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Method for preparing a fire retardant additive for coatings and resulting products

A technology of flame retardant additives and additives, applied in the direction of nanotechnology for materials and surface science, fire-resistant coatings, chemical instruments and methods, etc., to achieve the effect of controlling smoke emission

Inactive Publication Date: 2009-11-18
SERVICIOS IND PENOLES S A DE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Most furniture is painted for aesthetic purposes and to protect the material it is made of, however most of this paint is flammable and makes an excellent flame when added to a naturally combustible base material Diffusion source

Method used

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  • Method for preparing a fire retardant additive for coatings and resulting products
  • Method for preparing a fire retardant additive for coatings and resulting products
  • Method for preparing a fire retardant additive for coatings and resulting products

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] Embodiment 1 is used for the preparation of the additive in the alkyd type coating that residual moisture content is less than 5%

[0062] 1. Separation of nano-scale magnesium hydroxide having the following particle size distribution with a moisture content of 65%: D 10 , 59.0nm; D 50 , 92.7nm; D 90 , 153 nm; measured by laser ray scattering using equipment designated COULTER LS 230. For telling purposes, we use 1200 grams.

[0063] 2. Place the magnesium hydroxide granules in a 6L container with a pour spout.

[0064] 3. Pour 3600 g of ethylene glycol butyl ether, and agitate (disperse) at a peripheral speed of 5 to 30 m / s using a dispersing propeller. This agitation (dispersion) is maintained for 5 to 15 minutes.

[0065] 4. Remove as much of the liquid fraction as possible with the help of a centrifuge, decanter, filter or other means of solid-liquid separation, depending on the capabilities of the separation equipment chosen.

[0066] 5. Repeat steps 3 and 4 ...

Embodiment 2

[0076] Example 2: Preparation of additives for use in nitrocellulose-based coatings with a residual moisture content of less than 5%

[0077] 1. Charge 490 grams of nitrocellulose into a non-spout 1.0 L Berzelius beaker.

[0078] 2. Place the beaker in a dispersing device with a diameter of 7 cm and a deflector and a propeller for dispersing.

[0079] 3. Agitate the resin at a moderate speed.

[0080] 4. Pour 10 grams of resin-compatible dispersant DCM-305 (a copolymer containing acid groups).

[0081] 5. Add 400 grams of dry magnesium hydroxide with an average particle size of 100 nm.

[0082] 6. Maintain moderate agitation until the magnesium hydroxide is completely wetted.

[0083] 7. After mixing evenly, increase the speed of the disperser until it has sufficient shear force to ensure effective dispersion: the peripheral speed is 15-30m / s.

[0084] 8. Leave to diffuse for 15 minutes or as long as needed to achieve application granularity.

[0085] The flame retardant ...

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Abstract

The invention relates to a method for preparing an additive based on metal hydroxide and, in particular, magnesium hydroxide, to be integrated into coatings in order to provide same with improved fire retardant properties. The average particle sizes of the hydroxide are selected from between 1 nanometre and 10 micrometres, preferably with a very small variation. The magnesium hydroxide is subjected to a washing and dispersion treatment so that it disperses efficiently and does not interfere with the desirable properties of the coating. The materials and conditions used in the treatment and the particle size are selected according to the type of coating. The end coating can be based on water, solvents, oil and alcohol. Compared to coatings formulated with other fire retardant compounds, smaller weight losses due to burning have been demonstrated with the inventive additive in an ASTM D1360 standard test.

Description

technical field [0001] The present invention relates to a process for the preparation of additives for coatings applied to structural elements or as finishes for combustible materials such as wood and its derivatives, in order to provide Flame retardant properties; in particular, the invention relates to the preparation of additives formulated from a mixture of metal hydroxides with a dispersant, a compatible vehicle (an organic solvent), water and a resin Easy to combine with paint. technical background [0002] It is well known that the implementation of residential buildings or other activities (work, recreation, etc.) requires measures to help control fires or slow the spread of flames. For example, some countries have enacted regulations governing the materials used in the construction of buildings, as well as regulations governing the manufacture of furniture contained in buildings. [0003] Most furniture is painted for aesthetic purposes and to protect the material...

Claims

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Application Information

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IPC IPC(8): C09D5/18C09D1/02C01F7/02C01F7/021C09D7/45C09D7/61
CPCC01F7/02C09D5/18C01F5/14C01F7/021C09D7/1216C09D7/1266C09D15/00C01P2004/61C09D7/1275C08K3/22C01P2004/64C09D7/1283C01P2004/52C01P2004/62B82Y30/00C09K21/02C09D7/61C09D7/67C09D7/68C09D7/69C09D7/45C09D1/02
Inventor 杰瑟斯·M·马丁内斯马丁内斯朱里奥·C·兰热尔马塔里卡多·贝内维德斯佩雷斯乔斯·G·博卡内格拉罗杰斯
Owner SERVICIOS IND PENOLES S A DE
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