RU2526545C1 - Glue composition for adhesive tapes - Google Patents

Abstract

FIELD: chemistry.

SUBSTANCE: invention relates to field of obtaining glue compositions, used for production of adhesive polyvinylchloride (PVC) tapes, intended for insulation and protective coating of gas and oil pipelines. Glue composition for adhesive polyvinylchloride tapes contains perchlorovinyl resin, chloroparaffin CP-470 or chlorinated α-olefins, rosin, chalk or milled marble and additionally contains plasticiser DES, basically representing modified mixture of high-boiling ethers of dioxane alcohols (4-methyl-1,3 dioxane-4ethanol) with addition of stabilisers.

EFFECT: application of invention makes it possible to increase glue stickiness, reduce area of coating detachment in cathode polarisation at temperature 20°C, cost of polymer material and extend raw material base of plasticisers.

10 ex, 1 tbl

Description

The invention relates to the field of production of adhesive compositions used for the manufacture of sticky polyvinyl chloride (PVC) tapes intended for insulation and protective coating of gas and oil pipelines.

Known adhesive composition used for the manufacture of adhesive PVC tapes, containing: perchlorovinyl resin, rosin, dioctyl phthalate and filler [patent RU No. 2196794, class. C09J 127/24, 2001] with the following ratio of components,% mass:

Dioctyl phthalate 55-66 Perchlorovinyl Resin 25-30 Pine Rosin 3-8

Activated mixture of natural zeolite and

9: 1 calcium oxide 3-7

The disadvantage of this glue is its low adhesion and a high degree of migration of the dioctyl phthalate plasticizer from the glue into the polyvinyl chloride film, which leads to a deterioration in the quality of adhesive PVC tapes.

Known adhesive for adhesive tapes [patent RU 2244729, publ. 01/20/2005] containing perchlorovinyl resin, plasticizers, rosin and a filler in the following ratio of components, mass. h:

Dioctyl phthalate 33-55 Chlorinated α-olefins, derived from ethylene oligomerization waste 11-33 Perchlorovinyl Resin 25-30 Pine Rosin 6-8 Activated mixture of natural zeolite and 9: 1 calcium oxide 0-7

The stickiness of the known adhesive is 75-92 sec, the adhesion of the adhesive tape to steel is 5-6 N / cm in width.

A disadvantage of the known composition is the low adhesion of the PVC tape sticky to steel, the use of an expensive and inaccessible component of the activated mixture of natural zeolite and calcium oxide in a ratio of 9: 1.

Closest to the claimed composition is an adhesive for adhesive tapes containing perchlorovinyl resin, plasticizers, rosin, a filler, in order to increase the adhesion of sticky polyvinyl chloride tapes, additionally contains urotropin or polyethylene polyamines, the filler contains chalk, or screenings of zeolite, or ground marble in the following ratio components, parts by weight [patent RU 2381249, publ. 03/27/2009]:

Dioctyl phthalate 33-55 Chloroparaffin HP-470 or chlorinated α-olefins, derived from ethylene oligomerization waste 11-33 Perchlorovinyl Resin 25-30 Rosin or rosin glycerin ester or resin Gerlak 3-8 Chalk, or screenings of zeolites, or ground marble 3-7 Urotropin or polyethylene polyamines 0.01-0.1

The adhesive stickiness is 70-110 seconds.

The authors additionally conducted an analysis of PVC adhesive tape for an indicator of the area of peeling of the coating at cathodic polarization at a temperature of 20 ° C according to GOST P 51164. The result is 4.3 cm ² .

The objective of the invention is to increase the adhesiveness of the adhesive, reduce the area of peeling of the coating at cathodic polarization at a temperature of 20 ° C, the cost of the polymer material and expand the raw material base of adhesives.

This object is achieved in that the adhesive composition for adhesive tapes containing perchlorovinyl resin, chlorine paraffin XP-470 or chlorinated α-olefins, rosin, chalk or marble powder, additionally contains a plasticizer DES, which is based on a modified mixture of high-boiling ethers of dioxane alcohols (4 methyl-1,3-dioxane-4ethanol) with the addition of stabilizers.

Perchlorovinyl Resin 25-35 Chloroparaffin HP-470 or chlorinated α-olefins, derived from ethylene oligomerization waste 11-33 Rosin 3-10 Ground chalk or marble 5-20 Plasticizer DES 5-60

As a result of the use of DES plasticizer in the adhesive formulation, which is based on a modified mixture of high-boiling ethers of dioxane alcohols (4-methyl-1,3-dioxane-4 ethanol) with the addition of stabilizers, the adhesive tackiness increases, the area of peeling of the coating at cathodic polarization at a temperature of 20 ° C decreases , reduces the cost of glue.

Use:

- plasticizer DES, having the following quality indicators and determined according to GOST 8728-88 "Plasticizers": flash point - 181 ° C; acid value 0.1 mg KOH / g; mass fraction of volatile substances at 100 ° C for 6 hours - 0.2%; density at 20 ° C - 1.08-1.14 g / cm ³ ; the plasticizer freezes at a temperature of -38 ° C;

- chalk brands with a mass fraction of calcium carbonate,%, not less than 95;

- ground marble according to TU 5716-002-36945182-2003;

- rosin according to GOST 19113-84.

