1998results about "Polyether adhesives" patented technology

3,4-Dihydroxyphenyl-L-alanine (DOPA) is an unusual amino acid found in mussel adhesive proteins (MAPs) that form tenacious bonds to various substrates under water. DOPA is believed to be responsible for the adhesive characteristics of MAPs. This invention relates to a route for the conjugation of DOPA moieties to various polymeric systems, including but not limited to poly(ethylene glycol) or poly(alkylene oxide) systems such as poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) (PEO-PPO-PEO) block copolymers.

In one embodiment the invention is An adhesive composition comprisinga) a polymer having a flexible backbone and a reactive moiety capable of cross-linking,b) a particle comprising an active agent encapsulated in an encapsulating agent wherein the active agent comprises a catalyst for cross-linking of the reactive moiety, a curing agent for the reactive moiety, an accelerator for the curing reaction or a mixture thereof; and the encapsulating agent comprises a side chain crystallizable polymer wherein the active agent is not substantially extractable from the particle at ambient conditions in a first extraction after particle formation.This composition is used in binding two subtracters together.

The invention describes DOPA functionalized, branched, polyalkylene oxide materials that are useful as adhesives.

Incorporating organophilic clay into hot melt adhesive compositions, particularly those comprising semi-crystalline, thermoplastic polymers, greatly improves the adhesive properties in many respects. Some of these improvements are particularly beneficial to the specific use of hot melt adhesives filled with electrically conductive particles for use as electrically conductive adhesives.

Synthesis methods for creating polymeric compounds comprising dihydroxyphenyl derivatives (DHPD), or DHPp i.e. polymers modified with DHPD, with desired surface active effects are described. The polymer backbone of DHPp has structural or performance features that can be tailored to control physical properties of DHPp, allowing it to be useful for different applications i.e. tissue adhesives or sealants, adhesion promoting coatings, and antifouling coatings.

Adhesive polymeric compositions which can comprise dihydroxyphenyl moieties and derivatives thereof, and related methods of use.

An object of the present invention is to provide an antistatic pressure-sensitive adhesive composition which is excellent in antistatic property and antistatic property with time of a non-electrification-prevented adherend (subject to be protected) upon peeling, and has reduced stainability in an adherend and is excellent in adhesion reliance, and electrification preventing pressure-sensitive adhesive sheets using the same. There is provided a pressure-sensitive adhesive composition comprising an ionic liquid, and a (meth)acryl-based polymer containing, as a monomer component, 0.01 to 20% by weight of a reactive surfactant shown by the following general formula (I) as a monomer unit. [in the formula (I), R1, R2, and R3 indicate likewise or differently hydrogen or the methyl group, R4 indicates an alkylene group of 0 to 30 in carbon number (further, 0 in carbon number means that there is no R4), R5 and R6 indicate likewise or differently alkylene groups of 1 to 30 in carbon number, m indicates the number of 0 to 50 (may not be an integer), n indicates the number of 0 to 100 (may not be an integer), m+n indicates the number of 1 to 150 (may not be an integer), and X indicates hydrogen or an anionic hydrophilic group]

A moisture-curable adhesive composition that may be formulated to be free of volatile organic compounds, or substantially free of volatile organic compounds which is safe for chronic exposure, resistant to combustion, and provides a high peel strength useful for securing a rubber membrane material to a rigid roof deck includes a polymer having silicon-containing hydrolyzable terminal groups, a phenolic resin, and a non-polymeric silicon-containing hydrolyzable compound, wherein the ratio of the amount of polymer having silicon-containing hydrolyzable terminal groups by weight to the amount of phenolic resin by weight is greater than 2:1.

A wet-stick pressure-sensitive adhesive is provided wherein the pressure-sensitive adhesive comprises: at least one copolymerized monoethylenically unsaturated (meth)acrylic acid ester monomer, wherein the (meth)acrylic acid ester monomer, when homopolymerized, has a Tg of less than about 10° C.; at least one copolymerized hydrophilic acidic comonomer; and at least one nonreactive copolymer comprising at least two copolymerized alkylene oxides, at least one of which is hydrophobic and at least one of which is hydrophilic.

Disclosed is a halogen-free resin composition comprising: (A) one or more phosphorus-containing epoxy resins; (B) a hardener; (C) a hardening accelerator; (D) a polyphenylene oxide resin; and (E) a filling material, wherein the hardener of component B has the structure represented by the following formula (I): wherein each symbol is as defined above. The halogen-free resin composition of the present invention without adding halogen has excellent heat resistance and flame retardant property, and excellent dielectric property. The halogen-free resin composition of the present invention is particularly useful in the application of bonding sheets, composite materials, laminated plates, printed circuit boards, copper foil adhesives, inks used for build-up process, semiconductor packaging materials and the like.

