首页>
外国专利>
method for condensation of aniline and formaldehyde under formation of polyaminemeng systems with a high and a low polyaminegehalte diaminodefenylmethaangehalte oligomers.
method for condensation of aniline and formaldehyde under formation of polyaminemeng systems with a high and a low polyaminegehalte diaminodefenylmethaangehalte oligomers.