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The synthetic method of polyamide polyamine resin

A technology of polyamide polyamine resin and synthesis method, which is applied in the direction of non-fibrous pulp addition, papermaking, coating, etc., can solve the problems of fluctuations in moisture content of paper webs, insufficient softness of paper, and decline in paper quality, and achieve Good base paper quality, improved properties, reduced corrosion effects

Active Publication Date: 2018-12-25
佛山市帕里达新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The water permeability of the felt becomes poor at the end of use, causing the moisture content of the paper web to fluctuate greatly and causing application problems
When the paper is bonded to the drying cylinder, the rewet soft coating is easily washed off, causing poor creases, resulting in reduced paper quality or even waste products
Although the hard coating has good water resistance, the softness of the paper obtained is not enough

Method used

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  • The synthetic method of polyamide polyamine resin
  • The synthetic method of polyamide polyamine resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Weigh 146 grams of adipic acid (1.0 mol) and 360 grams of deionized water into the four-necked flask, stir to form a slurry, vacuumize and feed nitrogen, then add 52.6 grams of diethylenetriamine (0.51mol), 60.2 grams of N -2-Aminoethyl-1,3-propanediamine (0.50mol), heat up to 180°C by electric heating, keep warm for 2 hours, collect about 265 grams of water released during the reaction, add 220 grams of water to distill out the polyamide intermediate body, its index is that the solid content is 50%, the viscosity is 130cps, and the pH is 10.8.

[0029] 100 g (0.227 mol) of the above-mentioned polyamide aqueous solution, 26.4 g (0.227 mol) of N,N-tetramethylethylenediamine, 125 g of deionized water, and 0.1 g of potassium carbonate were heated to 38° C. during stirring, and dripped Add quaternized cross-linking agent, including 16.5 g (0.114 mol) of epichlorohydrin, 10.5 g (0.114 mol) of dichloroethyl ether, add dropwise for 1 h, then raise the temperature to 63 ° C, ke...

Embodiment 2

[0031] Weigh 146 grams of adipic acid (1.0 mol) and 250 grams of deionized water into a four-necked flask, stir to form a slurry, vacuumize and feed nitrogen, then add 62.8 grams of diethylenetriamine (0.61 mol), 48.1 grams of N -2-Aminoethyl-1,3-propanediamine (0.40mol), heat up to 175°C by electric heating, keep it warm for 2.5h, collect about 285 grams of water released during the reaction, add 220 grams of water to distill out the polyamide Intermediate, its index is that solid content is 50%, viscosity is 380cps, and pH is 10.5.

[0032] 100 grams (0.227 mol) of the above-mentioned polyamide aqueous solution, 14.2 grams (0.122 mol) of N,N-tetramethylethylenediamine, 140 grams of deionized water, and 0.1 g of potassium carbonate were heated to 32 ° C during the stirring process, and dripped Add quaternized cross-linking agent, including 13.7 g (0.141 mol) of epichlorohydrin, 14.0 g (0.098 mol) of dichloroethyl ether, add dropwise for 1 h, then raise the temperature to 55 °...

Embodiment 3

[0034] Weigh 146 grams of adipic acid (1.0 mol) and 120 grams of deionized water into a four-necked flask, stir to form a slurry, vacuumize and feed nitrogen, then add 42.5 grams of diethylenetriamine (0.41mol), 77.0 grams of N -2-Aminoethyl-1,3-propanediamine (0.60mol), heat up to 160°C by electric heating, keep it warm for 3 hours, collect about 236 grams of water released during the reaction, add 225 grams of water to distill out the polyamide intermediate Body, its index is that the solid content is 50%, the viscosity is 670cps, and the pH is 9.7.

[0035] 100 g (0.227 mol) of the above-mentioned polyamide aqueous solution, 45.2 g (0.390 mol) of N,N-tetramethylethylenediamine, 130 g of deionized water, and 0.08 g of sodium carbonate were heated to 45° C. during stirring, and dripped Add quaternized cross-linking agent, including 14.7 grams (0.160 mol) of epichlorohydrin, 39 g (0.275 mol) of dichloroethyl ether, dropwise for 1 hour, then raise the temperature to 65°C, keep ...

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Abstract

The invention discloses a synthesis method of polyamide polyamine resin. The synthesis method of the polyamide polyamine resin comprises the following steps: performing high-temperature polymerization on adipic acid, diethylenetriamine, and N-2-aminoethyl-1,3-propane diamine to obtain a polyamide polyamine intermediate; mixing the polyamine intermediate and N,N-tetramethylethylenediamine, taking carbonate as a catalyst, dropwise adding dichloroether and epoxy chloropropane, and performing a quaternization crosslinking reaction to obtain a final polymer. The polymer contains low chloridions, so that corrosion to a Yankee drying cylinder is reduced; the polymer can be singly added into slurry, and also can be combined with a stripping agent and a phosphate improver to be applied to production of toilet paper, so that the characteristic of a coating can be effectively improved; imported products can be replaced effectively, and the technological competitiveness of products is improved. The polymer provided by the invention mainly serves as a crinkling adhesive to be applied to production and manufacturing of toilet paper, kitchen paper, facial tissue and paper napkin, and also can be applied in the fields of coating, printing ink, adhesive, sewage treatment, textile printing and dyeing, biological medicine and the like.

Description

technical field [0001] The invention relates to a synthesis method of resin, in particular to a synthesis method of polyamide polyamine resin. Background technique [0002] The desired properties of the tissue, including softness, bulk, stretch and absorbency, are achieved by steam heating the Yankee cylinder and doctor blades. The wet web is dewatered primarily at the nip of the press rolls while the sheet is transferred to the surface of the dryer cylinder. The paper web contains 35-50% moisture, and the paper sheet is further dried on the drying cylinder to a dryness of 90-96%, and then scraped off with a scraper. The mechanical action of the knife causes the bonds between the fibers of the paper to break and form an internal microfold structure, a process known as creping. [0003] In order to crease, the web must be bonded to the surface of the Yankee cylinder. The art of achieving good creping qualities relies on obtaining and maintaining an appropriate level of adh...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G73/02D21H17/56D21H19/10
CPCC08G73/0293D21H17/56D21H19/10
Inventor 朱先梅
Owner 佛山市帕里达新材料科技有限公司