导师
发表于 2025-3-28 14:54:25
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无法解释
发表于 2025-3-28 19:45:30
Review of Wave Breaking in Shallow WaterPhase-transfer catalyst systems have been deeply concerned with the various aspects of polymer chemistry in recent years. Imai et al showed that phase-transfer catalysts like crown ethers or ammonium salts were very effective in condensation polymerizations.
蜿蜒而流
发表于 2025-3-28 23:20:55
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Flawless
发表于 2025-3-29 05:24:57
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TEM
发表于 2025-3-29 10:11:49
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干旱
发表于 2025-3-29 13:51:29
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Canopy
发表于 2025-3-29 18:01:28
Chemical Modification of Chloromethylated Polystyrene with Phosphine Oxides Using Phase-Transfer Catlogy .. Chemical modification is an important procedure for the preparation of polymeric reagents. Phase transfer catalysis which has been widely used in organic chemistry, has found an increasing number of applications in the chemical modification of polymers having reactive functional groups, over the past few years ..
独轮车
发表于 2025-3-29 20:49:03
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jovial
发表于 2025-3-30 00:20:17
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喷油井
发表于 2025-3-30 06:06:23
Synthesis of Ultrahigh Molecular Weight Nylon 4 with Onium Salt and Crown Ether-Containing Catalystspreparation, physico-chemical characterization, and utilization of the polymer. The great interest in this polymer is due to the fact that nylon 4 textile fibers combine the good strength properties of nylon 6 or 66 with the hydrophilicity of cotton..