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Low-melting-point and flame-retarding copolymerized nylon and preparation method thereof

A technology of copolymerized nylon and low melting point, which is applied in the field of low melting point flame-retardant copolymerized nylon and its preparation, which can solve the problems of unseen industrial products and achieve the effects of simple method, good compatibility and low preparation cost

Inactive Publication Date: 2017-09-22
四川东方绝缘材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Low-melting-point nylon with flame-retardant properties has not been reported in the literature, and no industrial products have come out

Method used

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  • Low-melting-point and flame-retarding copolymerized nylon and preparation method thereof
  • Low-melting-point and flame-retarding copolymerized nylon and preparation method thereof
  • Low-melting-point and flame-retarding copolymerized nylon and preparation method thereof

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preparation example Construction

[0035] The first part preparation of flame retardant containing P

[0036] In Reactor 1, put 100 moles of DOPO derivatives and solvent absolute ethanol into it, heat to 70°C, under strong stirring, the DOPO derivatives are evenly dispersed in absolute ethanol, and then cool down to 48°C or 49°C or 50°C or 51°C or 52°C, then add 100 moles of diamine, stir and mix to make the reaction complete (the reaction time is generally 3 to 5 hours), cool down to 40°C and filter with suction to obtain a P-containing flame retardant agent.

[0037] The DOPO derivative is DOPOMA (its structural formula is ) and DOPOITA (its structural formula is: ).

[0038] The diamine is hexamethylenediamine or decanediamine.

[0039] The P-containing flame retardants prepared by DOPO derivative DOPOMA and hexamethylenediamine or decanediamine are P1 flame retardants and P2 flame retardants respectively. The P-containing flame retardants prepared by DOPO derivative DOPOITA and hexamethylenediamine o...

Embodiment 29

[0057] A low melting point flame retardant copolymerized nylon, the low melting point flame retardant copolymerized nylon has the chemical structural formula shown in formula (I):

[0058]

[0059] In formula (I): m=10~50, R can be saturated C2~C10 linear, branched or cyclic alkylene, in R 1 In the structural formula of a=0~30, b=0~30, c=0~10, d=0~20, e=0~20, f=0~10, and a, b, c, d, e, f is not 0 at the same time, A 1 =-NH(CH 2 ) 6 NH-, A 2 =-NH(CH 2 ) 10 NH-, B 1 =-CO(CH 2 ) 8 CO-, B 2 =-CO(CH 2 ) 10 CO-, B 3 =-CO(CH 2 ) 4 CO-;

[0060] The low-melting point flame-retardant copolymerized nylon is a transparent non-crystalline glass-like polymer with a melting point range of 100-130°C, a relative viscosity of 2.0-2.80, a limiting oxygen index of 28-32%, and a flame-retardant level of UL-94V-0. class.

Embodiment 30

[0062] A low-melting point flame-retardant copolymerized nylon, which has a chemical structural formula shown in formula (II):

[0063]

[0064] In formula (II): m=10~50, n=1~15, R can be saturated C2~C10 linear, branched or cyclic alkylene, in R 1 In the structural formula of a=10~30, b=10~30, c=0~10, d=5~20, e=5~20, f=0~10, and a, b, c, d, e, f is not 0 at the same time, A 1 =-NH(CH 2 ) 6 NH-, A 2 =-NH(CH 2 ) 10 NH-, B 1 =-CO(CH 2 ) 8 CO-, B 2 =-CO(CH 2 ) 10 CO-, B 3 =-CO(CH 2 ) 4 CO-;

[0065] The low-melting point flame-retardant copolymerized nylon is a transparent non-crystalline glass-like polymer with a melting point range of 100-130°C, a relative viscosity of 2.0-2.80, a limiting oxygen index of 28-32%, and a flame-retardant level of UL-94V-0. class.

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Abstract

The invention discloses low-melting-point and flame-retarding copolymerized nylon shown as a formula (I) and a preparation method thereof. The preparation method of the low-melting-point and flame-retarding copolymerized nylon comprises the following steps: enabling a DOPO (9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide) derivative and diamine to react to synthesize a P-containing flame retardant; then copolymerizing the P-containing flame retardant, fatty acid and fatty amine together, and carrying out pre-condensation reaction for 2h to 3h under conditions that the temperature is 200 DEG C to 230 DEG C and the vacuum degree is 1.7MPa to 2.0MPa; carrying out vacuum polymerization reaction for 1h to 2h under conditions that the temperature is 230 DEG C to 250 DEG C and the vacuum degree is -0.095MPa; cooling to 220 DEG C to 240 DEG C, and introducing nitrogen gas to carry out balance reaction for 0.5h, so as to prepare the low-melting-point and flame-retarding copolymerized nylon with a melting point range of 100 DEG C to 130 DEG C, the relative viscosity of 2.0 to 2.8, a flame-retarding limited oxygen index of 28 percent to 32 percent and a flame-retarding grade of UL-94V0. The product disclosed by the invention is a transparent and non-crystalline glassy mass polymer, and can be used for the fields of hot-melt adhesives and fiber spinning. (The formula (I) is shown in the description) .

Description

technical field [0001] The invention belongs to organic compounds and their preparation, and relates to polyamides and their synthesis, in particular to a low melting point flame-retardant copolymerized nylon and its preparation method. The low-melting-point flame-retardant copolymerized nylon of the invention can be used in the fields of hot-melt adhesives, fiber spinning and the like. Background technique [0002] Low-melting point nylon is a kind of modified product with a lower melting point than conventional nylon. Compared with homopolynylon in terms of transparency, density and processing performance, it is greatly improved. Combined with its lower melting point and good bonding performance, Widely used in hot melt adhesives, fiber spinning and other fields. Nylon hot-melt adhesive is a low-melting-point nylon widely used in industry. Its advantages are narrow softening point range, fast curing, softness, resistance to organic solvent dry cleaning and no pollution to...

Claims

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Application Information

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IPC IPC(8): C08G69/42C09J177/06D01F6/80
CPCC08G69/42C09J177/06D01F6/80
Inventor 袁港伍驰旻黄杰李建学曹学
Owner 四川东方绝缘材料股份有限公司
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