Anti-bacterial and anti-ultraviolet multifunctional chemical fiber

Patent metadata

Field	Value
Publication number	US-11319647-B2
Application number	US-201816647398-A
Country	US
Kind code	B2
Filing date	Jun 27, 2018
Priority date	Jan 29, 2018
Publication date	May 3, 2022
Grant date	May 3, 2022

Abstract

A method for preparing an anti-bacterial and anti-ultraviolet multifunctional chemical fiber includes: dissolving several soluble metal salts and a polymer complexing dispersant into water to prepare an aqueous solution; adding into a polymer monomer; reacting under microwave or hydrothermal action to obtain a polymer monomer containing multifunctional nano oxides; adding the polymer monomer with other monomer, catalyst, initiator, stabilizer, and the like into a polymerization reactor; and carrying out esterification, polycondensation or copolymerization to obtain a polymer melt, and carrying out spinning or ribbon casting and granule cutting to obtain an anti-bacterial and anti-ultraviolet multifunctional chemical fiber or masterbatch chips. By generating nano metal oxides in the monomer in situ before the polymerization reaction, small particle sizes and dispersibility of the nano metal oxide are ensured; the chemical fiber has efficient, durable antibacterial and anti-ultraviolet functions and is free of metal ion precipitation.

First claim

I claim:

1. A preparation method of anti-bacterial and anti-ultraviolet multifunctional chemical fiber, characterizing in comprising the following steps:
(1) dissolving soluble metal salts and a polymer complex dispersant into water at a mass ratio of 1:0.02 to 0.5 to prepare an aqueous solution having the soluble metal salts concentration of 5 to 10%; adding the aqueous solution into a polymer monomer under vigorous stirring, the molar concentration of the soluble metal salts in the polymer monomer is 0.01 to 0.5M, and the reaction is carried out under microwave or hydrothermal condition at a temperature of 130 to 180° C. for 30 to 50 minutes, and evaporating under vacuum to control the water content below 2% to obtain a polymer monomer containing nano-oxides; the soluble metal salts are a mixture of two or more compounds selected from of zinc, magnesium, calcium, titanium, copper, aluminum, zirconium, barium, strontium, and silicon; the polymer complex dispersant is selected from polyacrylamide, polyacrylic acid, polyvinylpyrrolidone, polyvinyl alcohol, polymaleic anhydride, polyquaternary ammonium salt, polyethylene glycol, polyurethane, polyamide, and amino acid; the polymer monomer is selected from ethanol, acetone, ethylene glycol, propylene glycol, butanediol, glycerol, allyl alcohol, ethylene diamine, caprolactam, and amino acid;
(2) at the beginning or intermediate stage of the polymerization reaction, adding the polymer monomer containing nano-oxides obtained in step (1) to conventional polymer monomer and other monomers required for polymerization, and mixing thoroughly, carrying out the polymerization reaction under common polymerization condition to prepare anti-bacterial and anti-ultraviolet multifunctional polymer melt;
(3) spinning the polymer melt prepared in step (2) to obtain an anti-bacterial and anti-ultraviolet multifunctional chemical fiber; or ribbon casting and granule cutting the polymer melt to obtain anti-bacterial and anti-ultraviolet multifunctional masterbatch chips.

2. The preparation method of anti-bacterial and anti-ultraviolet multifunctional chemical fiber according to claim 1 , wherein in the step (2), said conventional polymer monomer is selected from PET, PBT, PTT, PA, ABS, PP, PE, PVC, and PU.

Assignees

• Nantong Textile & Silk Industrial Tech Research Institute
• Univ Soochow

Inventors

• Zheng Min

Classifications

• D01F1/106

  Radiation shielding agents, e.g. absorbing, reflecting agents · CPC title

• D01F6/92

  of polyesters · CPC title

• D01D5/08

  Melt spinning methods {(D01D5/0023 takes precedence)} · CPC title

• C08L67/02

  Polyesters derived from dicarboxylic acids and dihydroxy compounds (C08L67/06 takes precedence) · CPC title

• C08G63/78

  Preparation processes · CPC title