| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 121 | Continuous process for the hydrolytic production of polycaprolactam having a low-monomer and low-dimer content | US167055 | 1980-07-09 | US4327208A | 1982-04-27 | Gunter Lehr; Uwe Hucks; Hugo Vernaleken; Werner Nielinger; Erhard Tresper |
| A process for the production of polyamide-6 or corresponding copolyamides by hydrolytic polymerization wherein the low molecular weight secondary reaction products and the unreacted .epsilon.-caprolactam are separated off from the polyamide melt and directly condensed on the .epsilon.-caprolactam melt to be polymerized. | ||||||
| 122 | Preparation of shaped articles of poly(metaphenylene isophthalamide) | US108794 | 1979-12-31 | US4283361A | 1981-08-11 | Ruskin Longworth |
| Process for the preparation of shaped articles of poly(metaphenylene isophthalamide) by simultaneously heating poly(metaphenylene isophthalamide) and applying moderately elevated pressures. | ||||||
| 123 | Method for producing polylaurolactam powder compositions for the coating of metals at high temperatures and their use in the manufacture of pigmented powders by the dry-blend process | US96416 | 1979-11-21 | US4273919A | 1981-06-16 | Rainer Feldmann; Karl-Adolf Muller; Karl-Heinz Hornung |
| A process for preparing coating powders based on polylaurolactam for the vitrification coating process beginning with polylaurolactam granulates obtained by polymerizing laurolactam under internal pressure in the presence of 2 to 10% by wt. of water and 0.3 to 0.7% by wt. of phosphoric acid at temperatures between 265.degree. and 300.degree. C., in the absence of chain stabilizers, and which have a relative viscosity of between 1.50 and 1.80. After precooling to temperatures between -50.degree. and 0.degree. C., the granulates are ground and then graded. Extraction with methanol or ethanol is carried out prior to grinding or grading. Pigments are added to the monomerous laurolactam or to the polylaurolactam in the molten state prior to granulation. The powders are especially well suited to manufacture colored powders by the dry-blend process. | ||||||
| 124 | Method for manufacture of finely powdered polyamide resin | US854216 | 1977-11-23 | US4146704A | 1979-03-27 | Terunobu Seki; Kosei Ri |
| A finely powdered polyamide resin is manufactured by a method which comprises dissolving a polyamide resin in a water-containing isopropyl alcohol under increased pressure at temperatures of 150.degree. to 155.degree. C. and subjecting the resultant solution to vigorous agitation while cooling for thereby educing therein finely divided polyamide resin particles of diameters of the order of microns. | ||||||
| 125 | Steam-polymer separation apparatus | US880075 | 1978-02-22 | US4134736A | 1979-01-16 | Leon F. Hammond, Jr. |
| The spiral agitator in a vessel for separating steam from polymer is modified by providing holes in the ribbon flight at locations adjacent to the locations where the ribbon flight is supported by struts for the purpose of allowing the polymer to flow through the holes and sweep the area directly behind the struts to prevent gel buildup in these locations. | ||||||
| 126 | Densification of polypyrrolidone | US790777 | 1977-04-25 | US4130521A | 1978-12-19 | Kiyoshi Katsumoto; Edward L. Nimer |
| Moisture-containing nylon-4 powder is treated under heat and pressure to produce a solid material of bulk density suitable for melt-spinning. | ||||||
| 127 | Process and apparatus for removing evaporable components from polyamide melts | US643385 | 1975-12-22 | US4128453A | 1978-12-05 | Dieter Angerer; Peter Freund; Werner Hansel; Fritz Wilhelm |
| An apparatus and process for removing undesired monomers and oligomers from polyamide melt at subatmospheric pressure by passing steam through the melt to absorb the undesired components and carry them away. Various constructions are disclosed for vigorously intermixing the gas with the melt in which the gas is passed through a foraminous surface over which a thin film of melt flows, and a rotating agitator, spaced less than 50 mm from the surface, mixes the gas with the melt film. In a preferred form of the invention the rotating shaft comprising the agitator carries screw threads and serves as a conveyor for discharging treated melt from the pressure vessel in which the process is carried out. | ||||||
| 128 | Magnetic recording medium supported on aromatic polyamide | US678365 | 1976-04-19 | US4112187A | 1978-09-05 | Toshiyuki Asakura; Masaaki Itoga; Takeshi Hayakawa; Masamitsu Tanimura |
| An improved magnetic recording medium comprising a flexible support consisting of at least about 70 mol % of p-oriented aromatic polycarbonamide units. The polycarbonamide may include substituent groups on the aromatic nuclei. The support has a density of more than about 1.41 g/cm.sup.3 at 25.degree. C and 0% relative humidity, and a tensile modulus higher than about 800 kg/mm.sup.2 in at least one direction, combined with a thin layer of magnetically susceptible material deposited electrically or dispersed in a nonmagnetic binder. The magnetic recording medium in this invention shows excellent running performance and has superior dimensional stability both thermally and hygroscopically. | ||||||
| 129 | Extraction of polylactams | US392243 | 1973-08-28 | US4051113A | 1977-09-27 | Ernst Kissel; Eckart Neumann; Ernst Guenther; Guenter Valentin; Werner Hoerauf |
