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Modified polycarbodiimide composition and modified polycarbodiimide

A polycarbodiimide and carbodiimide technology, applied in the field of modified polycarbodiimide groups, can solve the problems of poor reactivity, adhesion, poor heat resistance, corrosion, etc., and achieve excellent heat resistance and adhesion. The effect of cohesiveness and excellent storage stability

Inactive Publication Date: 2007-05-30
NISSHINBO IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, compared with polycarbodiimide, polyguanidine obtained by modifying polycarbodiimide has poor reactivity, adhesion, and heat resistance, and may cause residual or dissociated bismuth when it is used for metals. Alkylamines cause adverse effects such as corrosion

Method used

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  • Modified polycarbodiimide composition and modified polycarbodiimide
  • Modified polycarbodiimide composition and modified polycarbodiimide
  • Modified polycarbodiimide composition and modified polycarbodiimide

Examples

Experimental program
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Embodiment

[0140] Next, the present invention will be described in more detail by way of examples.

[0141] [Synthesis of aromatic polycarbodiimide]

Synthetic example 1

[0143] Into a 1-liter four-necked flask, 70.0 g of 4,4'-diphenylmethane diisocyanate (hereinafter referred to as MDI), 74.0 g of PTMG1000 (manufactured by Sanyo Chemical Industry Co., Ltd.), 320.0 g of toluene as a solvent, and methyl ethyl ketone ( MEK) 180.0g, which was immersed in a 90°C oil bath, and heated and stirred for 2 hours.

[0144] Then, 0.12 g of 3-methyl-1-phenyl-2-phosphorolene (hospholen)-1-oxide (hereinafter referred to as "carbodiimidization catalyst") was added, and the temperature was raised to 110°C. Carbodiimide reaction was performed for 5 hours to obtain a polycarbodiimide copolymer solution.

Synthetic example 2

[0146] In a 1-liter four-necked flask, 70.0 g of toluene diisocyanate (2,4-toluene diisocyanate: 2,6-toluene diisocyanate = 80:20 mixture, hereinafter referred to as TDI), PTMG1400 (Sanyo Chemical Industry Co., Ltd.) production) 50.0 g, which was immersed in an 80° C. oil bath, and heated and stirred for 3 hours. Then add 500.0 g of cyclohexanone as a solvent to form a uniform solution, add 0.16 g of a carbodiimidization catalyst, heat up to 130 ° C, and perform a carbodiimidization reaction for 6 hours to obtain polycarbodiimidization Amine Copolymer Solution.

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Abstract

Modified polycarbodiimide compounds and modified polycarbodiimide have character in store stability in state of solution is improved, reformed polycarbodiimide after dryness has high thermostability and caking capacity, no amine residue to etch metal are provided. Wherein, modified polycarbodiimide is obtained by using diisopropylanmine modify polycarbodiimide obtained from aromatic diisocyanate compounds.

Description

technical field [0001] The present invention relates to modified polycarbodiimide compositions and modified polycarbodiimides, and more particularly, to a high degree of solution stability resulting from the modification of polycarbodiimide to polyguanidine using diisopropylamine , At the same time, the modified polycarbodiimide can be regenerated into polycarbodiimide by drying treatment, and the modified polycarbodiimide composition hardly leaves amine components after drying. Background technique [0002] Conventionally, polycarbodiimide has been used as an adhesive or encapsulant for electronic material parts and the like due to its high adhesiveness and heat resistance. The polycarbodiimide can be used as a binder or encapsulant by casting in solution state. [0003] However, the solubility of polycarbodiimide to various solvents is low, and even in a cool and dark place, reaction of carbodiimide groups, aggregation of polymers, and gelation occur slowly in a solution ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L79/00C08G18/02
CPCC08F8/30C08G73/10C08G73/1003C08G73/1089
Inventor 高桥郁夫富田秀司
Owner NISSHINBO IND INC
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