Polymer crosslinking agent, and polymer and composition using polymer crosslinking agent
A polymer cross-linking agent and high-molecular polymer technology, applied in the field of new polymer cross-linking agents, can solve the problems of insufficient ester oil affinity, inability to swell, white turbidity, etc., and achieve stable transparency and affinity. high effect
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[0139] The production method based on group transfer polymerization is exemplified below, but other polymerization methods can also be used for the production method, and are not limited to the following methods.
[0140] A catalyst and a solvent were added to a fully dried three-necked flask. Then, after adding an initiator and mixing, monomers (5), (6) and (7) were dripped and stirred using the dropping funnel. The reaction solution is cooled and maintained at an appropriate temperature according to the degree of heat generation. After the dropwise addition, the mixture was stirred until the monomers were consumed, and a reaction terminator was added to complete the reaction. After the reaction, water washing is performed as necessary, and the solvent is distilled off under reduced pressure.
[0141] The order of adding the catalyst, solvent, initiator, and monomer in the group transfer polymerization can be selected in an appropriate order depending on the situation. For...
Embodiment 1
[0191] 100 mg of tetrabutylammonium m-chlorobenzoate dried under reduced pressure was added to the three-necked flask, and 125 mL of THF was added and dissolved. Under a nitrogen atmosphere, 2.18 g of dimethylketenemethyltrimethylsilyl acetal was added, and the monomer mixture (stearyl methacrylate (SMA) 50 g, 2-ene methacrylate) was added dropwise over 30 minutes. 6.5 g of propoxy ethyl ester, and 50 g of monomer (a) represented by the following formula. After further stirring at room temperature for 1 hour, 100 mL of toluene was added, followed by washing with water three times. The organic phase was separated and dehydrated with sodium sulfate. After filtration, the solvent was distilled off under reduced pressure at 125° C. for 1 hour to obtain the target polymer crosslinking agent. according to 1 In the H-NMR spectrum, a structure represented by the following formula (8) having an unsaturated bond in the side chain was confirmed. figure 1 for 1 The overall picture of...
Embodiment 2
[0196] 100 mg of tetrabutylammonium m-chlorobenzoate dried under reduced pressure was added to the three-necked flask, and 125 mL of THF was added and dissolved. Under a nitrogen atmosphere, 2.18 g of dimethyl ketene methyl trimethylsilyl acetal was added, and the monomer mixture (50 g of dodecyl methacrylate (DMA), 2-methacrylic acid 2- 6.5 g of allyloxyethyl ester, and 50 g of the monomer (a) represented by the above formula. After further stirring at room temperature for 1 hour, 100 mL of toluene was added, followed by washing with water three times. The organic phase was separated and dehydrated with sodium sulfate. After filtration, the solvent was distilled off under reduced pressure at 125° C. for 1 hour to obtain the target polymer crosslinking agent. according to 1 In the H-NMR spectrum, a structure represented by the following formula (9) having an unsaturated bond in the side chain was confirmed. In addition, the number average molecular weight and polydispersit...
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