Epoxide composition

FIELD: chemistry.

SUBSTANCE: invention relates to preparation of epoxide compositions for making high-strength polymer materials. The composition is based on a mixture of di- and polyepoxy resins and modifiers. The modifiers are products of epoxidation of 2-4-atomic alcohols in a ratio from 99:1 to 1:99. The curing agent is a product of reaction of an acid (A) - a compound of general formula R2-R1-COOH, where R1 is an aliphatic, cycloaliphatic, aromatic hydrocarbon or heterocyclic fragment, R2 is a substitute - Cl, -F, -NH2, -NH-, -OH, -CH=CH-, -CH=CH, amine (B) - di- or polyamine of an aliphatic, cycloaliphatic or aromatic type together with a polyatomic alcohol containing 2-6 hydroxyls in one molecule (C). The ratio A:B:C ranges from 70:29:1 to 20:70:10. The components are mixed in a medium of a di- or tricarboxylic acid ether and a monoatomic alcohol at temperature of 20-80°C for 10-120 minutes. The obtained ternary reaction product is mixed with a eutectic mixture of aromatic amines with melting point from -10°C to 90°C with the ratio of the reaction product to the eutectic mixture of aromatic amines ranging from 5:95 to 95:5. The composition contains the following (pts.wt): resin part -100, curing agent - 20-100.

EFFECT: invention enables to obtain compositions with a longer working life and a low peak temperature when curing.

2 tbl, 8 ex

 

The invention relates to the field of production of epoxy compositions intended for the manufacture of high-strength polymer materials with high deformation resistance and can be used as a binder in reinforced plastics, aerospace, shipbuilding, chemical, electrical and other industries.

The closest prototype of the claimed invention is the family of epoxy compositions based on mixtures of epoxy resins and products of the epoxidation of aliphatic 2 - 4-atomic alcohols using as hardeners mixture of amines with salicylic acid (see Vasaputi, Kay. Physico-mechanical properties of epoxy polymers and plastics, Kiev, Naukova Dumka, 1986, 26-27).

The drawbacks of such compositions are low viability during processing, high peak temperature of the exothermic reaction during curing in large masses of material, and relatively low strength properties of the products obtained at temperatures above 100°C.

The aim of the present invention is an epoxy composition with improved technological properties - high viability during processing and a reduced peak temperature of the exothermic reaction during hotwired the tion, as well as increasing static strength properties of the obtained polymers after cavitation exposure to water and to increase the specific toughness. This objective is achieved in that the claimed composition based on a mixture of epoxy resins and products of the epoxidation 2-4 atomic alcohols in a ratio of from 99:1 to 1:99 as hardener contains the product obtained by the interaction of the acid (a) and amine (B) together with the polyhydric alcohol with a hydroxyl content of from 2 to 6 in a single molecule (In) in the ratio a:B:70:29:1 to 20:70:10 by mixing the components in the environment ether di - or tricarboxylic acid and a monohydroxy alcohol at a temperature of from 20 up to 80°C for 10 to 120 minutes using the acid compounds of the General formula R2-R1-COOH, where R1- aliphatic, cycloaliphatic, aromatic hydrocarbon or heterocyclic fragment, R2- Deputy - Cl, -F, -NH2, -NH-, -OH, -CH=CH-, -CH=CH2as Amina use a di - or polyamine aliphatic, cycloaliphatic or aromatic type, and the triple product of the interaction combined with eutectic mixture of aromatic amines with a melting point of from -10°C to +90°C with a ratio of the product of the interaction : eutectic mixture of aromatic amines from 5:95 to 95:5, and the HDMI is tion contains mass parts:

the resin part 100

hardener - 20÷100.

Example 1. Getting hardener.

In a reactor equipped with heating, cooling and stirring, download 45 parts by weight of TRANS-4-aminomethyl-cyclohexane-1-carboxylic acid (A)containing in its structure cycloaliphatic hydrocarbon fragment (R1and zamestitel - CH2-NH2, (R2), and then loaded sequentially 70 mass parts dibutylamino ether decanedicarboxylic acid, 55 parts by weight of technical product - paraaminobenzoic(B) and 5 parts by weight of glycerol (b) and at a temperature of 45°C and stirred for 65 minutes with the stirrer speed of 1000 rpm. To thus obtained the triple product of the interaction type eutectic mixture of aromatic amines of metaphenylenediamine (MPDA) and 4,4 diaminodiphenylmethane (DADPM). The ratio of MPD: 4,4 DDFM 60:40. The triple product of the interaction and the eutectic mixture charge in the ratio of 50:50 and stirred at 45°C and 1000 revolutions per minute for 20 minutes.

