DE1961934A1 - Wood preservatives - Google Patents

Description

Patent attorney

Wl / Karl A. B »iygn% iien-.Pttllach, 10 De 25 ember 1969

O 2867 / GES Jipi'g

Oasis 2867 / GES

O 8023 t. \ N 'ei - Fuüach

^; A'ier.erilr.2, Ti-1J.: I.753Ci70, /> Jl iü2

COAL INDUSTRY (PATMIS) LIMITED, Hobart House, Grosvenor Place, London S «W» 1 «England

Wood preservatives

The invention "relates to a wood preservative, in particular, however not exclusively a wood preservative with water-repellent and anti-fouling properties «

A well-known wood preservative of this type consists of a preservative, ζ · Β · Pentachlorophenol, a paraffin wax and a resin, whereby these substances are in an organic solvent, such as solution3benzene (solvent naphtha) or white oil (* highly refined Mineral oil, liquid petrolatum) are dissolved. However, this known wood preservative has some disadvantages by, for example, the paraffin wax occasionally precipitating out of solution and the adhesion of one to the wood applied paint is often only relatively small #

These parts of the known waxy agents are overcome by the wood preservative according to the invention, which nevertheless has excellent water-repellent properties »

In the case of a wood preservative, which contains a wood preservative and a resin each dissolved in an organic solvent, the invention consists in the fact that this solution also contains a neutral polymer.

The solution preferably contains 0.5 to 5 sew .-% neutral polymer made of styrene-butadiene, polystyrene, polyisobutylene or polybutadiene *

The solution preferably contains 1 to 5 percent of a wood preservative3 from pentachlorophenol, zinc naphthenate, Eup ~> fernaphthenate or tributylzine oxide »

009829/1383

The resin content of the solution is preferably 2 to 15. The resin can be a synthetic petroleum resin Cs * B * that under the Trademark "Eseorez" known resin) can be used «

The solution contains 75 to 96 _t 5% by weight of a white oil made from sol * denaphtha or a mixture of both organic solvents.

Two exemplary embodiments for the production of the wood preservative according to the invention are described below:

example 1

To produce a solution of 80 % solvent naphtha, 5% pentachlorophenol, 10 % Escorez-.Har "and 5% styrene-butadiene, the solid constituents were dissolved in the solvent naphtha ^{with heating at 60 0 O and stretchers"}

Tartar spruce wood was treated with this solution in accordance with the test standard (U _# , S «-i ¹ ederal Specification TI-W-572), whereupon a base color was applied and its adhesive strength was determined in accordance with the aforementioned test standard«

Example 2

In Example 1, a solution of 80 % solvent naphtha, 5 % pentachlorophenol, 10 % Escorez resin and 5 % polystyrene was prepared. The polystyrene was a cast polystyrene of medium molecular weight a. The resulting solution was tested in the same way as in the case of example 1 «

In both examples the components of the solution are ί ,, Ώ. % specified «,

In the following, the determined ligesLsshsit ^ n äm & with the Lösim ^ sa gssiäS of Examples 1 and 2 bsdasadelteii wood with the Mgeasa} iaft®D. d®s H ^ let _s which with a commercially available,

0 09823/1383

Solution containing paraffin wax has been treated,

Solution Solution known permissible n * Belsp «1 n * Belsp * 2 waxy value

solution

Water inlet index 81? B 78 over 70

Swelling »·

Index 54 49 49 over 40.

Crystallization · »

point (° 0) 15 - 15 +23

Adhesion rewarded very good bad -

From this you can see that by finding a holistic means, old good water-repellent marks and good ones Ink adhesion is created, which also has a low KrI * installation point and thus good temperature resistance having*

00 9 829/1383

Claims (9)

1 «wood preservative _{t consisting of a wood preservative and resin f} each dissolved in an organic solvent, characterized in that the solution also contains a neutral polymer. dft by Cf ^ lt * ί ^ Ώτι.7ί * ί_ f * hn f * t 2. Wood preservative according to AnspWIöfi T, / ääB ^ iäS neuXTale polymer _{is contained in the solution in an amount of 0 t} 5 to 5% by weight 3 · Wood preservatives according to claims 1 and 2, characterized in that the neutral polymer consists of styrene-butadlen ₉ polystyrene, polyisobutylene or polybutadiene. 4 »Wood preservative according to claims 1 to 3, characterized in that the preservative is contained in the solution in an amount of 1 to 3% by weight« 5 · Wood preservative according to claims 1 to 4, characterized in that the preservative consists of pentachlorophenol, Tin naphthenate, copper naphthenate or tributylsine oxide consists" 6 · Wood preservatives according to claims 1 to 5 »characterized in that that the resin in an amount of 2 to 15% by weight is included in the solution * 7 · Wood preservative according to claims 1 to 6, characterized in that that the resin consists of a synthetic resin made from petroleum 8 «Wood preservative according to claims 1 to 7», characterized in that the organic solvent is contained in the solution in an amount of 75 to 96 _f 5% by weight # 9. Wood preservative according to claims 1 to S _9, characterized in that the organic solvent consists of Sdbrentnaphtha, white oil or a mixture of Solvenlnaphtha and white oil « 009829/1383