| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 221 | Aminoplast dispersions and polyurethanes prepared therefrom | US124161 | 1980-02-25 | US4282135A | 1981-08-04 | Kuno Wagner |
| A stable dispersion of an aminoplast which is obtained by a process which comprises condensing ammonia hydrazine or an organic compound having a molecular weight of from about 50 to about 400 and which contains at least two groups selected from the group consisting of --NH.sub.2 and --NH-- with benzoquinone or a compound of the formula R--CO--R' in which R and R' stand for the same or different radicals selected from the group consisting of hydrogen C.sub.1 -C.sub.4 alkyl groups which may carry chlorine substituents, C.sub.2 -C.sub.4 -alkenyl groups, C.sub.6 -C.sub.10 aryl groups, C.sub.7 -C.sub.10 aralkyl groups, C.sub.5 -C.sub.10 cycloalkyl group and semi-acetals obtained by reacting said carbonyl compounds with monohydric or dihydric aliphatic alcohols having one to ten carbon atoms in an organic polyhydroxyl compound having a molecular weight of from about 250 to about 14000 as the reaction medium. | ||||||
| 222 | Polyglutaraldehyde microspheres | US21988 | 1979-03-19 | US4267235A | 1981-05-12 | Alan Rembaum; Shlomo Margel |
| Suspension polymerization of aqueous glutaraldehyde in basic conditions in presence of surfactants such as isobutoxy acrylamide copolymers and/or cross-linking agents yield cross-linked, water insoluble glutaraldehyde polymer microspheres ranging in size from 200 A to 10.mu.. Addition of fluorochromes, e.g., FITC, during polymerization yields microspheres of high fluorescent intensity and addition of a suspension of metal containing particles such as Fe.sub.3 O.sub.4 during polymerization yields magnetic microspheres. Immunopolyglutaraldehyde microspheres can be obtained by interacting the polyglutaraldehyde microspheres with antibodies. The immunomicrospheres were used to label and separate cell subpopulations. The labeling specificity is considerably improved by increasing the amount of isobutoxy polyacrylamide incorporated in the microspheres. | ||||||
| 223 | Aminoplast dispersions and polyurethanes prepared therefrom | US464099 | 1974-04-25 | US4225481A | 1980-09-30 | Kuno Wagner |
| A stable dispersion of an aminoplast which is obtained by a process which comprises condensing ammonia, hydrazine or a organic compound having a molecular weight of from about 50 to about 400 and which contains at least two groups selected from the group consisting of --NH.sub.2 and --NH-- with benzoquinone or a compound of the formula R--CO--R' in which R and R' stand for the same or different radicals selected from the group consisting of hydrogen C.sub.1 -C.sub.4 alkyl groups which may carry chlorine substituents, C.sub.2 -C.sub.4 -alkenyl groups, C.sub.6 -C.sub.10 aryl groups, C.sub.7 -C.sub.10 aralkyl groups, C.sub.5 -C.sub.10 cycloalkyl groups or semi-acetals obtained by reacting said carbonyl compounds with monohydric or dihydric aliphatic alcohols having one to ten carbon atoms in an organic polyhydroxyl compound having a molecular weight of from about 250 to about 14000 as the reaction medium. | ||||||
| 224 | Continuous process for the production of aqueous urea-formaldehyde solutions | US667702 | 1976-03-17 | US4065421A | 1977-12-27 | Charles L. Allyn; James C. Manlove; Gerald M. Chang; Robert C. Burmark |
| This invention relates to a process for the continuous production of aqueous urea-formaldehyde solutions having a mol ratio of formaldehyde to urea ranging from about 4.0 to about 6.0 and having a total solids content ranging from about 60% to about 85% by weight. This process utilizes a single multiple tray absorption column through which is passed the gaseous product from a formaldehyde converter counter current to a flow of aqueous urea solution. The column is maintained at a temperature ranging from about 40.degree. C to about 80.degree. C and dilute aqueous base is added at several points along the tower. Formaldehyde combines with the urea in the solution during their respective passages through the column to form the final product. A portion of the final product is circulated through the lower portion of the column. | ||||||
| 225 | Process for the production of film forming synthetic resins for hair fixatives | US727569 | 1976-09-28 | US4035358A | 1977-07-12 | Hans-Albrecht Meyer-Stoll; Johannes Wollner; Hans-Heinz Schittek |
| Process for the production of film forming synthetic resins for hair fixative compositions by reacting a methylolated 5,5-dialkylhydantoin containing 1-5 carbon atoms in each alkyl group at an elevated temperature in the presence of a bifunctional acid amide and/or amine. Hair fixative compositions containing 2-10% by weight of the resin product as the major or sole resin compound. | ||||||
| 226 | Process for the production of film forming synthetic resins for hair fixatives | US727570 | 1976-09-28 | US4035339A | 1977-07-12 | Hans-Albrecht Meyer-Stoll; Johannes Wollner; Hans-Heinz Schittek |
| Process for the production of film forming synthetic resins for hair fixative compositions by reacting a methylolated 5,5-dialkylhydantoin containing 1-5 carbon atoms in each alkyl group at an elevated temperature in the presence of a bifunctional acid amide and/or amine. Hair fixative compositions containing 2-10% by weight of the resin product as the major or sole resin compound. | ||||||
| 227 | Aldehyde-polyamine or aldehyde-polyamine- aromatic compound condensation resin adsorbent for heavy metals and heavy metallic compounds | US42468073 | 1973-12-14 | US3892709A | 1975-07-01 | ODA NAKAAKI; IWASA SHOZO; IDOHARA MITSURU; HORIE YOSHIO; FUKUI TAKEO; TAKASAKA NAOMICHI |
| This invention relates to novel aldehyde-polyamine or aldehydepolyamine-aromatic comdensation resin adsorbents for heavy metals and heavy metallic compounds.
