Method for graft polymerization of shaped article of hydrophobic synthetic polymer
AssigneeToyo Boseki Kabushiki Kaisha
InventorsKikuji Igeta, Masakatsu Ohguchi
Life of this patent
Estimating the term…
Abstract
A shaped article of hydrophobic synthetic polymer is graft polymerized uniformly and economically in a high yield, and consequently is endowed with various advantageous properties, when it is treated in an aqueous emulsified dispersion having dispersed in water an hydrophobic radical polymerization initiator, an organic solvent which is liquid at normal room temperature, naphthalene and an unsaturated monomer containing in the molecular unit thereof at least one double bond capable of radical polymerization.
Claims23
A method for the graft polymerization of a shaped article of hydrophobic synthetic polymer, which comprises treating the shaped article with an aqueous emulsified dispersion containing water, an emulsifier, a hydrophobic radical polymerization initiator, an organic solvent which is liquid at normal room temperature, naphthalene and at least one unsaturated monomer containing in the molecular unit thereof at least one double bond capable of radical polymerization, the amount of naphthalene in the dispersion being from 1 to 80% by weight, based on the weight of the organic solvent,
- with the proviso that when the unsaturated monomer contains an acidic group, the emulsifier is (1) a mixture of a nonionic surface active agent and an anionic surface active agent or (2) a nonionic-anionic surface active agent.
Dependencies are inferred from the claim text.