250results about "N-vinyl-pyrrolidone polymer adhesives" patented technology

The present invention relates to a polylactic acid filter rod for cigarette. It is made up by using polylactic acid tow for cigarette through the processes of opening, adhesive bonding, bundling, cutting and after-treatment, its filament linear density is 2-8 dtex, its tow linear density is 3-6 ktex and its crimp ratio is 15-30/25 mm. The contacted parts of adjacent fibers are mutually bound and all fibers in the rod are cohesive together to form communicated 3-D network structure.

The present invention relates to a medical device having a wetted hydrophilic coating comprising:

• a coating composition containing a hydrophilic polymer and
• a wetting agent comprising water and one or more lubricant(s).

The invention provides a polymeric film-forming medical sealant. The medical sealant is useful for application to the tonsils and adenoids, wherein the sealant performs at least one of the following functions, a) inhibit the colonization of bacteria, b) inhibit the binding of bacteria to tissue, c) reduction of tissue morbidity, d) hemostasis, e) coating and protection of tissue during healing. e) promotion of healing, and f) reduction of pain.

The present invention relates to a removable pressure-sensitive adhesive composition containing an acrylic polymer, a photopolymerization initiator and a crosslinking agent, in which the acrylic polymer and the photopolymerization initiator each are chemically bonded to the crosslinking agent. The present invention also relates to a removable pressure-sensitive adhesive composition containing an acrylic polymer and a photopolymerization initiator, the composition further containing a crosslinking agent having a reactive functional group which is capable of reacting with a reactive functional group of the acrylic polymer and a reactive functional group of the photopolymerization initiator.

The present invention has as its object to provide a band-seal to manufacture a leak-tight, stable hard capsule preparation not being susceptible to deformation after having filled pharmaceuticals, foods, healthy foods, etc. in a hard capsule comprising a polyvinyl alcohol copolymer or pullulan as a base, and in more particular, relates to a band-seal intended for use in the hard capsule comprising a polyvinyl alcohol copolymer or pullulan as a base, characterized in that the band-seal is incorporated with at least one or not less than two of the below-described (a) to (c): (a) A polyvinylpyrrolidone with a molecular weight of 100,000 to 4,000,000, (b) A polyvinylpyrrolidone with a molecular weight of 10,000 to 80,000 in the proportion of not more than 90% by weight against the total weight of the band-seal; and (c) A copolymer from 1-vinyl-2-pyrrolidone and vinyl acetate.

The invention discloses a blue solid glue stick with the color being changed after application and a preparation method thereof. The blue solid glue stick comprises adhesives, humectant, excipient and visualization reagents and is characterized in that a body of the solid glue stick is blue; when in use, a coating is initially blue and then faded quickly to be colourless; and raw materials comprise the following components in percentage by weight: 4 percent to 50 percent of adhesives, 1 percent to 20 percent of humectant, 2 percent to 20 percent of excipient, 0.01 percent to 5 percent of visualization reagents, 0.1 percent to 3 percent of sodium hydroxide and 20 percent to 75 percent of water, and the total content of the components is 100 percent. When coated on paper, the blue solid glue stick is initially blue and then faded in a short time to be colourless; and the blue solid glue stick has the advantages of high adhesive force, long shelf life and stable glue color after long-term storage.

The invention discloses a high-stability allochroic solid adhesive and a preparation method thereof. The allochroic solid adhesive is prepared by the method according to the following steps: adding all the following raw materials in portion by weight into a reaction kettle of which the temperature is between 50 and 100 DEG C: 50 to 75 portions of dispersant water, 10 to 45 portions of bonding agent such as polyvinyl pyrrolidone, 5 to 18 portions of excipient such as sodium stearate, 5 to 15 portions of humectant such as glycerol, 0.1 to 1 portion of developer phenolphthalein, and proper amount of color stabilizer; stirring the raw materials at a temperature of between 80 and 100 DEG C for one hour, and then adjusting the pH to between 9 and 11; and then standing the mixture at a constant temperature, and bottling the mixture to obtain a purple solid adhesive. The allochroic solid adhesive has a reasonable and simple formulation, easy manufacture and production and low cost; the colloid is purple when the allochroic solid adhesive is coated on a substrate material, and the purple disappears in a short time to meet the requirements in specific fields; besides, the allochroic solid adhesive has the most prominent characteristic that the color is stable during storage and is basically unchanged for more than two years.

The invention relates to a novel amyloid cigarette adhesive containing s synthetic polymer. The amyloid cigarette adhesive comprises, by weight, 35%-85% of water, 5%-50% of pyrolyzed dextrin, 5%-50% of sucrose, 0.1%-20% of the synthetic polymer, 0.05%-1% of a preservative, 0.05%-1% of a defoaming agent and 0-5% of auxiliary agents. The cigarette adhesive provided by the invention has good viscosity, fluidity and stability, can be stably stored for more than three months at a room temperature, can be used as any adhesive such as lap adhesive, tipping adhesive, filter rod central line adhesive, packaging adhesive and aluminum foil laminated adhesive in cigarette production, and is applicable to any cigarette machine, particularly a cigarette machine with a single-gun speed higher than 7,000 cigarettes/minute and a highly speed cigarette machine with a speed higher than 10,000 cigarettes/minute. The cigarette adhesive provided by the invention can be also applied in situations such as paper bindings, bottle labels and packing boxes which relate to paper bonding.

A lignocellulosic-based composite composition comprising an adhesive and a water soluble polymer that increases the tack of the composition.