|
||||||
| 228 | Aminotriazine-aldehyde resins and process for preparation | US23296472 | 1972-03-08 | US3839289A | 1974-10-01 | WAITKUS P |
| A polyamino triazine, such as melamine or benzoguanamine, etc., is reacted with an aldehyde such as formaldehyde, and a vinyl compound containing two active hydrogens capable of reaction with an aldehyde or alkylol group in such a manner as not to react with or destroy the vinyl group. Typical vinyl-containing compounds are acrylamide, diacetone acrylamide, allyl amine, etc. The resultant resins are capable of being cured by free radical catalysts through the vinyl group. The resulting crosslinked products have excellent electrical properties and are particularly useful as molding compositions for encapsulating electrical parts, and also as binders in fiber-reinforced plastics.
|
||||||
| 229 | Condensation products of aldehydes or ketones with diamines and monoamines | US3461100D | 1964-07-02 | US3461100A | 1969-08-12 | PAYNE JIMMIE S JR; GARDNER PETE D |
| 230 | Aldehydes and ketones of trifluoromethylfurans | US3439000D | 1965-10-06 | US3439000A | 1969-04-15 | WYCKOFF KENNETH K; BAMBURY RONALD E; TENNENT DAVID M |
| 231 | Fluorescent aldehyde-triazinyl stilbino condensation products | US26219363 | 1963-03-01 | US3327018A | 1967-06-20 | D ALELIO GAETANO F |
| 232 | Corrosion inhibition | US30015163 | 1963-08-06 | US3265512A | 1966-08-09 | DICKSON WOODROW J; JENKINS FRED W |
| 233 | Corrosion preventing method and composition | US50503965 | 1965-10-24 | US3262791A | 1966-07-26 | DICKSON WOODROW J; JENKINS FRED W |
| 234 | Extraction of precious metal compounds from an aqueous solution | US67913257 | 1957-08-20 | US3006756A | 1961-10-31 | THEODOR VOLKER; HERBERT ZIMA |
| 235 | Apparatus for the continuous fabrication of a labile resin | US42217654 | 1954-04-09 | US2858195A | 1958-10-28 | OTTO VIELI |
| 236 | Composition comprising furfural-ketone-amine reaction products and an epoxy resin | US44876654 | 1954-08-09 | US2839487A | 1958-06-17 | ROSAMILIA PETER L; HARVEY MORTIMER T |
| 237 | Method for reacting acetone-formaldehyde condensate with aniline and acidic agent | US26625252 | 1952-01-12 | US2766218A | 1956-10-09 | HARVEY MORTIMER T; ROSAMILIA PETER L |
| 238 | Method for increasing the viscosity of liquid resinous organopolysiloxanes | US14382450 | 1950-02-11 | US2579332A | 1951-12-18 | NELSON JR HENRY C |
| 239 | Fluorescent resins and methods of making same | US2270248 | 1948-04-22 | US2541184A | 1951-02-13 | CHARLES ACKERMAN RAYMOND |
| 240 | Resinous condensation products from an aldehyde or a ketone and an n-alkenylarylamine | US875348 | 1948-02-16 | US2495890A | 1950-01-31 | DANFORTH JOSEPH D |
QQ群二维码
意见反馈
意见反馈