It was reported to us that SDD presentations from Impress can be converted to Word documents with PrimoOnline conversion service. Other than that you could simply copy and paste the text from such presentations to Word and save as DOC document.
Convert OpenOffice.org presentation to Microsoft Word document (prior version 2007).
We have found one software suitable in our database for this conversion.
Apple macOS / Mac OS X software - convert sdd to doc on OS X
A full-featured set of office applications for Mac OS X
Convert from sdd file format
The table with program actions contains information about what each program is capable of doing with their files. This may be a good pointer for further searches for certain file conversions and help you find the converter you are looking for if our search result is insufficient for you. However, it is far from perfect and may sometimes show results which are not really usable because of the nature of the software handles the files. So a conversion that appears as possible, just because of matched actions, may in fact not be possible.