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Inflaming retarding copolymer latex and preparation method thereof

A copolymer latex and copolymer technology, applied in adhesives, coatings, anti-corrosion coatings, etc., can solve the problems of expensive flame retardant compounds, increased sensitivity to cracking, and limited matching performance, and achieve excellent flame retardancy and adhesion performance effect

Active Publication Date: 2014-03-26
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Replacing part of carboxylated styrene-butadiene latex with polyvinyl chloride latex can also give it certain flame-retardant properties, but these are not completely satisfactory, partly because flame-retardant compounds are often expensive, and when used in large quantities, often lead to Latex products are quite expensive
In addition, these flame retardant additives also have adverse effects on the performance of the final latex product, such as reducing toughness, increasing cracking sensitivity, affecting stability, and matching performance of flame retardant additives with other necessary additives (such as pigments, fillers, foaming agents, etc.) , processing aids, etc.) must be restricted

Method used

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  • Inflaming retarding copolymer latex and preparation method thereof
  • Inflaming retarding copolymer latex and preparation method thereof
  • Inflaming retarding copolymer latex and preparation method thereof

Examples

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Effect test

example 1

[0036] The preparation of example one copolymer latex

[0037]The copolymer latex of the present invention was prepared by two-stage emulsion polymerization according to the following procedure. When preparing the core copolymer in the first stage, first 80phm (phm: relative to 100 parts of monomer weight) deionized water, 0.05phm ethylenediaminetetraacetic acid sodium salt, 0.2phm dialkyl succinate Sodium sulfonate, 0.2phm sodium persulfate, and the monomers used to form the nucleus in Table-1 were added to the reactor and stirred to raise the temperature to 76°C, and the temperature was kept constant for 1.5 hours to obtain the core copolymer latex.

[0038] Then, the second stage of shell polymerization is carried out. First, the temperature is raised to 80°C, and the vinyl halide monomer is continuously added dropwise into the reactor within 1 hour. The aliphatic A mixture of conjugated diene and monovinyl aromatic compound was continuously added dropwise to the reactor o...

example 3

[0047] Example 3 Adhesive performance of tufted carpet

[0048] Test according to GB11746-89. Binder filling ratio: 100 parts of latex (dry glue): 300 parts of calcium carbonate. The adhesive properties of all copolymer latexes in Table-1 are shown in Table-3.

[0049] table 3

[0050]

[0051] Example 4 Carpet flame retardant performance test

[0052] Sample preparation: 100 parts of latex (dry glue): 300 parts of calcium carbonate, prepared as a carpet adhesive, and the tufted carpet coated and bonded was subjected to the tufted carpet tablet method combustion test according to the ASTMD2859-76 standard. Cut the bonded carpet sample into 230×230mm samples, draw a circular marking line with a diameter of 12.5cm in the center of each sample, place a standard burning tablet in the center of the marking line, ignite the tablet with an igniter, and measure Burn time and carbonization length. The flame retardant properties of all copolymer latex bonded carpets in Table-1 a...

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Abstract

The invention relates to inflaming retarding copolymer latex and a preparation method thereof. The polymer particles in dispersed phase of the copolymer latex have core-shell structures; each structure comprises a core copolymer area and a shell copolymer area, wherein: (1), a comonomer in the core copolymer area comprises: (a) a monovinyl aromatic compound and (b) an unsaturated carboxylic acid monomer; (2), a comonomer in the shell copolymer area comprises: (a) halogenated ethylene, (b) conjugated diene and (c) the monovinyl aromatic compound. In addition, the shell copolymer area can further comprise: (d) the unsaturated carboxylic acid monomer.

Description

Technical field: [0001] The invention relates to a flame-retardant copolymer latex and a preparation method thereof. This latex provides excellent adhesion and flame retardant properties for tufted carpet backing bonding. technical background: [0002] At present, carboxylated styrene-butadiene latex is generally used for bonding carpet backing, but due to the inherent flammability of carboxylated styrene-butadiene latex, it cannot meet the requirements for flame-retardant applications. The flame retardant requirements for decoration and decoration of public facilities have been paid attention to and have strict legal regulations in industrialized countries. In recent years, my country has gradually attracted attention to the flame retardant of materials, and has begun to pay attention to the use of flame retardant materials in public facilities such as hotels, restaurants, ancient building decoration, and large stadiums. Flame retardant test standards for coatings, etc. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F236/10C08F236/06C08F214/08C08F212/08C08F220/06C08F2/22C09J147/00C09J127/08C09D147/00C09D127/08C09D5/08
Inventor 张杰李传清贺小进李延良谭金枚梁爱民徐林
Owner CHINA PETROLEUM & CHEM CORP