The invention discloses low-modulus single-component silane modified polyether sealing gum which consists of the following components: silane modified polyether, a plasticizer, pigment, fillers, a thixotropic agent, an ultraviolet light absorber, a catalyst, a dehydrating agent and an adhesion promoter. According to the silane modified polyether sealing gum disclosed by the invention, by controlling the technical parameters such as the types and contents of the fillers, the types and content of the plasticizer, and the types and content of the thixotropic agent, the prepared silane modified polyether sealing gum does not need prime coat, does not contain isocyanate, is economical and environmentally-friendly, low in modulus, can bear dynamic juncture, has good flexibility, cohesiveness and good storage stability, can be firmly adhered with concrete, PVC (Polyvinyl Chloride) materials, aluminum sheets, glass, steel products, ceramic and the like, and can be widely applied to the fields of roads, bridges and buildings.

A pressure sensitive adhesive composition is provided that includes a pressure sensitive adhesive polymer. The polymer includes: at least one copolymerized monoethylenically unsaturated (meth)acrylic acid ester monomer, wherein the (meth)acrylic acid ester monomer, when homopolymerized, has a Tg of less than about 25° C.; at least one copolymerized monoethylenically unsaturated reinforcing monomer, wherein the reinforcing monomer, when homopolymerized, has a Tg of at least about 25° C.; covalently bonded quarternary ammonium functionality; and, optionally, at least one copolymerized monoethylenically unsaturated poly(alkylene oxide) monomer. The composition optionally further includes at least one nonreactive poly(alkylene oxide) polymer and / or at least one antimicrobial agent.

Disclosed is a triple layered ACA film adapted for enhancing the adhesion strength of a typical single layer Anisotropic Conductive Film or for enhancing the adhesion strength of the ACA film in flip chip bonding. The triple layered ACA film of the invention comprises: a main ACA film based upon epoxy resin and containing conductive particles having a particle size of 3 to 10 μm and optionally non-conductive particles having a particle size of 0.1 to 1 μm; and adhesion reinforcing layers based upon epoxy resin and formed at both sides of the main ACA film.

An asymmetric tape and a system and method for impregnating at least one fiber roving with a polymer resin to form an asymmetric tape are provided. The asymmetric tape includes a polymer resin, and a plurality of fibers embedded in the polymer resin to form a fiber reinforced polymer material. The fiber reinforced polymer material includes a first surface and an opposing second surface. The fibers are disposed in the fiber reinforced polymer material to form a resin rich portion and a fiber rich portion. The resin rich portion includes the first surface and the fiber rich portion includes the second surface.

The invention describes substrates, such as prosthetics, films, nonwovens, meshes, etc. that are treated with a bioadhesive. The bioadhesive includes polymeric substances that have phenyl moieties with at least two hydroxyl groups. The bioadhesive constructs can be used to treat and repair, for example, hernias and damaged tendons.

The invention relates to the use of an adhesive composition comprising at least one silyl-containing polymer, at least one compatible tackifying resin and at least one catalyst, to make a breathable self-adhesive article. The invention also relates to a breathable self-adhesive article comprising at least one breathable substrate coated with a breathable adhesive layer. The invention also relates to a pressure-sensitive adhesive composition.

The gasket of the present invention is mainly comprised of a pressure-sensitive adhesive sheet containing a non-halogenated flame retardant, and at least one surface thereof is a pressure-sensitive adhesive face of the pressure-sensitive adhesive sheet containing a non-halogenated flame retardant.According to the present invention, a highly flame retardant gasket having practically sufficient tight-sealing property, which does not produce a toxic halogen gas during combustion can be realized. In addition, a highly flame retardant gasket having practically sufficient tight-sealing property, which does not produce a toxic halogen gas during combustion, and does not cause corrosion and discoloration of a metal member to be an adherend can be realized.

In accordance with the present invention, there are provided film adhesive compositions comprising at least one macromonomer having at least one unit of ethylenic unsaturation, at least one thermoplastic elastomer co-curable with the macromonomer, and at least one cure initiator, and methods for use thereof. Invention compositions are useful as adhesives in the microelectronics industry. In particular, invention film adhesives may be used to produce microelectronic assemblies with very thin bond lines without compromising adhesive strength.

This invention has its object to provide a curable resin compositions useful as contact adhesives with a prolonged tack retention period, without affecting the final bond strength. This invention is related to a A curable resin composition which comprises (I) a reactive silicon group-containing polyether oligomer, (II) a copolymer comprising a molecular chain substantially composed of one or more acrylate ester monomer units and / or methacrylate ester monomer units and (III) an accelerator.

A pressure sensitive adhesive is provided which is comprised of at least one radiation cured oligomer and / or monomer which is cured in situ on a substrate in the form of a coating. The adhesive comprises an insoluble polymer which comprises a plurality of polyether segments comprising —CaH2aO— repeat units, wherein a is an integer of 1 to 4, with the segments comprising from about 20 to about 85 percent by weight of polymer.

