oil; preparing hyperbranched ternary polymerization organic silicon. According to the preparation method, a hyperbranched polymer and linear polyether amino block organic silicon are bonded together to research a novel organic silicon softener with a novel modified organic silicon chemical structure, and a synthesized hyperbranched matter is capable of enhancing the cohesive force among fibers and endowing a fabric with soft, plump and washable hand feel, high in molecular mass and low in viscosity and has much hydrophilic groups; the problem that emulsion of traditional amino modified silicon oil is easily broken is solved, the product has self-emulsifying property in water and is good in emulsion stability; the yellowing property is reduced, and the hydrophily is enhanced; a processed fabric is good in hydrophily and low in yellowing property and is bonded with fabric by virtue of chemical bonds, so that the washability is improved, and the fabric has a flexible effect of amino silicon oil.
Owner:南通曙光染织有限公司
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