Root growth inhibitors for building materials comprising monohyd

Details Root growth inhibitors for building materials comprising monohyd Root growth inhibitors for building materials comprising monohyd

1996-02-28

1997-09-30

Clardy, S. Mark

Plant protecting and regulating compositions

Plant growth regulating compositions

Organic active compound containing

71DIG1, 527413, 428540, 428541, 428907, 428911, A01N 3902

Patent

active

056725680

DESCRIPTION:

BRIEF SUMMARY
This application has been filed under 35 USC 371 as a national Stage application of PCT/EP94/02768, filed Aug. 19, 1994.
The present invention relates to the use of 2-methyl-4-chlorophenoxypropionic ester for preventing roots from growing into and through buildings, building materials and insulating compounds, and to root-resistant bitumen mixtures, jointing compounds and insulations.
In building materials, root penetration results in undesirable damage to the material. Plant roots can destroy, in particular, plastic materials, such as sealing compounds, sheeting for roofs, but also asphalt. The penetration of roots into seals of channels and drain channels, coverings of flat roofs, in bitumen insulation of pipelines, bridge buildings and hydraulic structures, and the growth of roots into and through light bitumen roads are generally known problems. Leakages, corrosion and damage to buildings, roads and pipelines may result.
The addition of anti-root active compounds to building materials is known and described, for example, in F. Hegemann, Abiogene Bitumenadditive, (1973).
It is furthermore known that herbicides such as, for example, 2,4-dichlorophenoxyacetic acid, 2,4,5-trichlorophenoxyacetic acid and .alpha.-naphthylacetic acid, or their salts, amides or esters, for example isooctyl ester or 1-hydroxy-2-butoxyethane ester, and furthermore phenyl-N-isopropylcarbaminate and p-chlorophenyldimethylurea can be used as root penetration inhibitors (DE 1 108 833).
There are also described mixtures of condensation products of monochloroacetic acid with various o-chlorophenols or o-chlorocresols, which are said to feature these characteristics (see DE 1 109 294).
Finally, it is known that esters of glycols or higher polyols with MCPP acid (2-methyl-4-chlorophenoxypropionic acid) have a root-inhibitory action (DE 1 196 115). However, the same application shows that the activity of esters of MCPP acid with monoalcohols is considerably lower than the activity of such esters with polyglycols.
Surprisingly, it has now been found that, in contrast to the teaching of DE 1 196 115, it is precisely those esters of MCPP acid which are prepared from the monoalcohols of the general formula (I) -pentyl, .sup.n -hexyl, .sup.n -heptyl, .sup.n -octyl, 2-ethylhexyl, .sup.n -nonyl, .sup.n -decyl, .sup.n -undecyl, .sup.n -dodecyl, .sup.n -tetradecyl, .sup.n -tridecyl, .sup.n -pentadecyl, .sup.n -octadecyl, .sup.n nonadecyl, .sup.n -eicosyl or their branched structural isomers, or R is interrupted by one or more oxygen atoms, such as, for example, --CH.sub.2 --CH.sub.2 --OR.sup.1, ##STR2## i.e. monoether alcohols of ethylene glycol, such as, preferably, 2-(n-butoxy)ethyl or propylene glycol, the latter with its structural isomers, repeated not more than 10 times,
In the case of the branched structural isomers, those alkyl radicals which can be prepared by means of a Grubert reaction, such as, for example, 2-hexyldecanol (Isofol 16), 2-butyloctanol (Isofol 12), 2-decyltetradecanol (Isofol 24), 2-octyldodecanol (Isofol 20) and other Isofols (by Condea, Brunsbuttel) from 10 to 30, or mixtures of these, are particularly preferred.
Preferred amongst these esters are those of the alcohols of the formula (I) ##STR3## where R.sup.1 represents H, Me, Et, Pr, Bu, pentyl, hexyl, heptyl, octyl,
All MCPP acid ester isomers and racemic and optically active MCPP acid esters are used according to the invention. The esters can be used singly or in combination with each other. For the purpose of root-resistant treatment, the esters are mixed the building materials or insulating compounds directly in the form of solution or other preparations such as, for example, with bitumen, various types of tar pitch. Exemplary and preferred jointing compounds are described, for example, in WO 92/10537.
The customary use concentration of the MCPP acid esters are 0.2 to 5% by weight based on bitumen.
The esters can be prepared by known methods (see, for example, Organikum Wissenschaften 1990, pp. 373, 388, 405, 408, 389, 402, 403, 173, 199, 388, 404) and can genera

REFERENCES:
patent: 3231398 (1966-01-01), Pauli et al.
patent: 5116414 (1992-05-01), Burton et al.

Affiliated with

Also associated with

Rating

Root growth inhibitors for building materials comprising monohyd does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Root growth inhibitors for building materials comprising monohyd, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Root growth inhibitors for building materials comprising monohyd will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2256528