| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 161 | Automotive additives and sealants containing waste powder prime | US666170 | 1996-06-19 | US5710199A | 1998-01-20 | James F. Hubert; Richard A. Rinka |
| The present invention is directed to compositions for use as additives in the automotive industry, which compositions contain waste powder prime and a plasticizer selected from the group consisting of 2-ethylhexyl diphenyl phosphate, diisoheptyl phthalate, a linear phthalate based upon C.sub.7 -C.sub.9 alcohols, a mixture of esters containing a minimum of 55 percent of diesters and a maximum of 20 percent dibenzoate, a mixture of esters containing a minimum of 60 percent of diesters and a maximum of 30 percent dibenzoate and dipropylene glycol dibenzoate and automotive sealants which contain waste powder prime, a plasticizer selected from the group consisting of 2-ethylhexyl diphenyl phosphate, diisoheptyl phthalate, a linear phthalate based upon C.sub.7 -C.sub.9 alcohols, a mixture of esters containing a minimum of 55 percent of diesters and a maximum of 20 percent dibenzoate, a mixture of esters containing a minimum of 60 percent of diesters and a maximum of 30 percent dibenzoate and dipropylene glycol dibenzoate and automotive sealants; and a polymeric resin. | ||||||
| 162 | Water-based paint spray booth flood sheets and methods of reclaiming paint using the same | US371390 | 1995-01-11 | US5560860A | 1996-10-01 | William C. Walsh; Lawrence E. James |
| A composition for reclaiming paint and volatile organic paint carrier from industrial paint spray booths without increasing VOCs has been developed. The improvement over the existing booths recirculating hydrophilic based fluids, is the inclusion of a water based solution containing about 10 to about 45 per cent by weight of one or more N-alkyl pyrrolidones, about 15 to 40 percent by weight of one or more alkyl glycol mono alkyl ethers, a surfactant present in the amount of about 0.1 to 2.0 percent by weight, and the balance water. | ||||||
| 163 | Process for reusing the overspray obtained from spraying coating compositions | US201913 | 1994-02-25 | US5453460A | 1995-09-26 | Wieland Hovestadt; Jochen Bruck; Harald Blum |
| The present invention relates to a process for reusing the overspray obtained when spraying water dilutable two-component polyurethane coating compositions containing a polyisocyanate and a compound containing isocyanate reactive groups by(i) collecting the overspray and optionally diluting it with water,(ii) simultaneously with or after step (i), reacting the overspray, optionally in the presence of emulsifiers, with compounds which are more reactive with isocyanate groups than both water and the compounds containing isocyanate reactive groups and(iii) reusing the resulting aqueous solution or dispersion of the chemically modified overspray in a one- or two-component, chemically and/or physically drying coating composition, optionally after adjusting the spray viscosity of the coating compositions to a suitable spray viscosity by either removing or adding water and optionally after the addition of additives. | ||||||
| 164 | Process for recovering binder components from lacquer sludge | US54931 | 1993-04-28 | US5344851A | 1994-09-06 | Wieland Hovestadt; Jochen Bruck; Volker Schneider |
| The present invention relates to a process for recovering and recycling the organic binder components accumulating as overspray during the spraying of a solvent-containing, two-component polyurethane lacquer or a solvent-containing, moisture-curing, one-component polyurethane lacquer byi) washing the overspray out of the exhaust air of a coating plant with the aid of an aqueous medium which a) contains in dissolved or dispersed form compounds that exhibit greater reactivity towards isocyanate groups than either water or the isocyanate-reactive groups present in two-component polyurethane lacquers, and b) may contain emulsifiers,ii) isolating the chemically modified overspray formed in step (i) in the form of lacquer sludge by treatment with coagulating agents, which may be present in the aqueous medium,iii) mixing the lacquer sludge, containing fully reacted lacquer constituents, coagulating agents and water, optionally after a portion of the water is removed, with an organic solvent andiv) separating the organic phase accumulating in step iii) from the aqueous phase and insoluble-constituents which may be present and recovering the solution of modified organic binder components dissolved in the organic phase. | ||||||
| 165 | Method for removing and reclaiming excess paint from a paint spray booth | US915041 | 1992-07-15 | US5334255A | 1994-08-02 | Lawrence E. James; William C. Walsh |
