SU1213004A1 - Putty - Google Patents

Description

. The invention relates to the field of building materials used as a putty in the production of JcTBC finishing works and the repair of buildings.

The purpose of the invention is to increase crack resistance and reduce the water absorption of putty.

The compositions of the seal is given in table.1.

The light-mechanical parameters of the known and proposed putty are given in Table 2.

As can be seen from the table. 2 proposed putty is more crack resistant and has a low water absorption, and also has higher physical and mechanical properties than is known.

In addition, the proposed varnish forms a light-colored coating that

  rj NH-CH - C-NHCHr 0-

CBF resin

10% aqueous solution of glue

10% aqueous solution soap

black filler fine chalk

talc

Oxalic acid water

13004

promotes improved decorative surfaces.

The introduction of the CBF resin in the putty enhances its water resistance and adhesion 5 to the surfaces of building structures, which makes it possible to obtain a composition with a higher tread resistance. The CBF resin has good compatibility with all components of the composition and improves its physical and mechanical properties.

The presence in the macromolecules of the CBF resin of a triazine heterocycle a conjugated with the phenyl radical gives it thermal and thermal oxidation. telnuyu stability, which allows the use of the compound for the putty of building structures operating in elevated temperature and 20 humidity conditions. .

The structural formula of a fragment of the CBF resin is as follows:.

nTable 1

3.0. 4.0 25.0 27.0

6.0

55.0 0.03 10.97

6.5 59.0

0.08 3.42

Adhesion j kgf / cm

Crack resistance (according to the TsNIIpromzdaniy method), cycles 51.0

Water absorption for 15 days, wt.%, Not more than 1.7

Flexibility after 24 hours of drying at 10.0

Fixture hardness after 24 hours drying at, 1

table 2

2.1

3.3

3.2

3.5

95.0

75.0 100.0

0.6

0.8

0.5

5.0

3.0

5.0

0.2

0.3

0.3

Claims (1)

FILLER containing urea resin, 10% aqueous solution of animal glue, 10% aqueous solution of laundry soap, mineral? filler and water, characterized in that, in order to increase crack resistance and reduce water absorption, it contains urea-benzoguanamine-formaldehyde resin 'and additional oxalic acid in the following ratio, May.%: Carbamidobenzoguanamine formaldehyde resin (CBP resin) 3-4 10% aqueous solution of animal glue 25-27 10% aqueous solution of laundry soap Mineral filler Oxalic acid water 6-6.5 55-59 0.03-0.08 The rest * • 1213004