| The continuous countercurrent extraction of polylactam granules with hot water in an extraction zone for the removal of monomer and/or oligomers, the extraction zone being subdivided into subzones by at least one heating zone. The density of the extract-containing water differs by at least 0.0002 between the subzones. | ||||||
| 130 | Process for preparing polypyrrolidone wherein polypyrrolidone is washed with 2-pyrrolidone | US559293 | 1975-03-17 | US4013626A | 1977-03-22 | Kiyoshi Katsumoto; Richard A. Wuopio |
| An improved process for the production of poly-2-pyrrolidone in which the solid product is washed with monomer to remove the catalyst and the monomer wash, containing catalyst and monomer, is recycled for further polymerization reaction. | ||||||
| 131 | Process for the production of polyamides | US524272 | 1974-11-15 | US3989677A | 1976-11-02 | Bert Brassat; Rolf Brockmann |
| An improved process for the production of polyamides of low extract content by the activated anionic polymerisation of at least one lactam containing at least 5 ring members at temperatures above the melting point of the polyamide in a continuously working polymerisation apparatus, optionally followed directly by shaping, the improvement comprises treating the polyamide melt obtained by polymerising said lactam in said polymerisation apparatus with water or steam and subsequently freeing it from volatile constituents by evaporation before the polyamide melt is discharged into the open. | ||||||
| 132 | Polymerization apparatus | US37293573 | 1973-06-25 | US3906984A | 1975-09-23 | RICH JOHN THEODORE; RUSSELL JOHN PERCIVAL |
| Continuous polymerization apparatus including a vessel containing a melt pool of polymer and an open-ended conduit and a separator for streams of molten polymer associated with steam flows into the pool while steam passes through the center of the conduit. The open end of the conduit is shaped and located so that steam is separated from the molten polymer and can be withdrawn while freefall of the molten polymer into the pool is substantially prevented.
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| 133 | Apparatus for the continuous removal of volatile constituents from polyamides | US3477094D | 1965-04-30 | US3477094A | 1969-11-11 | MAAHS PAUL; MATTHIES HANS-GEORG; WENGER FRIEDRICH |
| 134 | Process for the continuous removal of monomeric and oligomeric fractions from nitrogen containing polymers | US3447583D | 1966-05-18 | US3447583A | 1969-06-03 | HERMANN KARL-HEINZ; SCHNELL HERMANN; SCHNEIDER RUDOLF; SPOTT GEORG |
| 135 | Extraction tube for extracting lower molecular components from granulated polyamides | US3423183D | 1967-02-16 | US3423183A | 1969-01-21 | GOETZKE JUERGEN |
| 136 | Apparatus and process for drying particulate polymer | US60023566 | 1966-12-08 | US3411215A | 1968-11-19 | FIELDS REUBEN T |
| 137 | Process for drying polymers | US34290264 | 1964-02-06 | US3307271A | 1967-03-07 | LANNY SIMPSON DONALD |
| 138 | Production of block-graft copolymers from polyolefines and synthetic polyamides | US14329261 | 1961-10-06 | US3261885A | 1966-07-19 | HANS CRAUBNER; GERHARD ILLING |
| In a process for the production of block-graft polymers, a mixture of (a) one or more polyolefines or copolymers of olefines with other unsaturated monomers and (b) one or more synthetic linear polyamides is homogenized at a temperature between 50 DEG and 350 DEG C. with addition of 0,05 to 10% by weight, with reference to the total weight of the mixture of all components of a free radical-forming catalyst. Specified polyolefines are those derived from ethylene, propylene, styrene, iso-butylene, butene-1 and butene-2 and optionally butadiene, isoprene, acrylic acid, methacrylic acid, esters of acrylic and methacrylic acid, acrylonitrile, acrylamide, methacrylamide, vinyl chloride, vinylidene chloride, vinyl acetate, vinyl propionate, a -methyl styrene, vinyl toluenes and vinyl isobutyl ether. Specified catalysts are cumene hydroperoxide, dicumyl peroxide, t-butyl hydroperoxide, di-t-butyl peroxide, 2:5-di-t-butyl-peroxy-2:5-dimethyl hexane, dibenzoyl peroxide, lauroyl peroxide, t-butyl perbenzoate, azo-bis-iso-butyronitrile and azo disulphonates which may be dissolved in benzene, toluene, xylene, dioxane, cyclohexane, butanone, dimethyl formamide, carbon tetrachloride or tetrahydrofurane and hydrogen peroxide, sodium peroxide and ammonium persulphate. The examples describe the preparation of block-graft polymers from:-(1) polyethylene and poly-S -caprolactam; (2) polyethylene and polyhexamethylene adipamide; (3) polypropylene and poly-S -caprolactam; (4) polypropylene and poly-caprylic lactam; (5) polypropylene and polyhexamethylene adipamide; (6) polypropylene and polyhexamethylene sebacamide; (7) polystyrene, polyethylene and poly-S -caprolactam; (8) poly-iso-butylene, polyethylene and poly-S -caprolactam and (9) an acrylonitrilestyrene copolymer and poly-S -caprolactam. | ||||||
| 139 | Continuous extraction of poly-e-caproamide | US23737762 | 1962-11-13 | US3245964A | 1966-04-12 | WIESNER ALBERT H; LE NOIR FRED W; APOSTLE BASIL G |
| 140 | Polymerisation apparatus | US31689363 | 1963-10-17 | US3241296A | 1966-03-22 | WARD RAMSEY KEITH |
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