Flame-retarding nitrogenous epoxy resin and its composition

An epoxy resin and flame retardant technology, applied in the direction of organic chemistry, etc., can solve the problems of reducing the addition ratio and failing to improve the flame retardant properties of the resin composition, and achieve the effect of excellent heat resistance and excellent flame retardant effect

Inactive Publication Date: 2003-06-11
CHANG CHUN PLASTICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the currently used reactive nitrogen-containing flame retardant resins are developed based on phenolic resins. However, for semiconductor packaging, the resin composition based on phenolic resins is relatively low due to the relatively low proportion of resin added, so that it is impossible to improve the resin combination. flammability

Method used

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  • Flame-retarding nitrogenous epoxy resin and its composition

Examples

Experimental program
Comparison scheme
Effect test

Synthetic example 1

[0067] Hardening accelerator B: 2-methylimidazole (hereinafter referred to as 2MI). Synthesis Example 1 Preparation of Epoxy Resin D

[0068] Melamine 126g, 37% formaldehyde solution 240g and methanol 240g in 3 liter 5 neck glass equipped with electric heating mantle, temperature controller, electric mixer and stir bar, nitrogen inlet, electric thermocouple, water cooled condenser and addition funnel Heating, dissolving and stirring in the reaction kettle, stirring for 1 hour after the temperature reached 60°C. To the obtained mixture, 282 g of phenol and 1.3 g of hydrochloric acid were added, and the mixture was heated and stirred at a temperature of 80° C. for 4 hours to carry out a dehydration reaction. The above-mentioned reaction mixture is heated to reclaim methanol and water to obtain a triglyceride containing hydroxyl and phenyl. Compound 409 g, analyzed for nitrogen content of about 20.5%.

Synthetic example 2

[0069] The obtained hydroxy- and phenyl-containing tris 100 grams of the compound and 555 grams of epichlorohydrin were placed in a glass reactor for heating, stirring and dissolving. When the pressure reached 200 mmHg and the temperature reached 70°C by vacuuming and decompression, 49.5% aqueous sodium hydroxide solution of 77.9% was stably added within 4 hours. g, and continue to react for 1 hour. After completing the reaction, heating and recovering epichlorohydrin, adding a solvent and water to the residue, filtering the resin after removing the brine, and steaming off the solvent, the nitrogen-containing flame-retardant epoxy resin of the present invention (hereinafter referred to as epoxy resin) is obtained. Resin D) 138 grams, the nitrogen content of the epoxy resin obtained by analysis is about 14.9%, and the epoxy equivalent is about 205 g / ml. Synthesis example 2 Preparation of epoxy resin E

[0070] 126 g melamine, 486 g 37% formaldehyde in water and 486 g n-butan...

Synthetic example 3

[0071] The obtained hydroxy- and phenyl-containing tris 130 grams of compound and 555 grams of epichlorohydrin were placed in a glass reaction kettle for heating, stirring and dissolving. When the pressure reached 200 mmHg and the temperature reached 70 ℃ by vacuuming and decompression, 49.5% sodium hydroxide aqueous solution 77.9 ℃ was added stably within 4 hours. g, and continue to react for 1 hour. After completing the reaction, heating and recovering epichlorohydrin, adding a solvent and water to the residue, filtering the resin after removing the brine, and steaming off the solvent, the nitrogen-containing flame-retardant epoxy resin of the present invention (hereinafter referred to as epoxy resin) is obtained. Resin E) 182 grams, the nitrogen content of the epoxy resin obtained by analysis is about 7.8%, and the epoxy equivalent weight is about 235 grams / equivalent. Synthesis Example 3 Preparation of Phosphorus-Containing Epoxy Resin F

[0072] In a 3-liter 5-neck gla...

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Abstract

The invention refers to a nitrous difficult-burning epoxy resin. The melamine remification in turn reacts with aldehyde and hydroxybenzene compound as well as epoxy halogen propane to get the epoxy resin. The invention also refers to a combination of difficult-burning epoxy resin, including the above epoxy resin. The invention has no bad matters like halogen and diantimony trioxide.

Description

technical field [0001] The present invention relates to a nitrogen-containing flame-retardant epoxy resin and a resin composition containing the nitrogen-containing flame-retardant epoxy resin. Background technique [0002] At present, the packaging materials for semiconductors are mostly based on epoxy resin compositions in view of economic and productivity considerations. Electronic components of this type of semiconductor are required to meet the flame retardant specifications specified by UL in order to ensure safety in use. In order to achieve this flame retardant specification, materials such as halogen-containing epoxy resin and antimony trioxide are currently added to the epoxy resin composition used for encapsulation as flame retardant additives. However, these flame retardant additives are known to be harmful to humans and animals. For example, antimony trioxide has been listed as a carcinogen, and halogen-containing epoxy resins such as bromine-containing epoxy ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D251/70C08G14/10C08K5/3492C08L63/00
Inventor 黄坤源陈鸿星赵焕章陈智富
Owner CHANG CHUN PLASTICS CO LTD
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