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JPS4881884A |
A method for the preparation of omega lactams is disclosed, more particularly epsilon caprolactam or a precursor thereof (such as cyclohexanone oxime), using as the starting material a cyclomethylene ketene, with the simultaneous formati...
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JPS4881883A |
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JPS4835271B1 |
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JPS4878192A |
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JPS4878193A |
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JPS4878191A |
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JPS4876845A |
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JPS4876885A |
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JPS4876844A |
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JPS4876847A |
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JPS4875585A |
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JPS4872181A |
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JPS4831116B1 |
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JPS4830621B1 |
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JPS4830620B1 |
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JPS4829395B1 |
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JPS4861491A |
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JPS4856666A |
1366187 Pyrrolidinone SUN RESEARCH & DEVELOPMENT CO 24 Oct 1972 [1 Nov 1971] 48914/72 Heading C2C 2-Pyrrolidinone is prepared by reacting succinonitrile, in an aqueous solution and in the absence of added ammonia, with H 2 in the presenc...
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JPS4854095A |
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JPS4852762A |
1413524 Lactam-phenol complexes GAF CORP 20 Oct 1972 [29 Oct 1971] 48426/72 Heading C2C Novel lactam-phenol complexes having the general formula wherein n is 3, 4 or 5; m is 2, 3, 4 or 5; y is 1,2 or 4; z is 1 or 2; W 1 is hydrogen, alky...
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JPS4821958B1 |
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JPS4816515B1 |
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JPS4816517B1 |
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JPS4816516B1 |
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JPS4815952B1 |
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JPS4815955B1 |
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JPS4815314B1 |
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JPS4815316B1 |
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JPS4815315B1 |
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JPS4814307B1 |
1,252,172. Hydrocyclones; separation of solvent from a solution of a solid organic compound by evaporation. STAMICARBON N.V. 27 Feb., 1969 [28 Feb., 1968], No. 10645/69. Headings BIB and B2P. In a process for removing an organic compound...
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JPS4813559B1 |
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JPS4813557B1 |
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JPS4813558B1 |
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JPS4812755B1 |
Laurolactam is purified by crystallization from solution in a solvent mixture of acetonitrile and water. The water content of the solvent mixture does not exceed 45 percent. Laurolactams thus purified are useful in the preparation of pol...
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JPS4812754B1 |
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JPS4829695A |
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JPS4826754A |
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JPS4810798B1 |
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JPS4810796B1 |
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JPS4810797B1 |
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JPS4810476B1 |
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JPS4810478B1 |
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JPS4810477B1 |
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JPS4810475B1 |
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JPS4744232B1 |
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JPS4710715B1 |
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JPS4631538B1 |
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JPS4625387B1 |
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JPS468856B1 |
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JPS4537023B1 |
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