The invention is illustrated by the following examples.

Example 1 (prototype)

In the reactor at 70-75 ° C, with stirring, a composition of the following composition is prepared, (parts by weight):

Dioctyl phthalate - 49

Chlorinated paraffins - 22.5

Perchlorovinyl Resin - 28

Resin Gerlak - 8

Chalk - 4,5

Polyethylene polyamines - 0.1

The composition is mixed for 8 hours until a homogeneous adhesive composition is obtained. The glue thus prepared is applied onto a polyvinyl chloride tape by a roller-calender method.

The stickiness value of the obtained adhesive is determined according to GOST 20477-86. The value of the peeling area of the coating at cathodic polarization at a temperature of 20 ° C is determined according to GOST P 51164. The test results are shown in the table.

Example 2. Analogously to example 1, the composition contains 5 parts by weight plasticizer DES, 33 parts by weight chlorinated α-olefins obtained from waste oligomerization of ethylene, 10 parts by weight rosin, 5 parts by weight ground marble, 35 parts by weight perchlorovinyl resin PSX-LS.

Example 3. Analogously to example 1 at the next loading of the components, parts by weight: DES 25, chlorinated α-olefins 22, chalk 5, perchlorovinyl resin PSX-LS 27, rosin 7.

Example 4. Analogously to example 1 at the next load of the components, parts by weight: DES 38, chloroparaffins 20.7, chalk 7, perchlorovinyl resin PSX-LS 25, rosin 3.

Example 5. Analogously to example 1 at the next load of the components, parts by weight: DES 47, chlorinated α-olefins 11, chalk 12, perchlorovinyl resin PSX-LS 32, rosin 6.2.

Example 6. Analogously to example 1 at the next loading of the components, parts by weight: DES 50, chlorinated α-olefins 15.2, chalk 9, rosin 5, perchlorovinyl resin PSX-LS 27.

Example 7. Analogously to example 1 at the next loading of the components, parts by weight: DES 52, chlorinated α-olefins 27, ground marble 11, rosin 9, perchlorovinyl resin PSX-LS 26.

Example 8. Analogously to example 1 at the next load of the components, parts by weight: DES 60, chloroparaffins 11, chalk 20, rosin 7.5, perchlorovinyl resin PSX-LS 33.

Example 9. Analogously to example 1 at the next load of the components, parts by weight: DES 15, chloroparaffins 33, chalk 15, rosin 4,5, perchlorovinyl resin PSX-LS 30.

Example 10. Analogously to example 1 at the next loading of the components, parts by weight: DES 39, chlorinated α-olefins 22.5, ground marble 20, rosin 8, perchlorovinyl resin PSX-LS 29.

The composition of the adhesive composition and the properties of the adhesive for adhesive tapes are given in the table.

The proposed adhesive composition provides a high stickiness of 113-204 seconds, also decreases the area of peeling of the coating at cathodic polarization at a temperature of 20 ° C 2.1-4.2 cm ² .

At the same time, the cost of PVC adhesive tape is significantly reduced due to the use of cheap plasticizer DES.

Table The composition of the adhesive composition and the properties of the adhesive Components Examples of the invention, composition, parts by weight one 2 3 four 5 6 7 8 9 10 Dioctyl phthalate 49 - - - - - - - - - Plasticizer DES - 5 25 38 47 fifty 52 60 fifteen 39 Chloroparaffin HP-470 22.5 - - 20.7 - - eleven 33 - Chlorinated α-olefins - 33 22 - eleven 15,2 27 - 22.5 a piece of chalk 4,5 5 7 12 9 - twenty fifteen - Resin Gerlack 8 - - - - - - - - - Perchlorovinyl Resin 28 35 27 25 32 27 26 33 thirty 29th Rosin 10 7 3 6.2 5 9 7.5 4,5 8 Polyethylene polyamines 0.1 - - - - - - - - - Ground marble - 5 - - - eleven - - twenty The properties Stickiness, sec 110 185 125 118 126 120 204 177 113 136 Peeling area of the coating at cathodic polarization at a temperature of 20 ° C, cm ² 4.3 3,1 3.4 4.0 2,8 2.9 2.1 2,3 4.2 2,5

Claims (1)

An adhesive composition for adhesive tapes containing perchlorovinyl resin, chlorine paraffin HP-470 or chlorinated α-olefins, rosin, chalk or marble powder, characterized in that it additionally contains a plasticizer DES, which is based on a modified mixture of high-boiling ethers of dioxane alcohols (4-methyl -1.3 dioxane-4ethanol with the addition of stabilizers) in the following ratio of components, parts by weight:
Perchlorovinyl Resin 25-35 Chloroparaffin HP-470 or Chlorinated α-olefins, derived from ethylene oligomerization waste 11-33 Rosin 3-10 Ground chalk or marble 5-20 Plasticizer DES 5-60