| abstract |
A carrier consisting of ethylene glycol, or another hygroscopic glycol, or another hygroscopic liquid in a composition containing a protective agent to be introduced into a porous substrate such as timber, particularly a boron-rich compound (at least 25% of B 2 0 3 , preferably at least 35% of B 2 0 3 ). For penetration into wood as a preservative suppressing or preventing insecticidal or fungal attack, the glycol carrier penetrating the outer portion of the wood more quickly than an aqueous carrier. |