WET STRENGTH ADDITIVES FOR CELLULOSIC PRODUCTS

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 bi...

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Bibliographische Detailangaben
Hauptverfasser:	JUAN LONGORIA, GREENE W. STROTHER JR
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON IMPREGNATING OR COATING OF PAPER MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PAPER NOT OTHERWISE PROVIDED FOR PAPER-MAKING PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D PRODUCTION OF CELLULOSE PULP COMPOSITIONS TEXTILES THEIR PREPARATION OR CHEMICAL WORKING-UP TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G
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Beschreibung
Zusammenfassung:	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.