39results about How to "Easily redispersible" patented technology

The present invention relates to one kind of nano conducting silver paste and its preparation, and aims at solving the problems of conducting paste with higher conducting stuffing content, high colloid viscosity and unsuitability in connecting through holes in multi-layer circuit board. According to the self-assembling and low temperature welding features of the nano silver particles, the presentinvention prepares nano silver powder via microemulsion process and low-content conducting nano silver particle paste with epoxy resin stuffing component. The paste has high conductivity, low colloidviscosity and thus wide application foreground in fixing electronic elements onto circuit board, connecting electrodes and especially connecting through holes in multi-layer circuit board.

The invention relates to the use of an aqueous coating composition, comprising a film forming binder system, containing at least one crosslinkable resin and optionally at least one crosslinking agent, and spherical particles comprising a polyalkylsiloxane having R—SiO_3/2 groups (e.g. silsesquioxane) for the manufacture of surface coatings of seals, a process for the manufacture of coated seals, and the coated seals obtained by such process.

The liquid ejection apparatus comprises: a liquid ejection head which has nozzles ejecting liquid in a downward-facing state and pressure chambers connected to the nozzles; a turning device which turns the liquid ejection head to switch the nozzles of the liquid ejection head between the downward-facing state and an upward-facing state; and a sealing device which seals the nozzles when the nozzles of the liquid ejection head are in the upward-facing state.

Provided herein are methods for treating, preventing or alleviating the symptoms of and inflammation associated with inflammatory diseases and conditions of the gastrointestinal tract, for example, those involving the esophagus. Also provided herein are pharmaceutical compositions useful for the methods of the present invention.

The invention relates to a method for manufacturing cellulose material, the method comprising introducing cellulose fibers as raw material pulp (1) to a system, adding an alkalizing agent into the system in order to absorb the alkalizing agent into the cellulose fibers (1), adding an anionic agent into the system in order to absorb said agent into the cellulose 2, 2a, 2b fibers (1), feeding the cellulose fibers (1) to a sieve plate press (6), performing a reaction between the cellulose fibers and the anionic agent at least partly in the sieve plate press (6) in order to produce anionized cellulose fibers having a degree of substitution between 0.05 and 0.35, wherein the reaction is performed at least partly at a consistency of at least 50%. In addition, the invention relates to a system for manufacturing cellulose material and to fibril cellulose produced from anionized cellulose fibers.

A water-in-silicone oil emulsion contains (i) in the range from 0.1 to 25% by weight of particles of metal oxide having a median particle volume diameter in dispersion in the range from 18 to 32 nm, (ii) 5 to 60% by weight of silicone oil, and (iii) greater than 20% by weight of water. The metal oxide particles are preferably incorporated into the emulsion in the form of an aqueous dispersion. The emulsion exhibits good skin feel, effective UV protection, stability and improved transparency.

The present invention relates to a colloidal metal solution comprising colloidal metal particles with a sulfur compound of low molecular weight such as mercaptoacetic acid, mercaptopropionic acid, mercaptoethanol, etc. as a protective colloid on the particle surfaces and having a pH of 8-14. According to the present invention, a colloidal metal solution having a high concentration and a distinguished dispersion stability with a small amount of the protective colloid can be provided with a commercially and economically high advantage without any operation such as centrifuge, etc.

The invention discloses a cosmetic grade water-based pigment composite dispersant and a production method thereof and a liquid pen using the composite dispersant. The cosmetic grade water-based pigment composite dispersant is prepared from magnesium aluminum silicate, deionized water and an amino acrylic acid (ester) copolymers. The cosmetic grade water-based pigment composite dispersant is non-toxic and non-irritating, has good economic benefits, can be used as an excellent suspending agent, can improve the effectiveness of the amino acrylic acid (ester) copolymers, can be used as a modifierand thickener for viscosity to obtain an excellent suspension effect in a lower viscosity range, and has a wide range of PH range stability.

The present invention relates to novel particles comprising polyelectrolyte polymers which are transporters of active principle (AP), in particular protein and peptide active principle, and to novel modified-release pharmaceutical formulations comprising said AP microparticles.

These novel particles loaded with AP release the AP over a prolonged period of time of several days, or even several weeks.

The invention relates, in a first aspect, to particles comprising:

• • a) a first polyelectrolyte polymer (PE1) in a charged state, carrying side hydrophobic groups (GH), wherein said first polyelectrolyte polymer (PE1) can spontaneously form, in water, a colloidal solution of particles at least one pHm value of the pH of between 3 and 8;
  • b) a second polyelectrolyte polymer (PE2) of opposite polarity to the first polyelectrolyte polymer (PE1), wherein said second polyelectrolyte polymer (PE2) forms, in water, a solution or a colloidal solution at said pHm value of the pH; and
  • c) at least one active principle (AP) associated noncovalently with the particles of the colloidal solution of the first polyelectrolyte polymer (PE1);

wherein said particles are obtained by mixing, at a pH equal to pHm, the first polyelectrolyte polymer (PE1), in the form of a colloidal solution of particles associated with the active principle (AP), with the second polyelectrolyte polymer (PE2), in the form of a solution or colloidal solution.

The invention also relates to the process for the preparation of these particles, to a pharmaceutical formulation comprising such particles and to a process for the preparation of medicaments.

The invention belongs to the technical field of medicament preparations and relates to a cross-linked food protein stabilized nanometer medicament delivery system capable of being 'solidified' directly. The medicament delivery system is prepared from food protein, an oil phase, a cross-linking agent and water by adopting the steps of modifying the protein, adding the oil phase containing the cross-linking agent, dispersing at high speed, homogenizing at high pressure, and 'solidifying' the product by a nanometer suspension. The medicament delivery system is used for promoting oral absorption of indissolvable medicaments, can obviously reduce the toxicity of the medicaments to human body, and can obviously improve the nanometer particle production efficiency and prevent aggregation problem in crosslinking by adding the cross-linking agent into the internal oil phase to cause crosslinking. The prepared nanometer suspension can be directly freeze-dried or laminated on the surface of a small pellet by a fluidized bed and then transformed into a solid preparation; re-solidified nanometer particles are easy to be re-dispersed in water, and the particle size is kept unchanged. According to the medicament delivery system, the stability is improved for a long time, and the compliance of patients is improved; and the preparation process is simple and easy for industrialization.

A crosslinkable powder composition is provided which is redispersible in water and comprises a) from 30 to 95 parts by weight of one or more water-insoluble, film-forming polymers of free-radically polymerizable, ethylenically unsaturated monomers, where from 0.5 to 10% by weight of the monomers, based on the total weight of the polymer a), are ones having one or more substituents selected from the group consisting of aldehyde, keto, epoxide, isocyanate, carboxylic anhydride and aziridine groups, b) from 5 to 70 parts by weight of one or more water-soluble, film-forming polymers, where the parts by weight of a) and b) add up to 100 parts by weight, and c) one or more compounds containing at least two functional groups which are present in salt form and are selected from the group consisting of amines, hydrazides, hydroxylamine esters, aryl- and alkylhydrazines or -hydrazones.

The present invention relates to an oral liquid suspension that includes lamotrigine and methods of medical treatment that include administering the oral liquid suspension. The oral liquid suspension has desirable physicochemical properties and technical attributes. The oral liquid suspension is useful in patients having difficulties in swallowing tablets and provide medical practitioners with additional options for dose titration.