A composition.

In another reactor equipped with a heater and stirrer, load 70 mass parts of the epoxy Dianova resin ED-20, and 30 mass parts of the product of the epoxidation of trivalent alcohol-atrial. Resin EET-1 with a content of 25% of the epoxy groups. The mixture was stirred at 70°C for 20 minutes, 60 revolutions per minute, the Le and loads 60 mass parts of hardener and at 70°C and stirred for 65 minutes.

Examples 2-8 are carried out by changing the components and options in accordance with table 1.

The properties of the compositions of examples 1-8, in comparison with the prototype, shown in table 2, the data of which support its benefits.

Table 2
Properties of the inventive epoxy compositions of examples 1-8 in comparison with the prototype.
№ p/pName of indicatorThe value of indicators examples
12345678the placeholder
1The viability of the composition at a temperature of 60°C. in a mass of 200 g, min80120908075140160140 50
2The peak temperature of the exothermic curing in the mass of 1000 g (same size cube)160150180180190140140180240
3Maintaining strength characteristics after cavitation exposure to water 60 days
ultimate strength in static bending, %95989698100961009845
- compressive strength, %100 9810010096100989652
4Specific impact strength, kJ/min504548525442464815÷20

Epoxy composition based on a mixture of di - and polyepoxide resins and modifiers - products of the epoxidation 2÷4 atomic alcohols, characterized in that the resin and the modifier is used in a ratio of from 99:1 to 1:99, and as a hardener is used a product obtained by the interaction of the acid (a) and amine (B) together with the polyhydric alcohol with a hydroxyl content of from 2 to 6 in a single molecule (In) and in the ratio a:B:70:29:1 to 20:70:10 by mixing the components in the environment ether di - or tricarboxylic acid and a monohydroxy alcohol at a temperature of from 20 to 80°C for 10 to 120 min using the acid compounds of the General formula R2-R1-COOH, where R1- aliphatic, cycloaliphatic aromatice the cue hydrocarbon or heterocyclic fragment, R2- Deputy - Cl, -F, -NH2, -NH-, -OH, -CH=CH-, -CH=CH2as Amina use a di - or polyamine aliphatic, cycloaliphatic or aromatic type, and the triple product of the interaction combined with eutectic mixture of aromatic amines with a melting point of from -10°C to 90°C with a ratio of the product of the interaction : eutectic mixture of aromatic amines from 5:95 to 95:5, and the composition comprises, in parts by weight:

the resin part100
the hardener20÷100



 

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2 tbl, 7 ex

Epoxide compound // 2472820

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7 cl, 3 tbl, 3 ex

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15 cl, 16 ex

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30 cl, 26 ex

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14 cl, 11 tbl, 36 ex

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9 cl, 5 tbl, 18 ex

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EFFECT: improved composition properties.

8 cl, 2 tbl

FIELD: chemistry.

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EFFECT: proposed engineering solution enables to widen the raw material base of the rubber industry, increase the strength of the bond between rubber and textile and metallic reinforcing materials, and improve physical and mechanical properties of vulcanising agents.

3 ex, 6 tbl

FIELD: chemistry.

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EFFECT: invention enables to obtain a heat resistant peroxide-curable compound with a halobutyl ionomer with high content of multi-olefin and to obtain a moulded article from said compound without inorganic impurities.

13 cl, 2 tbl, 4 ex

FIELD: chemistry.

SUBSTANCE: polyurethane composition contains a prepolymer - a product of reacting 1.0 mol of polyethylene butylene glycol adipate with molecular weight 2000 and 2.2-2.3 moles of a mixture of 2,4-toluene diisocyanate and 2,6-toluene diisocyanate in ratio 80:20, a hardener based on 3,3'-dichloro-4,4'-diaminodiphenyl methane and low-molecular polyesters with molecular weight 400-1000 in weight ratio 35:65, as well as an oxypropylated ethylenediamine catalyst and a dye.

EFFECT: improved processing and operational characteristics, longer working life of the composition, adhesion strength and endowing the composition with the required viscosity.

4 tbl

FIELD: oil and gas industry.

SUBSTANCE: suspension-emulsion composition of anti-turbulent additive contains the following, wt %: polyacrylamide with "м.м." 5.5·106 and particle size of not more than 200 mcm - 30-20, polyethyleneglycol - 11-13, stearic acid - 2, ethanol - 42-50 and glycerin - 15.

EFFECT: anti-turbulent additive has decreased viscosity and provides reduction of hydrodynamic friction in oil flow.

8 ex

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