SU1217869A1 - Compound for producing filled polyurethan - Google Patents

Description

112

This invention relates to the preparation of cold-cured polymer compositions, forming polyurethanes, which can be used as polymer coatings, adhesive sealants, etc.

The aim of the invention is to increase the strength and adhesive properties of polyurethane, as well as lowering the curing temperature of the composition.

Example 1.. Synthesis of copper-containing aerosil. 50 ml of an ammonia complex of copper with a ratio of Cu: NHj of 1: 8, obtained by mixing 0.1 M of an aqueous solution of anhydrous copper chloride (11) with a saturated non-aqueous solution of ammonia, is added to 1 g of A-175 aerosil, previously dried at - live for 1 h, then filtered, washed with a non-aqueous solvent until the chlorine ions disappear in the washing solution and dried at 80 s to constant weight. For the preparation of aerosil with a copper content of more than 1.8 wt.%, Other amines are used.

Copper-containing aerosil has a satisfactory surface of 175 m / g, the content of copper ions 0.5-4 wt.%

Example2. To 1g of dried ri 120 C of A-175 grade aerosil containing 1.0 wt.% Grafted to the surface of divalent copper ions (0.01% based on the composition), 89 g of polyester 11-2200 are added. the esterification of adipic acid with diethylene glycol and glycerin, mix and vacuum for 3 hours. hours The mixture is then cooled to room temperature, 10.0 g of 2,4-toluene diisocyanate (2,4-TDI) are added, vacuum is removed until air bubbles disappear and poured into metal molds. The viability of the composition is 2 hours, the curing time at room temperature is 20 hours. The resulting polymer is a translucent mass of light green color.

Example K2g of dried at Aerosil containing 0.5 wt.% Grafted copper ions (0.01% based on the composition) was added 88 g of polyester G1-2200, evacuated for 3 hours. To cooled to room temperature, the mixture was 78692

10 g of 2,4-TDI and then proceed as described. The pot life of the composition is 2 hours, the curing time at room temperature is 12 hours.

J Example4. Q4, Og dried at 120 ° C aerosil containing 1.0% by weight of grafted copper ions (0.04% based on the composition) was added 86.5 g of polyester P-2200 and 9.5 g

0 2,4-TDI, as described in example 2. The viability of the composition is 1.5 hours, the curing time is 20 hours, the color of the obtained polymer is bluish-green. Example5. K1,0g aerosil,

5 containing 4.0 wt.% Grafted copper (0.04% per composition), add 89 g of polyester P-2200 and 10 g of 2,4-TDI, as described in Example 2. The viability of the composition is 1.5 hours, the time From 20 to 15 h, the color of the obtained polymer is bluish-green.

Example 6. A mixture is prepared containing 8.0 g of aerosil with a copper content of 1 wt.%, 84 g (0.08% in

25 based on the composition of polyester

P-2200 and 38 g of 2,4-TDI according to the described method. Viability, (COMPOSITIONS 1 h, curing time 7.5 h, color greenish blue.

3Q EXAMPLE 7. Similarly to example 2, a composition was prepared containing 6 g of aerosil with a copper content of 1 wt.% (0.06% based on the composition), 84.6 g of polyester P-2200 and 9.4 g 2,4-TDI. The viability of the composition is 1 h, the curing time is 8 h., The color of the obtained polymer is greenish blue.

Example 8 (comparative). 8 g of Aerosil containing 1.2% by weight of copper (0.096% based on the composition), 84.6 g of P-2200 polyester and 9.4 g of 2,4-TDI are mixed as described. The composition obtained after mixing the components has a gel-like consistency. The viability of the composition is 0.25 h, the curing time is 6 h, the color of the obtained polymer is blue. PRI me R 9 (comparative), Mix 1 g of aerosil content

° copper 0.5 wt.% (0.005% based on the composition), 89 g of polyester P-2200 and 10 g of 2,4-TDI, as described. The viability of the composition is 3 hours, the curing time is 40 hours, and the color is pale green.

For comparison, similar compositions were prepared containing unmodified aerosil (example

five

0

five

11, as well as the control composition

without filler (example 10).

I

The tables show that the proposed composition has good viability and is capable of curing at room temperature, while

Composition

Polyurethane properties

22.0 2010.82 0.084 4.2

3 2.0 1210.30 0.043

1217869 .4

time as known is cured only when

The strength of PU indicators on the basis of the proposed composition is about g 4 times higher than that of known PUs, which is of great importance when operating from non-coatings.

Table

Table 2

20.5 software 21.8 255

7.4 6.4

 2.0

36

"M

 With this force, the sample breaks. Curing is at 60 ° C.

Editor T. Parfenova

Compiled by V.Mkrtychan

Tehred J. Kastelevich Proofreader M. Maksimishinets

Order 1080/30 Circulation 644 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Branch PPP Patent, Uzhgorod, st. Project, 4

Continuation of table 2

6.5

620

5.4

Claims (1)

No. 670603, class. With 09 J 3/16, 1979.. COMPOSITION FOR PRODUCING FILLED POLYURETHANE, including adipic acid, polyethylene glycol and glycerol complex polyester, isocyanate component and silicate filler, characterized in that, in order to increase the strength and adhesion properties of the polyurethane, as well as lower the curing temperature of the composition, it contains Aerosil silicate filler containing bivalent copper ions in an amount of 0.010.08 wt.% calculated on the composition, in the following ratio, wt.%:. ·. Polyester on the specified basis 84-89 Isocyanate component 8-10 Aerosil containing bivalent copper ions in the specified amount of 1-8