| Methods for removing and reclaiming excess paint from a paint spray booth includes entraining over-sprayed paint particles in a stream of air passing though the pain spray booth and causing the entrained over sprayed paint particles to come into contact with a flowing flood sheet within the paint spray booth such that a substantial portion of the paint particles are solubilized within the flowing aqueous flood sheet and are thereby removed from the stream of air. The solubilized paint particles are then separated and collected from the aqueous flood sheet so as to be reclaimed for future use, whereas the aqueous flood sheet is then recycled to the paint spray booth after the paint particles have been separated therefrom. To permit the reclamation of paint particles, the flood sheet includes an aqueous paint carrier having at least one of an aprotic heterocyclic oxygenate, a C.sub.4 -C.sub.6, lactone or a cyclic carbonate together with at least one organic solvent. | ||||||
| 166 | Process for recovering polyurethane from polyurethane waste pastes | US865898 | 1992-04-09 | US5298128A | 1994-03-29 | Jorg Hausdorf; Bardo Anselm; Steffen Kosack |
| Polyurethane can be reclaimed from solvent-containing or solvent-free polyurethane wastage by adjusting the amount of solvent, preferably with methyl ethyl ketone; adding an emulsifier, preferably, acylpolyethyleneglycolester; then adding about twelve times the wastage weight of water; mixing, preferably for about one hour at room temperature to form an emulsion; and then expelling the solvent as a two-phase distillate using steam; separating solvent from the resulting two-phase distillate; filtering off polyurethane granular material left floating in the water residue, and drying the separated granular material. | ||||||
| 167 | Method for treating waste paint sludge | US202838 | 1988-06-03 | US4980030A | 1990-12-25 | Jeffrey C. Johnson; Andrew Slater |
| A method and apparatus are disclosed for the treatment of paint sludge and for reducing volatile organic compound emissions from a paint spraybooth operation, thereby obtaining a recyclable material for use in new coating products. In such an operation, uncured paint resins mixed with volatile organic compounds are sprayed onto an article to be painted and at least a portion of the overspray is mixed with water to form a waste stream containing water, uncured paint resin, volatile organic compounds and inorganic substances. The method includes the steps of: removing a portion of the water and liquid volatile organic compounds from the waste stream; heating the resultant sludge to volatilize the residual water and liquid volatile organic compounds and to cure the uncured paint resin; collecting the residual solids stream, and removing all of the volatilized organic compounds from the resultant stream, thereby generating a volatile organic compound-free gas effluent. The amount of volatized organic compounds removed is at least about 5% of the volatile organic compounds input to the paint spraybooth operation.The apparatus includes a waste paint stream dewatering device and an enclosed rotary screw heat exchanger maintained in an inert environment; the apparatus also provides a system for adding a scouring aggregate to the sludge before heating and for removing the aggregate after heating. Finally, the apparatus includes a separator for removing entrained solids from the resulting gas stream, and provides a system for processing the gas stream to remove all volatile organic compounds. | ||||||
| 168 | Polyisocyanurate foams from digestion products of polyalkylene terephthalate polymers and polyols | US372904 | 1982-04-29 | US4711912A | 1987-12-08 | Scott C. Snider; Alberto DeLeon |
| Polyisocyanurate foams are prepared by reacting together an organic polyisocyanate, a blowing agent, a trimerization catalyst, and a minor amount of a polyol mixture prepared by digesting polyalkylene terephthalate, particularly polyethylene terephthalate, with a polyol, especially a glycol. Laminates of such foams exhibit a high degree of fire resistance, low smoke evolution on combustion, low foam friability and high compressive strength. | ||||||
| 169 | Paint composition comprising powder paint dispersed in aqueous resin solution | US158564 | 1980-06-11 | US4312795A | 1982-01-26 | Michiichi Taguchi; Kunio Funabiki; Masao Nakazima; Hisao Nunokawa; Tadashi Ikemi; Masataka Kimura; Naoki Shibata |
| A paint composition comprising a powder paint uniformly dispersed in an aqueous solution of a water soluble carboxylated resin. Use is made of a powder paint having a mean particle size of 1-100 microns and preferably comprising a thermosetting resin as the vehicle. This paint composition contains no surfactant but, nevertheless, features high stability of the dispersion phase and can provide paint films of excellent resistance to water. This paint composition may utilize recovered waste powder paint, i.e. a mixture of differently colored powder paints, preferably with the addition of a black pigment such as carbon black. | ||||||
| 170 | Process for treating aqueous latex paint waste | US215695 | 1980-12-12 | US4312759A | 1982-01-26 | Joseph C. Sherwood; Brunbeck, Richard T. |
