CS219690B1 - Peptates of ethylene oxide-propylene oxide block copolymers and processes for their preparation - Google Patents

Abstract

The invention describes new phthalates suitable for the treatment of glass fibers used as reinforcement of plastics of the general formula CO/CH,CH,O/ /CH - CH,O/ /CH,CH,O/ H || 2 2 5 | E 2 2 č CH, where á + č is 2 to 30 and b is 10 to 35 and their ammonium or triethanolamine salts. The preparation of these compounds can be carried out by the action of phthalic anhydride on the corresponding ethylene oxide-propylene oxide block copolymers. The addition is preferably carried out in the melt at a temperature of 70 to 140 °C. By neutralizing the free carboxyl group with ammonia or triethanolamine, they can be converted into the corresponding salts.

Description

3

The present invention provides phthalates of block ethylene oxide propylene oxide copolymers of general formula 2196911 ' 120 [deg.] C. for 2.5 hours. Phosphate phthalate has a density of 1.0701 g at 20 ° C. cm Viscosity at 20 ° C 1832 mPa. s and acidity no. 5 rhgKOH / g.

COOH C0 / CH, CH, O / CH - CHO2 / CH, CH, O / HII 2 2 5 | 2 b 2 2 5 o ch3 where á + c is 2 to 30b is 10 to 35 and their ammonium and triethanolamine. salt. The preparation of these new compounds can be effected by the action of phthalic anhydride on block ethylene oxide-propylene oxide copolymers of the general formula "

H0 / CHOCH, O / CH - CH90 / CH - CH90 / H 2 2 5 | Where CH, j, b, n have the same meaning as in the general formula, in the melt, at a temperature of 70 to 140 ° C, which, if desired, is converted to the corresponding salts with ammonia or triethanol amine.

In order to improve the textile properties of the glass fibers, they are treated with a suitable coating which at the same time imparts them a distinctive application property. An inseparable part of such a coating is the presence of a lubricant that improves the crosslinking of the fibers. The use of polyalkylene glycols, especially polyethylene glycols, polypropylene glycol various ethylene oxide-propylene oxide copolymers as glass fiber and mineral fiber lubricants is known. The cocoon-treated fibers are dried at normal and elevated temperatures in the manufacturing process. The evaporation of the water contained within the coils occurs by convection, i.e. by migration, by flowing through the liquid and gaseous medium to form an uneven lubricating coating. This then adversely affects other textile glass fiber processing.

In the application research of the compounds of the present invention, it has been found that the phthalates described are characterized by minimal migration and are suitable as glass fiber reinforcement grippers.

The invention is further illustrated by way of example. Example 1

300 g of block ethylene oxide-propylene oxide copolymer with an average molecular weight of 1000, characterized by the above general formula, were introduced into the flask, with + c being 2, 3ab and 15.5. 44.5 g of phthalic anhydride. Upon dissolution, the temperature was increased to Example 2

500 g of block ethylene oxide-propylene oxide copolymer having an average molecular weight of 2000, which is characterized by the above general formula in which a + c is 4.6 and is 31. The batch is heated to 90 ° C and added to the flask. with 37 phthalic anhydride. After dissolution, the temperature was raised to 130 ° C for 2.5 hours. The prepared phthalate had a density of 1.0608 g at 20 ° C. cm-3, viscosity at 20 ° C 1 805 mPa. with an acid value of 31 mg KOH / g. Example 3

750 g of block ethylene oxide-propylene oxide copolymer with an average molecular weight of 3000, which is characterized by the following general formula in which a + c is 27.3 and b is 31, was introduced into the flask. with 37 phthalic anhydride. After dissolution, the temperature was raised to 125 ° C for 2.5 hours. The prepared phthalate had a density at 20 ° C of 1.0646g. cm -1, viscosity at 20 ° C 4 220 mPa. with a dry weight of 22 mg KOH / g. Example 4

The phthalate of Example 1 was converted by neutralization to a water-soluble salt. The base was added to 50 g of phthalate and the resulting salt was made up in a 500 ml water solution. The type and amount of base are listed in the table. Base (g) Ammonia (26%) 5.8 Triethanolamine 6.6 Example 5 The phthalate of Example 1 was used to prepare a lubricating composition as shown in Table Lubrication AB (% by weight) Epoxiester Emulsion (25%) 6.0 6 , 3-methacryloxypropyltrimethoxysilane 0.4 0.4 Phthalate according to Example 1 Block ethylene oxide-propylene oxide 0.5 0 copolymer 0 0.5 Laurylamidoethylpyridinium chloride 0.1 0.1 Water 93.0 93.0 An epoxy ester emulsion was used for the preparation together with the preparation of lubrication in Cs. aut. osv. No. 173 818. Migration migration was also assessed by determining the migration coefficient, which indicates

Claims (2)

Phthalates of block ethylene oxide-propylene oxide copolymers of the general formula COOH wherein A + n is 2 to 30 b is 10 to 35 and their ammonium salts and triethanolamine salts. 2. The process for the preparation of phthalates as claimed in claim 1, characterized in that the phthalic anhydride is treated with the block copolymers of the formula etylénoxidpropylénoxidové 'HO / CH ILI / CH - CH-0 / / CH, CH _o 0 / H + ² and | ² b ^{2 2} no CH ₃ wherein α, b, n have the same meaning as in point 1, in a melt at a temperature of 70 to 140 ° C, which is optionally converted to the corresponding salts by neutralization with ammonia or triethanolamine. Printed by Moravian Printing Works, plant 12, Leninova 21, Olomouc Price: 2,40 Kčs