32results about How to "High glass transition" patented technology

The invention is based on the discovery that adhesive compositions containing certain low-viscosity, mono-ethylenically unsaturated monomers have surprisingly good cure parameters, resulting in very little weight loss upon cure. Many of these monofunctional monomers used alone or in combination with other monofunctional monomers described herein have high glass transition temperatures when cured. Moreover, since these monomers are monofunctional the crosslink density of the adhesive composition does not increase (relative to multi-functional monomers), which in turns results in lower stress, lower modulus adhesive compositions. As such, these monomers are useful in a variety of thermoset adhesive compositions, such as for example, die attach adhesive compositions.

A high refractive index, foldable polymer suitable for use in ophthalmic devices, such as intraocular lenses, is provided. The polymer may be produced from a polymerization reaction of first, second and third monomeric components and a crosslinking agent. The first monomeric component includes an aryl acrylate or an aryl methacrylate. The second monomeric component, which is not an acrylate, includes a monomer having an aromatic ring with a substituent having at least one site of ethylenic unsaturation. The third monomeric component includes a high water content hydrogel-forming monomer. The resulting high refractive index copolymer is durable enough to be cut and polished when dry, and becomes soft and foldable when hydrated.

The invention is based on the discovery that adhesive compositions containing certain low-viscosity, mono-ethylenically unsaturated monomers have surprisingly good cure parameters, resulting in very little weight loss upon cure. Many of these monofunctional monomers used alone or in combination with other monofunctional monomers described herein have high glass transition temperatures when cured. Moreover, since these monomers are monofunctional the crosslink density of the adhesive composition does not increase (relative to multi-functional monomers), which in turns results in lower stress, lower modulus adhesive compositions. As such, these monomers are useful in a variety of thermoset adhesive compositions, such as for example, die attach adhesive compositions.

This invention relates to a medical device comprising a UV-cured silicone polymer coating on at least a portion of a surface of the device and at least one polyester composition comprising a cyclobutanediol and methods for making the medical device.

Processes for controlled sulfonation of a polyaryletherketone comprise reacting a monomer of formula VIII with a monomer of formula IX to form a polyaryletherketone; and sulfonating the polyaryletherketone to form a sulfonated polyaryletherketone comprising structural units of formula IV

wherein R¹ is halogen, C₁-C₁₀ alkyl, C₃-C₁₂ cycloalkyl, or C₃-C₁₅ aryl;

a is an integer from 0 to 4; Y is F, Cl, Br or a mixture thereof; m is 0 or 1; and Q is H, a metal cation, a non-metallic inorganic cation, an organic cation or a mixture thereof.

Polyimides displaying low color in thin films, atomic oxygen resistance, vacuum ultraviolet radiation resistance, solubility in organic solvents in the imide form, high glass transition (T_g) temperatures, and high thermal stability are provided. The poly(amide acid)s, copoly(amide acid)s, polyimides and copolyimides are prepared by the reaction of stoichiometric ratios of an aromatic dianhydride with diamines which contain phenylphosphine oxide groups in polar aprotic solvents. Controlled molecular weight oligomeric (amide acid)s and imides can be prepared by offsetting the stoichiometry according to the Carothers equation using excess diamine and endcapping with aromatic anhydrides The polyimide materials can be processed into various material forms such as thin films, fibers, foams, threads, adhesive film, coatings, dry powders, and fiber coated prepreg, and uses include thin film membranes on antennas, second-surface mirrors, thermal optical coatings, and multi-layer thermal insulation (MLI) blanket materials.

This invention relates to a glass substrate having a high glass transition temperature, a thermal expansion coefficient near that of soda-lime glass, and a low specific gravity, which is not prone to yellowing, and which also has good solubility and high productivity. The glass substrate has a composition in mass % in terms of oxide amount which is SiO₂: 55-65%, Al₂O₃: 4-8%, MgO: 6-9%, CaO: 0.1-5%, SrO: 0.5-6%, BaO: 0-2%, MgO+CaO+SrO+BaO: 6.6-19%, Na₂O: 0-5%, K₂O: 9.5-21%, Na₂O+K₂O: 10-22%, ZrO₂: 0.5-5%, and Fe₂O₃: 0.06-0.15%, has a specific gravity of 2.7 or less, an average thermal expansion coefficient at 50-350° C. of 80×10⁻⁷/° C. to 90×10⁻⁷/° C., and a glass transition temperature of at least 640° C., wherein, defining η as viscosity, the temperature satisfying log η=2 is at most 1550° C., and the yellow coloring b* of the glass surface is at most 8.

A production method for a fiber-reinforced composite material comprises: a first step of stacking a prepreg including: a reinforcing fiber layer including reinforcing fibers and a resin composition with which the space between fibers of the reinforcing fibers is impregnated and a surface layer provided on at least one surface of the reinforcing fiber layer and containing polyamide resin particles having an average particle size of 5 to 50 μm and a melting point of 175 to 210° C. plurally and performing heating at a temperature of 120° C. or more and less than M₁° C. when the melting point of the polyamide resin particles measured in the composition forming the surface layer is denoted by M₁° C.; and a second step of performing heating at a temperature of M₁° C. or more after the first step to cure the resin.

