Formaldehyde-purifying alkyd resin and preparation method thereof

An alkyd resin and formaldehyde technology, applied in coatings, polyester coatings, etc., can solve the problems of unsuitable promotion of biological purification methods, affecting the light transmittance of resins, and unclear mechanism of formaldehyde, achieving low toxicity and practicability. Strong and fluid effect
CN103421173AActive Publication Date: 2013-12-04SOUTH CHINA UNIV OF TECH
9 Cites 14 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SOUTH CHINA UNIV OF TECH
Publication Date
2013-12-04

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses formaldehyde-purifying alkyd resin and a preparation method thereof. The formaldehyde-purifying alkyd resin is prepared through reaction of polyhydric alcohols, polyatomic acids, organic solvents, formaldehyde removing agents and anion generating agents. The method includes during preparation, by the protection of nitrogen, firstly adding the polyhydric alcohols and the polyatomic acids, and raising the temperature to 100 to 160 DEG C; adding catalyst, raising the temperature to 220 to 260 DEG C, and keeping the temperature for 1 to 3.5 hours; control the temperature from 200 to 220 DEG C, adding water-carrying agents, and raising the temperature to 250 to 280 DEG C to flow back until the acid value is lower than 7; adding the organic solvents and mixing evenly to obtaining the alkyd resin; adding the formaldehyde removing agents, and reacting at the temperature of 25 DEG C to 80 DEG C for 3 to 30 minutes to obtain modified alkyd resin, namely the formaldehyde-purifying alkyd resin. When the formaldehyde-purifying alkyd resin reacts with the formaldehyde, a resulting product is not volatile and non-toxic, and secondary contamination is eliminated; the preparation process in simple, requirement for equipment is low, and the formaldehyde-purifying alkyd resin is adaptable to mass production.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to an alkyd resin, in particular to a preparation method of the alkyd resin with the effect of removing formaldehyde; it belongs to the technical field of air pollutant purification. Background technique

[0002] Formaldehyde is a flammable, highly reactive, irritating, colorless, toxic gas at room temperature. Most of the harm to the human body is exogenous formaldehyde. Exogenous formaldehyde can be roughly divided into two categories, one is formaldehyde when in contact with humans, and the other is formaldehyde that is metabolized by substances such as methanol and methylamine when in contact with humans. Common sources of formaldehyde include: construction and decoration materials, such as wood panels (particleboard, blockboard, plywood, medium density fiberboard, large core board, etc.), wood adhesives, decoration materials that may emit formaldehyde (such as wallpaper) and furnishings (such as chemical fiber carpets), etc...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More