SU789544A1 - Selfdamping polymeric composition - Google Patents

Description

(54) SELF-ABLASTING POLYMER COMPOSITION The invention relates to chemical technology and relates to the preparation of polyvinyl chloride compositions based on them, which are widely used in npoNbJiuneHHTH as various products: pipes, film materials / decorative facing, etc. Known is a cross-linking composition containing polyvinyl chloride (PVC), the cross-linking agent is 4-allyl-4,5-ethoxypenten-1 and initiator ij. However, the composition does not have sufficiently high physicomechanical properties. 15 The closest technical solution is a self-extinguishing polymer composition comprising polyvinyl chloride, a crosslinking agent — trichloroacetic acid allyl ester and an initiator — di-tertbutyl sulphate. This composition has high physicomechanical properties 2. However, such a composition has insufficient light and weather resistance. The purpose of the invention is the improvement of net and the weather resistance of the composition and expansion of the raw material base of the crosslinking agents. Thu on -2 –x co -o and ac, 1o chl The goal is achieved by the fact that, as a cross-linking agent, the kozzi contains 1-chloro-3-allyloxy-hydroxymonochloroacetylpropane or 1-chloro-3 allyloxy-2-oxytrichloroacetylpane. The ratio of components in the position is as follows, parts by weight: Polyvinyl chloride 85-90 1-Chloro-3-allyloxy-; -oximonochl oracetylpropane or 1-chloro-3 allyloxy-2-oxytrichloroacetylpropane9, 99-14.98 Peritoxyl nitrate, 0-1-0-0 , 02 At the same time, 1-chloro-3-allyloxy-2ximonochlorauetyl propane CH „CH-CHL-0-C11l-.CH-CH5C 22 Bosoc4c1 (1) 1-chloro-3-allyloxy-2-oxitrichloroethylpropane, -sn- Cn, -o-cn-cc-2 C 2 t g OOS C) C are derived by a condensation reaction (1p-3-allyloxypropanol-a-2 with monotrichloroacetic acids) without an acid catalyst.

Some physico-chemical constants of the synthesized unsaturated chlorine-containing compounds (1) and (.1 I) are presented in Table. 1. The synthesized compounds (I) and (II) are colorless liquids with a specific odor, well soluble in organic solvents — benzene, toluene, acetone, carbon tetrachloride, alcohols

and ti n.

the process of modifying PVC with unsaturated chlorine-containing compounds (I) and () 1) in the presence of 0.01 weight parts. ditretbutil peroxide initiator (DTBP) is carried out in the process of thermal plasticization on the microvalve for 5 minutes.

Example. 90 weight.h. PVC with constant Fikentscher-70, mixed with 9.9 parts by weight. 1-chloro-3-allyloxy-2 hydroxymonochloroacetylpropane, taken as a crosslinking agent, and 0.01 parts by weight. initiator - ditretbutil peroxide (DTBP). The modification was occluded during the thermal plasticization process on the microvalts at 150 ° C for 5 minutes. The resulting film is pressed at a pressure of 50 kg / cm for 30 minutes, then cooled.

Example 2, Example 1, prepared a PVC composition in the following ratio of components, parts by weight: PVC 85, 1-chloro-3-allyloxy-2-hydroxymonochlorine cetylpropane 14.9 DTBP 0.01.

Example 3. In Example 1, a PVC composition was prepared in the following ratio of components, parts by weight: PVC 90, 1-chloro-3-allyloxy-2-oxytrichloroacetyl propylene 9.9, DTBP. 0.01.

Example 4. According to example 1, gratov t PVC - composition in the following ratio of components, parts by weight: PVC 85, 1-chloro-3-allyloxy-2-oxytrichloroacetylpropane 14.9, DTBP 0; 01

, ExampleB. According to Example 1. PVC is prepared - a composition in the following ratio of components, parts by weight: PVC 80, 1-chloro-3-allyloxy-2-oxytrichloroacetylpropane 20, DTBP 0.01.

Example 6. In Example 1, a PVC composition was prepared in the following ratio of components, parts by weight: PVC 85, 1-chloro-3-allyloxy-2-hydroxy-mono-acetylpropane 14.98, DTBP 0.01.

The properties of the composition are as follows: the strength at stretching, 540 kgf / cmg, the relative elongation at break of 210%.

Example. In Example 1, a PVC composition was prepared in the following ratio of components, parts by weight: PVC 87.5, 1-chloro-3-allyloxy-2-hydroxymonochloroacetylpropane 12.49, DTBP 0.01.

The properties of the composition are as follows: tensile strength at stretching is 660 kgf / cm, relative elongation at break is 230%.

Example 8. In Example 1, a PVC composition was prepared in the following ratio of components, parts by weight: PVC 87.5, 1-chloro-3-allyloxy-2-oxytrichloroacetate propane 12.49.

The properties of the composition are as follows: tensile strength at stretching of 650 kgf / cm, elongation at break 270%, glass transition temperature, gel fraction 90%.

The results of physico-mechanical tests of modified PVC-compositions of unsaturated chlorosode; Table 2 shows the common lines (|) and (||), as well as the well-known PVC compositions. 2

Mode of processing compositions.

Mixing is carried out for 40 minutes.

Rolled at 150 s for 5 min, while the gap between the rolls0, 5.

Pressing is carried out at 160 ° C for 30 minutes under a pressure of 50 kgf / cm.

. T a C5 l and c a

l.CHjSCH-CHj-O-CHjCH-CHjCl 109-1101.4719

QCOCH CI L-CH CH-CH. -O-CHY-CU-SN. C 123-125 1.4796 - I ici OCOC-CI C 1.2391 51.29 51.93 31.2 11.9 80.7 1.3672 61.26 61.61 48.0 9.1 69.9

Tensile strength, kgf / s

Relative elongation at break,%

Glass transition temperature, C

Pour point

Gal fraction,%

Burning time after removal from the flame, with

Tensile strength

when stretched

kgf / cm

Relative elongation at break,%

Colour

Claims (2)

Invention Formula A self-extinguishing polymer composition, including polyvinyl chloride, a crosslinking agent, and initiator, ditretbutil peroxide, characterized in that the composition contains 1-chloro-3-allyloxy- to improve the light and weather resistance of the composition and expand the raw material base of the crosslinking agents. 2-hydroxymonochloroacetylpropan or 1-chloro-3-allyloxy-2-oxytrichloroacetylpropane gfi the following ratio of components, weight, including: table 2 600 520 400 530-650 540 2408080-185 210 160 443936-43 46 47 139133130-140 142 145 856059 -80 88 77 Also Instantly pretentiously self-arresting 440 420-550 535 565 625 110 25 85 20-60 Light co-Brown Light brown-brown wa neva Polyvinyl chloride 85-90 1-CHLOR-3-c1-LILOXY-2-hximonochloroacetylpropane or 1-chloro-3-allyloxy-2-oxytrichloraacetylpropane 9.99-14.98 Ditretbutyl peroxide0, 01-0.02,. Information sources, taken into account in the examination 1, USSR Author's Certificate I 489763, cl. C 08 1, 27/06, C 08 K 5/15, 27.04.73. 2. USSR author's certificate 628150, c. 08 L 27/06, C 08 K 5/10, 18 ..