Wasserloesliches Polyaminharz

摘要

1277655 Modified epoxy resin DOW CHEMICAL CO 26 June 1969 32237/69 Heading C3B [Also in Division D2] Water-soluble cationic resins are prepared by (A) adding a diglycidyl ether of formula in which R is H, CH 3 or C 2 H 5 and M = 0-6 or of formula in which each B is a C 12-18 aromatic radical of a bisphenol and n is 0-2, slowly to an alkylene polyamine: NH 2 -(CaH 2 aN) b -H in which a is 2-4 and b is 1-5. Addition is carried out at 25-100‹ C. at a ratio of 2À8-10 moles of amine per mole of diglycidyl ether. A watersoluble product is obtained which is an aminoether containing 1À2-3À0 moles of alkylenepolyamine per mole of glycidyl ether. (B) the aminoether prepared is then condensed at 30-50‹ C. in 0À4-1À5 moles of epichlorohydrin per amine hydrogen. Preferred diglycidyl ethers are diglycidyl ethers of polyglycols having epoxide equivalents of 305-335 and diglycidyl ethers of bisphenol A having an epoxide equivalent weight of 170-180. Examples of alkylene polyamines are triethylenetetramine and pentaethylenehexamine. Uses.-Wet strength additives for paper.