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Halogen-free flame retardant compounds

A compound and composition technology, applied in the field of polymer compositions and halogen-free flame retardant compounds, can solve problems such as damage, insufficient thermal stability, disturbing the compounding process, etc., and achieve improved thermal stability, good color, good The effect of flame retardant properties

Inactive Publication Date: 2005-01-12
CIBA SPECIALTY CHEM HLDG INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Thermal stability during (melt) processing is insufficient
The consequence is the formation of brittle strands during the compounding process which damage and disturb the compounding process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0067] Definition of assay method used:

[0068] ● Slurry pH : determined at room temperature after stirring a slurry of 10 wt % of the compound according to the invention in water for 1 hour.

[0069] ● Flame retardant : Flame retardancy was determined using test strips subjected to the test method according to Underwriters Laboratories Inc., Bulletin 94, Combustion Test for the Classification of Materials. According to this test method, materials so tested are classified as UL94V0, UL94V1, or UL94V2 depending on the results obtained. In this category, the highest class V0 represents good flame retardancy.

[0070] ● water soluble : Measured by adding 10 g of this compound to 100 ml of water, stirring the mixture for 1 hour, and measuring at room temperature.

[0071] ● Comparative Tracking Index (CTI) : Measured in accordance with IEC60112.

[0072] Comparative experiment A

[0073] 47 g of urea was added to 100 g of condensed phosphoric acid while stirring. S...

Embodiment I

[0083] With 554g melamine ammonium phosphate dihydrate ("MAP 2H 2 (O salt") is introduced into a pressure reactor. The ammonia partial pressure in the pressure reactor is set at 1.2 MPa; the temperature is set at 315° C. The total reaction time at a temperature above 200° C. is about 2 h, of which 30 min is at 315°C.

[0084] The reaction products were analyzed by X-ray diffraction, elemental analysis, 31 Identified by P-NMR, and pH measurement:

[0085] A comparison of the X-ray diffraction pattern of Table 2a with Table 2b shows that a new compound has been formed;

[0086] Nitrogen element analysis proves that the reaction product has melamine and ammonium;

[0087] ● 31 P-NMR proved that the generated product was a polyphosphate with a degree of polymerization ('m+n') of 30;

[0088] • The pH of the slurry of the resulting reaction product was 7.8, which means that no acid groups were present.

[0089] From the above it can be concluded that a new compound comprising...

Embodiment II

[0095] In a pressure reactor, 1108 g of melamine ammonium phosphate dihydrate ('MAP 2H 2 O salt') is contacted with 600g urea. The initial value of the partial pressure of ammonia in the reactor was 0.05 MPa. The temperature of the pressure reactor was raised to approximately 315°C. The total reaction time at temperatures above 200°C is around 2h, of which 30min is at 315°C.

[0096] The degree of polymerization (‘m+n’) of the resulting melamine ammonium polyphosphate was calculated using 31 The measured value by P-NMR was 120. The pH of the slurry of the resulting reaction product was 7.4. The water solubility of this melamine ammonium polyphosphate was 1.0 g / 100 ml of water.

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Abstract

The invention relates to a compound of the general formula: Z1-O-[m(R1PO3),n(R2HPO3]-Z2, in which [m(R1PO3)] represent a copolyphosphate, with m (R1PO3) units and n (R2HPO3) units; R3 represents an ammonium building block; R2 represents a 1,3,5-triazine building block; Z1 and Z2 represent ammonium or 1,3,5-triazine building blocks, to be chosen independently of each other; m and n represent whole numbers greater than or equal to 1; and m+n numbers greater than 3. The invention further relates to a method for the preparation of the above compound and to flame-retardant polymer compositions in which compounds with the above formula are applied as flame retardant, the use of the halogen-free compound in a coating composition and a substrate containing a coating formed from the coating composition that has been cured.

Description

technical field [0001] The present invention relates to a compound, especially a halogen-free flame retardant compound, a preparation method thereof, a polymer composition containing the compound, the use of the halogen-free compound in a coating composition, and a compound containing The composition forms the substrate of the coating. Background technique [0002] Halogen-free flame retardant compounds are known in the literature. They contain nitrogen or phosphorus compounds or mixtures thereof. Compounds in which nitrogen and phosphorus are present are also useful, such as ammonium polyphosphates substituted with melamine. [0003] Ammonium polyphosphates substituted with melamine are disclosed in US-A-4,043,987. Contrary to what is stated in this reference, none of the melamine substituted ammonium polyphosphates were produced. The reaction product in Example 1 of said publication was incorrectly attributed to ammonium polyphosphate substituted with melamine. Althou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D251/66C07D251/70C07F9/6521C08K5/521B32B27/00C08L101/00C09D5/18C09D7/12C09D201/00C09K21/12C09K21/14
CPCC07D251/66C07D251/70C07F9/38
Inventor R·H·M·基尔克尔斯N·J·J·埃尔曼斯P·H·C·格罗勒曼A·W·M·布拉姆
Owner CIBA SPECIALTY CHEM HLDG INC
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