I’m obliged to prevent daughter producing old coat (6)
I believe the answer is:
tabard
'old coat' is the definition.
'i'm obliged to prevent daughter' is the wordplay.
I cannot quite see how this works, but
'prevent' could be 'bar' (I've seen this in other clues) and 'bar' is located in the answer.
'daughter' could be 'd' and 'd' is found in the answer.
The remaining letters 'ta' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
'producing' acts as a link.
Can you help me to learn more?
(Other definitions for tabard that I've seen before include "Coat worn by herald" , "Herald's jacket" , "Gilet" , "[A] top" , "Knight's outer tunic" .)