SU973570A1 - Polymeric composition - Google Patents

Description

54) POLYMER COMPOSITION

The invention relates to the chemical industry, namely, the composition of compositions based on oligoester acrylate (UAE) or a mixture of oligo ether acrylates with polyvinyl chloride (PVC) or copolymers of vinyl chloride (VC).

The composition is intended to be applied to the surface of any material (metal, wood, plastic, ceramics, etc.) in order to protect it from exposure to aggressive media (organic solvents, acids, alkalis), including at elevated temperatures, without pre-treating the material with an adhesive,

The known polymer composition contains, in wt%: paste-making PVC 15-85, polymerizable organic compound 0.1-80 d low (molecular plasticizer 0-50, initiator 0-8, stabilizer 0.01-4, and 0- 50; filler 0-50. As a polymerizable compound, bisallylcarbonate-triethylene glycol, triallylphosphate, triallylcyanurate and diacrylatetriethyleneglycol are used. This composition is used to join steel plates overlap 1.

The disadvantage of this composition is low physical and mechanical properties.

The closest to the technical essence and the achieved effect to the proposed is the Kloyev polymer composition, consisting, wt..ch .: of the BHO or copolymer BX 5-18, OEA 55-80, the stabilizer 0,2-ОЬ,

10 initiator 0.5-1.3, filler 2-40. As OEL, triethylene glycol-o-, n-dimethacrylate (TGM-3), s, i) -methacryl- (bis-triethylene glycol) | phthalate MGF-9 and oC, and; -methacryl (bis-5; lnglikol) phthalate (MGF-1). This composition is intended for combining sheets of profiles, pipes and other products obtained on the basis of co-polymer-oligomeric compositions. Curing glue cbm

The 20 position (glue line) is characterized by an increased heat resistance of 117-138 ° C, an increased tensile strength — 250-400 kgf / cm, and other properties 12.

25

However, the adhesion strength to metal, which is determined by the breaking stress at break, is not higher than 67 kgf / cm.

The purpose of the invention is to improve the adhesion strength of a polymer coating based on the composition to the surface to be protected while maintaining the increased thermal and chemical resistance of the coating. This goal is achieved by the fact that a polymer composition containing a homo- or a copolymer BX, an oligoether acrylate, a stabilizer and a polymerization initiator, contains d, and -dimethacyl iso-phthalate (MECP) or its mixture as an oligo ether an oligo ether acrylate selected from the group consisting of triethylene glycol-o, s-dimethacrylate, sb, and) methacryl- (bis-triethyleglycol glycol) phthalate, ° C (bis-diethylene glycol) phthalate, prc the following ratio of components, May, hours: homo- or with polymer vinilhlorida10-40 o1, w-bis {dimetakril--tri-hydroxyethyl isocyanurate or smas with oligoester acrylates selected from hydrochloric specified group. 60-90 Stabilizer 0.15-3.0 Polymerization initiator. Oub-2,0 as copolymers using copolymers BX: with methyl acrylate (G A – Z — methyl acrylate content 3.%, MA-20, methyl acrylate content 20 wt.%}, With BA-15 vinyl acetate, vinyl acetate content 15 wt.% Stabilizer - a mixture of two basic lead stearate and triaxial nrgo lead sulfate, a mixture of stearate in barium and cadmium 7 of a mixture of lead glut with calcium stearate and others, the initiator of polymerization is dicyclohexyl peroxydicarbonate (DCPC), peroxide

According to the invention PVC.10

Oligoether acrylate METsF 90

Dibasic stearate

lead (DOSS) 0.075

Tribasic sulphate

lead (TOSS) 0.075

9 benzoyl, di-2-ethylhexyl peroxydicarbonate, etc. Use in the composition of the proposed polymer potential; and OEA METsF, or its mixture with OEA (TGM-3. mGF-1, MGF-9, MDF-1), allows to significantly increase the adhesive strength of the compositions to the metal. The resulting coatings are characterized by increased heat resistance (according to Vic) - up to 125-130 ° C and chemical resistance to organic solvents and hot water. Example. 10 ma.ch. PVC K-70, 0.075 mac. dibasic lead stearate, 0.075 mach. tributary sulfate evintsa emeshivat with 10 mach. OEA METsF in pawet at room temperature on a small spray machine. The resulting paste is evenly distributed in a mixing tank, equipped with a stirrer, in 80 mas. Hours. MEZF e pre-cooked. 0.6 mue.h. dicyclohexyl peroxydicarbonate. The mixture is sprayed onto a metal surface with a spray gun. The polymer coating is heated by hot air (100–200 ° C) for several minutes. The adhesion strength of the polymer coating is determined 110 TOAST 14760-69. The heat resistance of the polymer is 125 ° C (according to Vic). The polymer coating has a chemical resistance to organic solvents and hot water. Examples 2-33. The compositions are given in table. The methods for mixing the components are similar to those in Example 1. In each of the examples, (co) polymer and stabilizer are initially mixed with the amount of OEA in which the polymer is taken (1: 1). Examples 34-41 are provided for comparison. Methods of mixing components are similar to example 1. In table. The values of adhesion strength of polymer coatings, characterized by breaking stress at separation, are given.

Table continuation

TGM-3 DOSS TOSS DCPC

four

MA-3

Metsf.

KGF-9

DOSS

TOSS

DCPC

five

MA-3

Metsf

MDF-1

DOSS

TOSS

DCPC

6

MA-3

Metsf

MGF-1,

DOSS

TOSS

DCPC

7

MA-20 METF DOSS TOSS

pdeg

eight

MA-20 METsF

tgm-e

DOSS

Table layout

132

129

133

129

108

142

Table continuation

Continuation table

Table continuation

Table continuation

Claims (1)

Claim Polymer composition containing homo - or copolymer of vinyl chloride, oligoether acrylate, stabilizer and