5095 results about "Solvent free" patented technology

Methods for preparing articles having a bioactive surface comprising treating a substrate to form free reactive groups, depositing a monomer onto the treated substrate, and covalently immobilizing a biologically functional molecule onto the deposited monomer. Additional embodiments include methods for the deposition of the monomer onto the treated substrate in a solvent-free environment. Further embodiments include articles having surfaces prepared using the methods described herein. Additional embodiments include articles prepared using the methods described herein.

Crosslinked compositions formed from water-insoluble copolymers are disclosed. These compositions are copolymers having a bioresorbable region, a hydrophilic region and at least two cross-linkable functional groups per polymer chain. Crosslinking of these polymers can be effected in solution in organic solvents or in solvent-free systems. If crosslinking occurs in a humid environment, a hydrogel will form. If crosslinking occurs in a non-humid environment, a xerogel will form which will form a hydrogel when exposed to a humid environment and the resulting crosslinked materials form hydrogels when exposed to humid environments. These hydrogels are useful as components in medical devices such as implantable prostheses. In addition, such hydrogels are useful as delivery vehicles for therapeutic agents and as scaffolding for tissue engineering applications.

There is provided a method for making bituminous compositions comprising water-in-oil bituminous dispersion and aggregate by the steps of: preparing a solvent-free, water-in-oil bituminous dispersion comprising: (1) bitumen, in an amount from about 75.0% to about 95.0% by total weight of the bitumen dispersion; (2) a surfactant in an amount from about 0.05% to about 2.0% by total weight of the bitumen dispersion; and (3) water in an amount to complete the water-in-oil bituminous dispersion, and producing the bituminous composition having a temperature from about 50° C. to about 120° C. by mixing: (1) the water-in-oil bituminous dispersion of step (A), having a temperature from about 75° C. to about 95° C., in an amount from about 2.0% to about 10.0% by total weight of the bituminous composition, and (2) aggregate, having a temperature from about 60° C. to about 140° C., in an amount from about 90.0% to about 98.0% by total weight of the bituminous composition.

A process for manufacturing a porous metal-containing material is provided. For example, a composition is provided comprising particles dispersed in at least one solvent, the particles comprising at least one polymer material and at least one metal-based compound. The solvent can be substantially removed from the composition, and the polymer material can be substantially decomposed, thereby converting the solvent-free particles into a porous metal-containing material. In addition, metal-containing materials produced in accordance with the above process and their use in implantable medical devices can be provided.

The present invention relates to a radiation-curable solvent-free coating composition for optical fiber having a radiation-curable urethane (meth)acrylate oligomer comprising an alkyd backbone,a reactive diluent, and a photoinitiator, and optionally an additive.

An integrated circuit chip carrier assembly is provided by joining a substrate having electrically conductive regions on at least one major surface thereof to a stiffener by a bonding film. The bonding film comprises a dielectric substrate having a thermoset adhesive on both of its major surfaces. The thermoset adhesive prior to the bonding is a B-stage adhesive, is tack-free at normal room temperatures and is solvent free.

A solventless cured release coating-forming organopolysiloxane composition having a viscosity at 25° C. of 50 to 2,000 mPa·s comprising (A) 100 weight parts of an alkenyl-functional diorganopolysiloxane that has a viscosity of 25 to 1,000 mPa·s; (B) 0.5 to 15 weight parts of a diorganopolysiloxane that has a viscosity of at least 10,000 mPa·s and that has an aliphatically unsaturated group content of no more than 0.1 mole %; (C) 0.5 to 5 weight parts of a branched organopolysiloxane that has more than one SiO_4/2 unit and that is a polymer product provided by an equilibration polymerization between a branched organosiloxane oligomer represented by the average siloxane unit formula (1) (SiO_4/2)(R^aR^b₂SiO_1/2)_x(1) and a diorganosiloxane oligomer; (D) a specific amount of an organohydrogenpolysiloxane that has a viscosity of 1 to 1,000 mPa·s; and (E) a hydrosilylation reaction catalyst in a catalytic quantity.

The present invention relates to solvent-free processes for the preparation of mono-substituted fluorinated oxetane monomers. Once prepared, the mono-substituted fluorinated oxetane monomers can be used to prepare prepolymers and polymers having fluorinated alkoxymethylene side chains.

The invention discloses solvent free bi-component polyurethane adhesive and a preparation method thereof, wherein the solvent free bi-component polyurethane adhesive relates to a compound soft package adhesive in the fields of food, medicine, and the like. The adhesive comprises a component A and a component B, wherein the component A is an isocyanate compound, the component B is polyol, and the adhesive is obtained in such a way that the component A and the component B are mixed according to the weight percent of 2:1. The adhesive solves the problem that the use effect is influenced and the use range is limited because of poor properties of transparency, viscosity, low-temperature coating and stripping strength, and boiling resistance existing in the prior solvent free adhesive. The adhesive is environmental-friendly without solvent because the component A and the component B of the adhesive both are transparent liquid, has low viscosity as well as better low-temperature coating and stripping strength, and keeps better stripping strength after being boiled, thereby being environmental-friendly adhesive, wherein the viscosity of the component A is 2000-5000MPa.s and the viscosity of the component b is 400-2000MPa.s below 25 DEG C.