Provided are an optical component having an excellent corrosion inhibition effect while maintaining a high level of adhesion reliability and transparency, as well as a pressure-sensitive adhesive composition and a pressure-sensitive adhesive sheet that can produce such an optical component efficiently and at a low cost. The pressure-sensitive adhesive composition according to the present invention includes a rust inhibitor and a base polymer, characterized in that the base polymer does not or substantially does not contain an acid group-containing monomer as a constituent monomer component. Further provided is a pressure-sensitive adhesive sheet having a pressure-sensitive adhesive layer formed from such pressure-sensitive adhesive composition.

Disclosed is a protective film composition for wafer dicing, comprising at least one resin selected from the group consisting of polyethyloxazoline and polyvinylpyrrolidone, at least one component selected from the group consisting of a water-soluble resin and an alcoholic monomer, and a solvent, such as water or a mixture of water and an organic solvent.

The present invention relates to the thermoplastic hydrophilic adhesive compositions having an increased adhesion capability and stability on moist or wet surfaces. The adhesive compositions comprise a thermoplastic hydrophilic homogeneous polymeric matrix having selected liquid absorption capacity, liquid absorption rate, and rheology. The adhesive compositions of the present invention are particularly suitable as topical adhesives for skin adhesion of articles such as disposable waste management articles, disposable absorbent articles, and personal care articles.

The invention discloses a solid glue stick, and is prepared with watercraft polyurethane latex as a major glue component, water as solvent, sodium stearate as gel, and polyvinyl alcohol and polyethylene pyrrole azululanone as accessory ingredients, and moderate glycerol added as humectant, wherein a self-emulsion method is adopted for the preparation of the watercraft polyurethane latex. The invention has the advantages that coated surface of the watercraft polyurethane adhesive adopted in preparing the solid glue stick is not easy to be damaged; the mechanical property is excellent; the modification is easy; the compatibility with paint is good; the prepared solid glue stick has obvious advantages in properties of assigned model, hardness, coating, and splicing, etc.; the exterior is pure white; the feeling is subtle; the splicing property is good; the drying speed is high; time for paper tearing is less than one minute; the hydrating period is as long as one year; the reserve property is fine.

Hot melt adhesive compositions suitable for a variety of applications, especially in nonwoven disposable articles, are prepared by blending various adhesive components with a bacteriostat. The bacteriostat is incorporated into the adhesive compositions in sufficient amounts to inhibit the growth of various microorganisms, particularly bacteria. The preferred bacteriostat is triclosan in amounts of 0.0 1 % to 5 % by weight.

The invention provides a transparent solid adhesive which comprises the following components in percentage by weight: 4-50% of an adhesive, 1-20% of a humectant, 2-20% of gel, 3-6% of an active agent, 0.5-2% of a defoaming agent, 0.1-1% of a preservative, 0.1-3% of PH adjusting agent and 20-75% of water. Compared with the prior art, the transparent solid adhesive has the beneficial effects that the solid adhesive is transparent in color, high in hardness, good in moisture retention, smooth without reside dropping when being coated, good in oxidation resistance and environment-friendly and non-toxic.

The present invention is a pressure sensitive adhesive comprising: an ingredient (A) which is a copolymer of a carboxyl group-containing monomer and (meth)acrylic ester; and an ingredient (B) which is a copolymer of a pyrrolidone group-containing monomer and (meth)acrylic ester, wherein the ingredient (A) is crosslinked by at least one crosslinking agent selected from the group consisting of a metal chelate compound, a metal oxide and a metal hydroxide, and the blending ratio of the ingredient (A) is 70 to 90 weight % based on the total amount of the ingredient (A) and ingredient (B).

The present invention relates to an optical acrylic pressure-sensitive adhesive composition, containing: 100 parts by mass of an acrylic polymer (A) which contains a vinylic monomer having a nitrogen atom in a skeleton thereof as a monomer unit and does not substantially contain a monomer containing a carboxyl group; 1-70 parts by mass of a (meth)acrylic polymer (B) having a weight average molecular weight of 1,000 or greater and less than 30,000; and 1-50 parts by mass of a hydrogenated tackifying resin (C), and an optical acrylic pressure-sensitive adhesive tape including a pressure-sensitive adhesive layer containing the optical acrylic pressure-sensitive adhesive composition.

The invention discloses environment-friendly aqueous thermoprinting back glue for a tipping paper thermoprinting film and a preparation method thereof, wherein the formula thereof comprises the following components in mass ratio: 20 to 60 percent of thermosetting emulsion, 10 to 50 percent of thermoplastic emulsion, 5 to 40 percent of deionized water, 5 to 30 percent of film forming emulsion, 0 to 5 percent of film forming auxiliary agent, 0 to 3 percent of flatting agent, 0 to 3 percent of wetting agent, 0 to 3 percent of defoaming agent and a proper amount of pH control agent. The back glue is prepared by adopting a two-step material mixing method, and excellent product stability and uniformity can be obtained through controlling with different stirring speed and stirring time. A totally aqueous material is adopted by the invention, and balance is comprehensively obtained by utilizing the brittleness of the thermosetting emulsion, the flexibility of the thermoplastic emulsion and the film forming property of the film forming emulsion. According to the invention, zero emission can be realized in the production process, and the environment-friendly aqueous thermoprinting back glue for the tipping paper thermoprinting film, which has zero VOC, high solid content, low viscosity, adaptability for high-speed thermoprinting for many times, clear patterns, no metal flying and good adhesive force can be prepared.