SU854949A1 - Method of treatment of thermoplastic polymers - Google Patents

Description

The invention relates to a method for treating polymers by applying to them or introducing into the mass of nitrogen-containing cyclic compounds in order to improve the antistatic properties. The known method of dielectrization of thermoplastic polymers is by applying to the surface or introducing into their mass nitrogen-containing cyclic compounds of bis-salts of LIA benzimidaz, for example dichloride-1,4-di (N -2 undecyl-3 - | b-hydroxyethyl benzimidazolium-butane, etc.) The introduction of such compounds into the polymer polymer, the specific surface electrical resistance (pd) of the samples is 2,, and .OO at a relative humidity of 65%, and at the surface application of Pd - 6.9.10 2, 3. Ohms, respectively, l. The closest the technical essence and the achieved effect The proposed invention is a method according to which nitrogen-containing cyclic compounds, for example, piperidinium bis-salts, are applied to the surface or introduced into the polymer mass as an antistatic agent. When introducing polymer into the polymer mass, such compounds: 1., 2.10 ° Ohm at 20 ° C and a relative humidity of 657 and with a surface application of p 6.0.10-2.5. 10 ohms, respectively 2. However, this method produces very expensive products due to the fact that the process of obtaining bis-salts quite complicated and to get them The present audio requires expensive raw 1,4dibrombutan. The purpose of the invention is to reduce the cost of production and reduce the electrification of thermoplastic polymers. The goal is achieved by the fact that in the method of processing thermoplastic polymers by applying to the surface or adding to the mass of piperidinium salts, the latter uses a compound of the general formula H 4-i. 0 v / Chg, where RJ is naphthenyl or C nRj, is OXYETSH1 (CH2CH2 0), H, where n "1-30, dHjciHeOd is C 1ng- / CH CHgOfi I R - KIL or Aaftenyl or -alkyl A-ce - BG-, s; but;, seo;, dn ,, 9-, dncS H45o (dn ,,), ro, or ai.yl-oso (dn 2. yes (where rn-o-ib. When applied superficially 0.54, 0% - solutions of piperidini salts on polymers, the specific surface electrical resistance (5 / samples is 3.4 × 10 -1, 2.10 ° 0 m ave ZOistl and relative humidity. Polyethylene samples with internal introduction of 0.5-4.0 wt.% piperine salts have a p5 of 6.0., 2. Ohms at 20 ± 3 ° C and relative humidity, the yield strength during stretching (t) is 105-248 kgf / unprepared for tensile strength (Gp) 112-139 kgf / cm and relative elongation at rupture {) 250-684%. Polymer samples, according to those obtained by the proposed method have better antistatic properties compared to polymer samples treated with antistatic agents of the type Alcamone {PQ 3.3.10 Ω with internal introduction) SOC and compared with the known (. 10 Ohm) 2. Antistatic agents according to the invention are applied to the surface polymers from solutions with a concentration of 0.5–4.0 wt. At the same time, target additives — dyes, stabilizers, plasticizers, etc. — can be used. Antistatics can be introduced into the polymer melt by conventional methods: on shafts in a plastic mixer. Pa or in an extruder. Example 1 Disks with a diameter of 50 mm and a thickness of 1 mm of low-density isopolyethylene (PENP) for 20 seconds in a 4.0% solution of 1-hydroxyethyl-1-butylpiperidinium bromide in ethyl alcohol and then dried at room temperature in a vertical position 2 h. PC was treated in this way for samples with 1.5.10 Ohm at 20 ± 3 ° С and relative humidity of 65t5%. Both p and Me p 2. Disks with a diameter of 50 mm and a thickness of 1 mm made of impact polystyrene (UE) are immersed for 20 s in a 2.0% solution of 1-hydroxyethyl1-1-octadecylpiperidinium bromide in ethanol and then dried at room temperature in an upright position for 2 hours; samples of 3.8.10 Ω processed in this way at 20 ± 3t and relative humidity 65 5%. Example 3. Disks with a diameter of .50 mm and a thickness of 1 tiM made of high density polyethylene (HDPE) are immersed for 20 s in 2, and a% solution of 1-hydroxyethyl-I-nonylpiperidinium bromide in ethanol and then dried at room temperature in a vertical the 2 o'clock position. The Pd of the samples treated in this way is 1.4.10 ohms at relative humidity. Example 4. Disks with a diameter of 5U mm and a thickness of 1 mm from block polystyrene (PSB) are immersed for 20 s in a 2.1)% solution of 1-hydroxyethyl-1-nonylpiperidinium bromide in ethanol and then dried at room temperature in a vertical position 2 h, p samples processed in this way 4,5.1 and Ohms at 20 ± 3 С and relative humidity 65 ± 5%. Example 5. Disks with a diameter of 50 mm and a thickness of 1 mm of polymethyl methacrylate (PMMA) are immersed for 20 s in a 2.0% solution of 1-hydroxyethyl-1-nonylpiperidinium b1) omide in ethanol and then dried at room temperature in an upright position 2 h, PJ samples treated in this way with 6.2.10 ohms at a relative humidity of 65 ± 5%. Example 6. Disks with a diameter of 50 mm and a thickness of 1 mm from a copolymer of styrene with methyl methacrylate (MS) are immersed for 20 s in a 2.0% solution of 1 -oxyethyl-2-nonylpiperidinium bromide in ethanol and then dried at room temperature in vertical position 2h. Rd of 8.6.10 Ohm samples treated in this way with a relative humidity of 65 ± 5%. Examples 7-25. Mono-peridini salts are applied to the surface of the polymers as in Examples 1-6. The results are shown in table 1. Example 26. Low-density polyethylene is mixed with 1 wt.% Bromide M-pentadecyl-M-hydroxyethylpiperidine on a roller at min. ps samples of 3.2.10 ° Ohm at C. and relative humidity and BT 119 kgf / cm, p 121 kgf / cm and 684% ... EXAMPLE 27. Low polyethylene. This density is mixed with 4% by weight of bromide M-Pentadecyl-M-oxystilphenide on the rollers at I355 ° C for 7 minutes. PC, samples of 1.4-10 Ohms at 20 ± 3C and a relative humidity of 105 kgf / cm2-, (Sr112 kgf / cm-and 422% Example 28. High-density polyethylene is mixed with 4 ma.X B of N-pentadecyl-hydroxyethaneshyperidinium rolls at 7 minutes; Rd of samples 1,4. at 20 ± 3 s and relative humidity 65 + 5% and (J - 248 kgf / cm, Szr 122 kgf / cm C 120%. 85