A process for upgrading hydrocarbonaceous oil containing heteroatom-containing compounds where the hydrocarbonaceous oil is contacted with a solvent system that is a mixture of a major portion of a polar solvent having a dipole moment greater than about 1 debye and a minor portion of water to selectively separate the constituents of the carbonaceous oil into a heteroatom-depleted raffinate fraction and heteroatom-enriched extract fraction. The polar solvent and the water-in-solvent system are formulated at a ratio where the water is an antisolvent in an amount to inhibit solubility of heteroatom-containing compounds and the polar solvent in the raffinate, and to inhibit solubility of non-heteroatom-containing compounds in the extract. The ratio of the hydrocarbonaceous oil to the solvent system is such that a coefficient of separation is at least 50%. The coefficient of separation is the mole percent of heteroatom-containing compounds from the carbonaceous oil that are recovered in the extract fraction minus the mole percent of non-heteroatom-containing compounds from the carbonaceous oil that are recovered in the extract fraction. The solvent-free extract and the raffinate concentrates may be used directly or processed to make valuable petroleum, chemical or industrial products.

Elastomers are formed from castor oil and/or ricinoleic acid estolides and a polyester formed from an epoxidized vegetable oil such as ESO and a polycarboxylic acid such as sebacic acid, optionally in the presence of a peroxide initiator, or include crosslinked reaction products derived from ricinoleic acid or castor oil estolides, epoxy group-containing compounds such as epoxy resins and/or epoxidized vegetable oil, epoxy hardeners such as polyamine and polycarboxylic acid hardeners, thermally activated free radical initiators such as peroxides, and optionally but preferably include fillers such as limestone or wood flour. The elastomers can be prepared using a two-step, solvent-less procedure at elevated or ambient temperatures. These predominantly "all-natural" elastomers have physical properties comparable to conventional petroleum-based elastomers and composites and exhibit good flexibility, resiliency, abrasion resistance and inertness to hydrolysis. The resulting elastomers display good mechanical strength and resiliency, are resistant to abrasion and hydrolysis, and can be processed into sheet materials, which makes them attractive as floor covering components.

The invention provides bicomponent high-strength sprayed polyurethane waterproof paint. The paint consists of a component A and a component B according to the volume ratio of 1 to 1, wherein the component A is a semi-prepolymer synthesized by polyisocyanate with low functionality and polyether glycol; according to weight portion, the component A comprises 50 to 80 portions of the polyisocyanate with functionality of between 2.0 and 2.4 and 20 to 50 portions of the polyether glycol with functionality of between 2 and 4; and the component B comprises 40 to 84 portions of the polyether polyol or amino-terminated polyether or mixture of the polyether polyol and the amino-terminated polyether, 10 to 40 portions of amine chain extender or alcohol chain extender or mixture of the amine chain extender or the alcohol chain extender and 0 to 20 portions of pigment filler and additive. The bicomponent high-strength sprayed polyurethane waterproof paint has mechanical performance close to or even higher than that of a waterproof coiled material, adopts a spraying construction method, is convenient and high-efficient and greatly prolongs the service life of the waterproof material; and a solvent-free system also greatly ensures the environment-friendly requirement of the material, so that the performance is more reliable, high efficient and environment-friendly. Compared with a conventional waterproof material, the bicomponent high-strength sprayed polyurethane waterproof paint has high strength and elongation rate.

The invention provides a preparation method of solvent-free environment-friendly polyurethane automobile leather. The automobile leather comprises a surface layer and a foaming layer, wherein both the surface layer and the foaming layer are made of double-component solvent-free polyurethane; each of solvent-free environment-friendly polyurethane surface layer rein and solvent-free environment-friendly polyurethane foaming layer resin respectively used in the surface layer and the foaming layer is composed of a solvent hydroxyl mixture component A and an isocyanate component B. The specific preparation method of the automobile leather comprises the following steps: blade coating a shell fabric, drying the shell fabric, blade coating the foaming layer resin, adhering base cloth when the foaming layer resin is half-dry, curing and rolling. The automobile leather is prepared from the solvent-free environment-friendly polyurethane resin by one-step molding on a dry-method production line; the preparation method gets rid of a wet-method process flow in the traditional production process of polyurethane automobile leather and the production procedure is shortened for one half; no organic solvent is discharged, and the production process and finished products are friendly to the environment.