WILMINGTON, Delaware ( TheStreet) -- DuPont's ( DD) fourth-quarter earnings topped estimates and the chemicals maker raised its forecast for 2011. DuPont earned $376 million, or 40 cents a share, in the quarter, down from year-earlier earnings of $441 million, or 48 cents a share. Excluding items, earnings in the latest quarter were 50 cents a share. Analysts surveyed by Thomson Reuters expected DuPont to earn 32 cents a share in the fourth quarter. DuPont said revenue in the quarter rose 15% to $7.4 billion. Analysts expected sales of $6.95 billion. DuPont said Tuesday it expects earnings in 2011 of $3.45 to $3.75 a share, up from its previous outlook of $3.30 to $3.60 a share. The company said the impact of the planned Danisco acquisition could cut 2011 earnings by 30 cents to 45 cents a share on a reported basis. -- Written by Joseph Woelfel >To contact the writer of this article, click here: Joseph Woelfel >To submit a news tip, send an email to: firstname.lastname@example.org.