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A kind of preparation method of polyamide polyamine-polyetheramine cylinder sticking agent

A technology of polyamide polyamine and polyether amine, which is applied in the field of papermaking additives, can solve problems such as unsatisfactory durability, no detection method provided, and increase in polymer molecular weight, and achieve long-lasting adhesion and good initial adhesion. The effect of binding strength and good uniformity

Active Publication Date: 2022-04-15
ZHEJIANG TRANSFAR WHYYON CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The national standard GB / T 36420-2018 stipulates the limited content of absorbable halides in tissue paper and paper products, including epichlorohydrin, DCP, MCPD, but does not provide detection methods
[0005] In addition, the irreversible cross-linking reaction makes the PAE cylinder sticking agent have good cohesive force, but also leads to its unsatisfactory durability.
PAE cylinder sticking agent will tend to accumulate on the surface of the dryer, and the continuous crosslinking will make the molecular weight of the polymer increase infinitely. After a period of time, the coating will harden, causing the scraper to rattle, and the partial coating will crack and fall off, causing Holes in pages or even paper breaks, the coating has to be rebuilt

Method used

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  • A kind of preparation method of polyamide polyamine-polyetheramine cylinder sticking agent
  • A kind of preparation method of polyamide polyamine-polyetheramine cylinder sticking agent
  • A kind of preparation method of polyamide polyamine-polyetheramine cylinder sticking agent

Examples

Experimental program
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Effect test

Embodiment 1

[0030]In a stainless steel reaction kettle with conditions such as weighing, jacket heating, cooling, nitrogen protection, stirring, temperature, pressure indication, and feeding, add 17.9g of tallow, replace with nitrogen, start stirring, heat up to 140°C, and vacuumize To 5kPa and keep for 15 minutes, the constant weight in the kettle is 17.1g (about 0.02mol). Add 214.8g (1.47mol) of adipic acid, fill with nitrogen to slightly positive pressure, add 155g (1.5mol) of diethylenetriamine dropwise, raise the temperature to 140°C and stir and mix for 2 hours, then raise the temperature by 10°C per hour until 180°C, keep warm 2 hours. Start the vacuum system, gradually evacuate to an absolute pressure of 100Pa, and keep warm for 2 hours. Stop heating, fill with nitrogen to slightly positive pressure, add 670 g of hot deionized water to dilute the reaction material to a solid content of 33%, which is the aqueous solution of polyamide polyamine intermediate.

[0031] The aqueous s...

Embodiment 2

[0041] Add 16.2g of palm oil to a stainless steel reactor with conditions such as weighing, jacket heating, cooling, nitrogen protection, stirring, temperature, pressure indication, and feeding, replace with nitrogen, start stirring, heat up to 140°C, and vacuumize To 5kPa and keep for 15 minutes, the constant weight in the kettle is 16.0g (about 0.01mol). Add 214.8g (1.47mol) of adipic acid, fill with nitrogen to slightly positive pressure, dropwise add 103.2g (1mol) of diethylenetriamine and 73.1g (0.5mol) of triethylenetetramine, raise the temperature to 140°C and stir and mix for 2 hours. Then the temperature was increased by 10°C per hour until 180°C, and kept for 2 hours. Start the vacuum system, gradually evacuate to an absolute pressure of 100Pa, and keep warm for 2 hours. Stop heating, fill with nitrogen to slightly positive pressure, add 650 g of hot deionized water to dilute the reaction material to a solid content of 35%, which is the aqueous solution of polyamide...

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Abstract

The invention discloses a preparation method of a polyamide polyamine-polyetheramine cylinder sticking agent. The method adopted in the present invention is as follows: under the protection of nitrogen gas, the polycondensation reaction of alkenylamine derivatives and oils and dibasic acids or corresponding dibasic esters is carried out under normal pressure, and then the polycondensation reaction is continued under vacuum until the molecular weight is no longer become larger, add water to form an aqueous solution of polyamide polyamine intermediate; add branched polyetheramine to the aqueous solution, seal the reaction, raise the temperature to carry out crosslinking reaction, finally add organic acid to terminate the reaction, add water to dilute to obtain polyamide polyamine ‑Polyetheramine cylinder sticking agent. The cylinder sticking agent prepared by the invention has good cohesive force, softness, water solubility, uniformity and durability, etc., and avoids the use of epichlorohydrin.

Description

technical field [0001] The invention belongs to the technical field of papermaking additives, and relates to a sticky agent that is sprayed on a drying cylinder to help paper wrinkle when producing crepe paper, in particular to a preparation method of a polyamide polyamine-polyetheramine sticky agent . Background technique [0002] In the production of crepe paper, the paper is dried by a drying cylinder, and it needs to have a strong impact with a scraper to produce wrinkles, so as to improve the paper's softness, water absorption, bulk and other properties, and obtain a good hand feeling. The creping process requires proper cohesion between the paper sheet and the dryer cylinder. For paper machines with high speeds, the natural cohesion between the paper sheet and the dryer cylinder is not enough to form ideal wrinkles. A dryer must be used. Cylinder coating additives (including cylinder sticking agent, stripping agent and modifier) ​​are adjusted to achieve flexible cont...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G81/00C08G69/28C08G69/26C08G69/40C09D187/00C09D177/00
CPCC08G81/00C08G69/28C08G69/26C08G69/40C09D187/00C09D177/00
Inventor 钱进梁福根谢占豪方黎锋姚胜来雷赵世英陈文杰
Owner ZHEJIANG TRANSFAR WHYYON CHEM
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