Some well received news from raw materials company Yule Catto has proved a catalyst for good gains in the chemicals sector.Yule Catto's joint venture subsidiary, Revertex (Malaysia) has exchanged conditional contracts with HB Fuller Company for the sale of adhesives business Revertex Finewaters.Defensively-oriented stocks are out of favour. Scottish & Southern Energy leads the electricity sector lower, while Lambert & Butler maker Imperial has the tobacco sector in the red.Top performing sectors so far todayAutomobiles & Parts 2,952.98 +2.60%Industrial Metals & Mining 6,015.71 +1.55%Chemicals 5,113.50 +1.45%Real Estate Investment Trusts 1,902.50 +1.45%Financial Services 5,080.44 +1.40%Bottom performing sectors so far todayElectricity 6,602.46 -0.45%Tobacco 27,066.67 -0.32%Pharmaceuticals & Biotechnology 8,753.21 -0.29%Food & Drug Retailers 4,914.87 -0.19%Gas, Water & Multiutilities 4,226.22 -0.15%