The invention relates to a monocomponent flame-retardant silane modified polyether sealant and a preparation method thereof. The sealant of the invention comprises an MS-polymer resin, a plasticizer, a reinforcement filler, a thixotropic agent, an ultraviolet ray absorbing agent, an ultraviolet ray stabilizing agent, a flame retardant, a crosslinking agent, a hydroxy group scavenger, a coupling agent, an organic tin catalyst and the like. The obtained monocomponent flame-retardant silane modified polyether sealant has the advantages of flame retardation, fast solidification, strong strength, and high weather resistance.

Synthesis methods for creating polymeric compounds comprising dihydroxyphenyl derivatives (DHPD), or DHPp i.e. polymers modified with DHPD, with desired surface active effects are described. The polymer backbone of DHPp has structural or performance features that can be tailored to control physical properties of DHPp, allowing it to be useful for different applications i.e. tissue adhesives or sealants, adhesion promoting coatings, and antifouling coatings.

The invention discloses a battery or conductive adhesive applied to a capacitor and an electrode composition; the composition contains the conductive adhesive. According to the percentage of total mass, the conductive adhesive consists of 10-30 percent of matrix and 70-90 percent of solvent; the matrix is a composite, which essentially contains 30-60 percent of electronic conductive polymer and 40-70 percent of ion conductive polymer by mass ratio. The electronic conductive polymer is a homopolymer or copolymer and polymerized by at least one aromatic monomer with a conjugate structure; the ion conductive polymer is a polyether or a homopolymer or copolymer containing dissociative polar groups. Since the adhesive has the performance of electronic or ion conductive, the consumption of conductive agent can be reduced, or the additional conductive agent can not be needed; therefore, specific capacity of the battery and the capacitor can be increased; the contacting resistance among active materials and between the active materials and current collector can be reduced, thus improving chemical performance of the battery and the capacitor.

The invention discloses a bi-component silane modified polyether sealing material and a preparation method thereof. The bi-component silane modified polyether sealing material comprises silane modified polyether, a plasticizer, an incremental filler A, a reinforcing filler, a toner, a thixotropic agent, a light stabilizer, hollow glass microspheres, a cross-linking agent, a coupling agent, an incremental filler B, an organic tin catalyst and a titanium catalyst. According to the bi-component silane modified polyether sealing material, organic tin is partially replaced with the titanium catalyst and is low in content, so that the harm of organic tin can be reduced; the production process is simple, a high temperature dehydration process is omitted, and the cost is low; the external and internal parts of a glue layer are simultaneously cured by virtue of moisture of the glue layer during curing, so that the defects that single-component silane modified polyether sealing glue is cured from outside to inside by virtue of moisture and the dept curing is slow are overcome, and the variation of curing rate along the external environment is small, so that the production efficiency is greatly improved; the bi-component silane modified polyether sealing material has good construction stability and can be widely applied to the fields of buildings, automobiles, locomotives, electric products and the like.

The invention discloses a single-component silane modified polyether seal gel and making method, which comprises the following parts: MS-polymer resin, elasticizer, increment / reinforcing fill, thixotropic agent, ultraviolet adsorbent, stabilizer, adhesive accelerant and organic tin hardener for industrial domain.

The invention relates to a silane modified polyether sealant and a preparation method thereof. The silane modified polyether sealant is prepared from a silane modified polyether polymer, a plasticizer, a reactive diluent, bulking filler, an initial adhesion accelerator and other components. The initial adhesion of the silane modified polyether sealant is improved substantially under the synergistic effect of the reactive diluent and the initial adhesion accelerator, rapid positioning and follow-up repairing can be realized, and the sealant is convenient to use. The silane modified polyether sealant effectively broadens the application range of reactive silane modified polyether sealants and has an active promoting effect on popularization of environment-friendly products.

Polymer compositions for preparing sealants, adhesives and coatings are provided. The polymer compositions comprise from 1 to 99% by weight of an organic polymer comprising functional silane groups, from 1 to 45% by weight (based on total polymer) of at least one reactive or non-reactive organopolysiloxane polymer; from 0 to 98% by weight (based on total polymer) of an organic polymer that lacks functional silane groups.

A circuit material, comprising a conductive metal layer or a dielectric circuit substrate layer and an adhesive layer disposed on the conductive metal layer or the dielectric substrate layer, wherein the adhesive comprises a poly(arylene ether) and a polybutadiene or polyisoprene polymer.

The invention describes new synthetic medical adhesives and films which exploit the key components of natural marine mussel adhesive proteins.

A circuit subassembly, comprising a dielectric layer formed from a dielectric composition comprising, based on the total volume of the composition: about 15 to about 65 volume percent of a dielectric filler; and about 35 to about 85 volume percent of a thermosetting composition comprising: a poly(arylene ether), and a carboxy-functionalized polybutadiene or polyisoprene polymer.