| A process for producing leach-resistant consolidate from the slack sludge precipitated from the flocculating of dilute aqueous latex paint waste is shown. It comprises: rapidly heating said slack sludge with agitation to a temperature which at least approaches the boiling point of the water present in said sludge; settling the resulting heated mixture into a consolidate fraction and a serum fraction; and separating said fractions. Such consolidate can be used for landfill, structural units, or dispersed as a component of a paint. | ||||||
| 171 | Process for depolymerizing waste ethylene terephthalate polyester | US647995 | 1976-01-09 | US4078143A | 1978-03-07 | Abdul-Ilah Malik; Elmer Edwin Most |
| Recovery of ethylene terephthalate polymer from waste material is accomplished by glycolysis of the polyester to form bis-(2-hydroxyethyl)terephthalate for repolymerization. Formation of objectionable diethylene glycol is inhibited when glycolysis is accomplished by heating the polyester in a reaction mixture with bis-(2-hydroxyethyl)terephthalate, ethylene glycol and sodium acetate trihydrate, and water is introduced continuously into the reaction mixture during depolymerization of the polyester. | ||||||
| 172 | Polyisocyanate prepolymers from scrap polyester and polyurethane foam products obtained therefrom | US711831 | 1976-08-05 | US4048104A | 1977-09-13 | Glenn R. Svoboda; John T. Suh; William L. Carlstrom; Gary L. Maechtle |
| Polyisocyanate prepolymers for use in preparing polyurethane products elastomers, adhesives and foams, are prepared by combining (1) organic polyisocyanate with (2) polyols which are the hydroxyl-terminated digestion products of (a) waste or scrap polyalkylene terephthalate polymers and (b) organic polyols. Polyurethane products resulting from the polyisocyanate prepolymers exhibit useful and unexpected properties. | ||||||
| 173 | Process for the degradation of high polymer substances | US528081 | 1974-11-29 | US3979482A | 1976-09-07 | Tsutomu Kagiya; Kunihiko Miyoshi; Katsuo Takemoto |
| The oxidation of a high polymer such as polyvinyl chloride or polyolefin, which oxidation causes cleavages of carbon-carbon bonds in the main chains thereof to degrade the high polymer into lower molecular weight compounds, is remarkably accelerated when the high polymer is impregnated with a halogenated compound having a carbonyl group or carbonyl groups and exposed to sunlight or is irradiated with ultraviolet radiation in an ambient atmosphere of oxygen or a gas containing oxygen. This acceleration of the oxidation makes possible easy destruction of a shaped article made of such a high polymer. | ||||||
| 174 | Process for disposing of halogen-containing plastics | US26846672 | 1972-07-03 | US3852223A | 1974-12-03 | BOHME R; WESSLING R |
| A process for disposing of halogen-containing plastic comprising preheating such plastic at dehydro-halogenating temperatures in the presence of a catalytic amount of a Lewis acid and recovering the halogen-containing by-products.
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| 175 | Method of depolymerizing poly-ethylene terephthalate | US3776945D | 1971-11-16 | US3776945A | 1973-12-04 | LIGORATI F; AGLIETTI G; NOVA V |
| DIMETHYL TEREPHTHALATE AND ETHYLENE GLYCOL ARE RECOVERED FROM POLYETHYLENE TEREPHTHALATE BY DEPOLYMERISING IN METHANOL, INSTANTANEOUS EVAPORATION AFTER REMOVAL OF THE METHANOL, AND CONDENSATION OF THE VAPOURS IN COLD METHANOL.
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| 176 | Method of reclaiming primer paint overspray sludge | US3736277D | 1971-04-21 | US3736277A | 1973-05-29 | BENDER H |
| PRIMER PAINT OVERSPRAY SLUDGE IS WASHED, DRIED AND ITS THERMOSETTING RESIN BINDER FULLY CURED. THE DRY SOLIDS ARE GROUND TO FORM FILLER PARTICLES OF 200 MESH OR SMALLER. THEY ARE THEN MIXED WITH A VISCOUS LIQUID THERMOSETTING GRINDING RESIN AND FURTHER COMMINUTED UNTIL AT LEAST 90% OF THE PARTICLES HAVE BEEN REDUCED TO ONE TO FIVE MICRONS. THIS GRINDING RESIN-ULTRAFINE FILLER PARTICLE MIXTURE IS MIXED WITH ADDITIONAL THERMOSETTING BINDER RESIN AND SOLVENT TO OBTAIN A SUITABLE SPRAYABLE PRIMER PAINT.
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| 177 | Process for the manufacture of shaped articles,such as fibers,filaments and films,of polyesters | US3480586D | 1966-09-16 | US3480586A | 1969-11-25 | FORSTER PAUL-FRIEDRICH; KURZKE HERBERT; SATTLER HELMUT; SCHNOCK GUNTER |
| 178 | Two-stage process for depolymerizing polyesters | US24279062 | 1962-12-06 | US3257335A | 1966-06-21 | WHITFIELD JR HAROLD BARNARD; EDWARD HOFFMAN FRANK; EDWARD HOLCOMB CHARLES; ROBERT WINTER FREDERICK |
| 179 | Process of reclaiming linear terephthalate polyester | US14523961 | 1961-10-16 | US3222299A | 1965-12-07 | MACDOWELL JOHN T |
| 180 | Method of treating polyethylene terephthalate scraps | US2162460 | 1960-04-12 | US3108082A | 1963-10-22 | LOTHAR RIEHL; ERHARD SIGGEL |
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