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A kind of interpenetrating network polymer for paper reinforcement and preparation method thereof

An interpenetrating network and polymer technology, applied in the field of papermaking additives, can solve the problems of imperfect product performance, low wet strength performance, poor dispersion stability, etc., achieve stable and controllable preparation process, low production cost, and improve wet strength Effect

Active Publication Date: 2019-01-08
浙江恒川新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are not many reports on the preparation method of modified cationic polyacrylamide (GPAM) wet strength agent at home and abroad, and the product performance is not perfect enough.
The main problems focus on its poor dispersion stability and difficult control of the product process, and its wet strength performance is low
On the other hand, PAE resin has good wet strength performance, but during use, AOX (organic chlorine) was detected in the product and white water system, which brought many adverse effects to production

Method used

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  • A kind of interpenetrating network polymer for paper reinforcement and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Add 10 parts of reaction medium PAE resin, 10 parts of acrylamide monomer, 10 parts of dimethyl diallyl ammonium chloride monomer, 0.1 part of methylene bisacrylamide, 0.1 part of γ- Methacryloyloxypropyltrimethoxysilane, stirred evenly at 50°C, slowly added 0.18 parts of initiator aqueous solution (dissolved in 35 parts of water), dropwise for 60 minutes, and freely polymerized for 4 hours to obtain a polymer A;

[0024] (2) Add 5 parts of N,N-dimethylaminoethyl methacrylate, 5 parts of styrene, 5 parts of butyl acrylate, 5 parts of glacial acetic acid and 20 parts of DMF into the reactor. After stirring evenly, add 1 Parts of initiator AIBN were reacted at 80°C for 5 hours to obtain a yellow viscous polymer surfactant; 6 parts of polymer surfactant and 10 parts of polyisocyanate trimer were mixed evenly, and 40 parts of water were added to disperse and emulsify at a high speed to prepare A water-dispersible polyisocyanate crosslinking agent was obtained.

[0025...

Embodiment 2

[0027] (1) Add 30 parts of reaction medium PAE resin, 50 parts of acrylamide monomer, 7 parts of dimethyl diallyl ammonium chloride monomer, 0.5 part of methylene bisacrylamide, 0.3 part of γ- Glycidyl ether oxypropyltrimethoxysilane, stir evenly at 65°C, slowly add 0.5 parts of potassium persulfate-sodium bisulfite aqueous solution (dissolved in 45 parts of water), dropwise for 60 minutes, free polymerization for 4 hours , to obtain polymer A;

[0028] (2) Add 5 parts of N,N-dimethylaminoethyl methacrylate, 5 parts of styrene, 5 parts of butyl acrylate, 5 parts of glacial acetic acid and 20 parts of DMF into the reactor. After stirring evenly, add 1 Parts of initiator AIBN were reacted at 80°C for 5 hours to obtain a yellow viscous polymer surfactant; 6 parts of polymer surfactant and 10 parts of polyisocyanate trimer were mixed evenly, and 40 parts of water were added to disperse and emulsify at a high speed to prepare A water-dispersible polyisocyanate crosslinking agent w...

Embodiment 3

[0031] (1) Add 20 parts of reaction medium PAE resin, 20 parts of acrylamide monomer, 8 parts of dimethyl diallyl ammonium chloride monomer, 0.3 part of methylenebisacrylamide, 0.2 part of γ- Methacryloxypropyltrimethoxysilane, stirred evenly at 65°C, slowly added 0.3 parts of ammonium persulfate-sodium bisulfite initiator aqueous solution (dissolved in 40 parts of water), and the dropping time was 50 minutes. Free polymerization for 4 hours to obtain Polymer A;

[0032] (2) Add 5 parts of N,N-dimethylaminoethyl methacrylate, 5 parts of styrene, 5 parts of butyl acrylate, 5 parts of glacial acetic acid and 20 parts of DMF into the reactor. After stirring evenly, add 1 Parts of initiator AIBN were reacted at 80°C for 5 hours to obtain a yellow viscous polymer surfactant; 6 parts of polymer surfactant and 10 parts of polyisocyanate trimer were mixed evenly, and 40 parts of water were added to disperse and emulsify at a high speed to prepare A water-dispersible polyisocyanate cr...

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Abstract

The invention discloses an interpenetrating network polymer for paper strengthening and a preparation method of the polymer. The preparation method includes the steps: firstly, taking PAE (polyarylether) resin solution as a reaction medium, taking acrylic amide, dimethyl diallyl ammonium chloride and methylene diacrylamide as a monomer, taking organosiloxane as a modifying agent, and performing copolymerization by the aid of free radical under an initiator to obtain a polymer A; secondly, adding polyisocyanate crosslinking agents to further polymerize to obtain novel interpenetrating network polymer GPAM-PAE (polyacrylamide resin-polyarylether). The novel interpenetrating network polymer GPAM-PAE has the advantages that paper performances such as wet strength and dry strength can be effectively improved, the absolute content of the PAE is decreased, residual amount of chloropropanol is reduced by 10 times or more as compared with a normal product, the product is stable and controllable in preparation process, low in production cost and stable, and storage is facilitated.

Description

technical field [0001] The invention relates to the field of papermaking auxiliary agents, in particular to a preparation method of an interpenetrating network polymer used for paper reinforcement. Background technique [0002] Polyacrylamide is called "Baiye Auxiliary", among which cationic polyacrylamide (CPAM) is one of the most widely used varieties. CPAM is an acrylamide copolymer containing cationic structural units. The molecular chain can ionize polycations and small anions in water. The addition of cations in CPAM increases the adsorption of polymers to negatively charged colloids, polymers and solid surfaces. The cohesive ability can cause strong electric neutralization, enhance its adsorption, precipitation and flocculation, and is especially suitable for papermaking technology. [0003] At present, there are not many reports on the preparation method of modified cationic polyacrylamide (GPAM) wet strength agent at home and abroad, and the product performance is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H17/45D21H21/20C08F220/56C08F226/02C08F222/38C08F220/34C08F212/08C08F220/18
CPCC08F212/08C08F220/18C08F220/1804C08F220/34C08F220/56D21H17/455D21H21/20C08F226/02C08F222/385
Inventor 赵新民杨柳青林俊辉刘敏陈宪吴小军王建军
Owner 浙江恒川新材料有限公司
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