Table} 96 Examples 29-34. The salts of Shsheridy and O4 are spiked with low density polyethylene as in Examples 26-27. The properties of the obtained samples are given in Table 2, Examples 35-38. Salts of piperidini mixed with high density polyethylene as in example 28. The properties of the obtained samples are shown in table 2. The present invention simplifies and makes cheaper the method of reducing the electrization of thermoplastic polymers. And it can be used to reduce the electrification of polyethylene, polystyrene, etc., and products based on them in the form of sheets, measuring parts and other devices, containers, designed for operation under conditions when the accumulation of static electricity charges is unacceptable. Using the proposed method for these purposes gives an economic effect of 200 r. per 1 kg of antistatic due to the exclusion of expensive raw material 1,4 dibromobutane compared with the known.

Bromide M-undec-M-0.5

ENP (cyclohexylacetoxy) -ethyl-piperidini

Bromide N-nonyl-N-p11 (cyclohexne acetoxy) -ethylpiperidini 2.0

Bromide M-Pentadecyl-Mp - (cyclohexylacetoxy) -ethylpiper. Nedini 0 5

ten

1,2.10

5.7.10

ten

3.5.10

N-nonyl low N-hydroxyethylpiperis polyethylene bromide

Dynia's flesh, 4.0

The same Bromide s undecchl-.

-N- p - (cyclohex silacetoxy) -ethylpiperidini 4, 0

N-nonyl-Cr (cyclohexylacetoxy) -ethylpiperidgNIN bromide}, 0

N-nonyl-N-piperidyl ethyl ester naphtha bromide 0.5

Para-toluenesulfonate-CH-methyl-CH-jb (cyclohexylacetoxy) - ethylpiperdini 1, 0

N-naphthenyl-M-hydroxyethyl (, 30) piperidinium chloride

N-Nonylhigh-N-p- (piperidiplotnos-lacetoxy) ethyl Tiji-piperidini polyethylene Bromide

The same N-naphthenyl-M-piperidyl ethyl ester stearic acid 4.0 nitrate

 N-naphthenyl-N-oxyethyl (III) -piperidinium 4 dimetaphosphate

 N-octadecyl-N-oxy-ethylpyridine stearate. 4.0

1.7.10 109 122

520

1.9.10 ° 103 138

566

6.0. 123 139

580

4.2.10 144 138

574

7.6.10 109 134

530

9.0.10 J05 124

503

2.1. 237 120

172

1.0.10 238 134

260

270

6.0.10 242 131

9.6.10 235,130

230 P of the invention. Formula. A method of treating thermoplastic polymers by applying to the surface or adding to the mass of piperidinium salts, characterized in that, in order to reduce electrification and reduce the cost of production, the compounds of general forms, O R: XJ where And, - maftenip or Cd-C Z-alkyl, or (, Kd hydroxyethope 1-30), group

CH CH occHj -Q, SNHyNgObsn Kz

about 85

3. Handbook of plastics. M. Himi, 1969, v.2, p.445. 12 where R is C., Cg is akyl or naphthencle or GI-alkyl; A-sow; a o ;, sgo;, syz504, CHSS d505, CCH, P04, SjV-b, go. Acyl-CCA (CH2) o1CH, where m is 0-16), Sources of information that have been taken into account during the examination 1. The author's certificate of the USSR 410047, cl. From 09k 3/16, 15.P.72. 2. Authors certificate of the USSR 427961, cl. From 09k 3/16 09.06.72 (prototype).

Claims (1)

Claim 854949 12 '. where R-j is C ^, -Cjg is alkyl or naphthenyl or C "-Q- alkyl; A "-Se" BD E ^ O ^ amiss, 5O4 CH _3, CH ^ CJ ^ SO ^ CCH ^ PO}, with _s n ₅ sou A method of processing thermoplastic polymers by applying to the surface or introducing into the mass of piperidinium salts, characterized in that, in order to reduce electrification, and reduce the cost of production, as - piperidinium salts are used compounds of the General formula ί "0 A' L R <RaJ, where ^T 1¾ - ΉΗφτβΗΗΠ or Sde-Cjg-alkyl, R ^ - oksietip (CH ^ H ^ SNdO where η 1-30), group, ch ₂ ch ₂ occh ₂ -Q, SNgSngObsn ^ h of O IS IPI acyl-OSSOSSN ^ CH3, where m = 0-16).