摘要:
Granules of azobisamidine salt can be produced by granulating a powder of azobisamidine salt using a limited amount of water or a mixture of water and a water-soluble organic solvent such as methanol are convenient in handling without deteriorating the quality and can be used as a water-soluble polymerization initiator.
摘要:
Granules of azobisamidine salt can be produced by granulating a powder of azobisamidine salt using a limited amount of water or a mixture of water and a water-soluble organic solvent such as methanol are convenient in handling without deteriorating the quality and can be used as a water-soluble polymerization initiator.
摘要:
yclic azoamidine compounds expressed by the following general formula and salt thereof are disclosed. wherein R denotes a methyl group or an ethyl group, and R 1 ,R 2 ,R 3 and R 4 independently denote a lower alkyl group having one to four carbon atoms or a hydrogen atom, provided that a case where R',R 2 ,R 3 and R 4 are all hydrogen atoms is excluded. The cyclic azoamidine compounds and their salts are useful as polymerization initiators in the production of polymer compounds.
摘要:
A stable aqueous suspension containing an organic azo compound as polymerization initiator in fine particles, containing substantially no organic solvent and containing no foam which damages dispersing stability of the aqueous suspension and retards polymerization rate can be formed by dissolving an organic azo compound in an organic solvent, emulsifying the resulting solution by adding water and a dispersing agent A and a dispersing agent B therto with stirring, and removing the organic solvent from the emulsified liquid preferably under reduced pressure.