Proton exchange membrane (PEM) fuel cells, also known as polymer electrolyte membrane fuel cells, consist of a proton conducting membrane or a proton exchange membrane possessing adequate proton conducting properties typically contained between two platinum impregnated porous electrodes. PEM fuel cells are used in the transportation, stationary and portable applications and are currently used in the automobile industry as the fuel cell favored for replacement of the internal combustion engine. An opportunity exists for the development of lightweight and highly conductive polymer-based bipolar plates produced by standard mass production techniques, such as extrusion or compression and injection molding. The present invention capitalizes this opportunity and discloses method and compositions of matter for manufacturing of lightweight, low cost carbon-filled polymer composite bipolar plates.

The present invention relates to a polarizing plate including: a polarizer; and a protective layer formed on at least one surface of the polarizer, in which the protective layer is a cured product of a radical curable composition including: (A) a radical polymerizable compound having at least one hydrophilic functional group in a molecule thereof; (B) a phosphate-based compound having three (meth)acryl groups in a molecule thereof; and (C) a radical initiator, and an image display device including the same.

The application discloses a construction method of a ceramic tile seam beauty agent. The construction method divides the construction of the ceramic tile seam beauty agent into two working proceduresof filling a bottom layer and filling a surface layer. Moreover, aqueous emulsion in a seam filling agent of the bottom layer has glass transition temperature between 30 and 70 DEG C, and the glass transition of the aqueous emulsion is higher, so that the hardness and adhesion of the seam filling agent of the bottom layer are higher after curing is performed. In addition, filling materials in theseam filling agent of the bottom layer is further beneficial to improve the hardness and adhesion of the seam filling agent of the bottom layer after curing is performed, the problem that the seam beauty agent falls off after long time is solved, and thus long-term firmness of the seam beauty agent is realized. Moreover, a seam filling agent of the surface layer is an acrylic seam beauty agent, and therefore, the construction method solves the problem that flat matt cannot be make caused by yellowing of the seam beauty agent. In addition, the construction method realizes that gaps of ceramic tiles do not become black and do not grow mildew so that glitter powder products can achieve the corresponding flashing effect after construction is performed.

A use of a filament in 3D printing is disclosed. The filament includes a thermoplastic polymer and detonation nanodiamonds. The filament exhibits increased tensile strength and thermal conductivity and higher glass transition temperature compared to filaments not including detonation nanodiamonds. 3D items produced with the filament exhibits increased tensile strength and thermal conductivity.

A thermosetting resin composition and a prepreg and a metal foil-covered laminate made using same, the thermosetting resin composition comprising component (A): a solvent-soluble polyfunctional vinyl aromatic copolymer, the copolymer being a poly-functional vinyl aromatic copolymer having a stoctoal unit derived from monomers comprising divinyl aromatic compound (a) and ethyl vinyl aromatic compound (b); and component (B): a vinyl-containing organic silicone resin. The prepreg and metal foil-covered laminate made from the thermosetting resin composition have good toughness, and maintain a high glass transition temperature, a low water absorption, dielectric properties and humidity resistance, being suitable for the field of high-frequency and high-speed printed circuit boards and the processing of multilayer printed circuit boards.

The present invention relates to a polarizing plate including a polarizer; and a protective layer formed on at least one surface of the polarizer, in which the protective layer is a cured product of a radical curable composition including (A) a first compound represented by [Formula 1], (B) a radical curable second compound having two or more of each of a benzene ring, a (meth)acryloyl group, and a carboxy group in a molecule thereof, and (C) a radical initiator, and an image display device including the same.

The invention relates to an organic electronic device comprising at least one electron transport, electron injection or electron generation layer comprising a compound of Formula (I) wherein all positions which are not linked to a -(A)a-L moiety at a *- position may be bound to another substituent; A is selected from substituted or unsubstituted aryl or heteroaryl; L is selected from substituted or unsubstituted aryl or heteroaryl or a group (II) and (III); and “a” is an integer from 0 to 2; to the compounds of Formula (I) as well as to display and lightning devices comprising the same.

The invention discloses a durable wear-resistant souvenir medal and a preparation method thereof. The durable wear-resistant souvenir medal comprises a souvenir medal body and a protective layer arranged on the surface of the souvenir medal body, the protective layer is made of modified polyether-ether-ketone, and a preparation method of the modified polyether-ether-ketone comprises the following steps: S1, performing hydroxylation modification on polyether-ether-ketone to obtain hydroxylated polyether-ether-ketone; s2, adsorbing and grafting 4-sulfonic acid pyrimidine-2-carboxylic acid on the imosa dissa, so as to form 4-sulfonic acid pyrimidine-2-carboxylic acid/imosa dissa; and S3, carrying out a binding reaction on the 4-sulfonic acid pyrimidine-2-carboxylic acid/imosa and the hydroxylated polyether-ether-ketone, so as to obtain the modified polyether-ether-ketone. The souvenir medal comprises a souvenir medal body made of a metal material and a souvenir medal protective layer made of a plastic material. The protective layer of the souvenir medal is prepared by modification on the basis of polyether-ether-ketone resin, and the prepared protective layer has higher glass transition stability and stronger wear resistance.