If you export the translations for the "product" module ("Products and Price Lists") you should get a file named something like en_GB.csv which contains two records for each product (one for Product.Template, one for Product.Product)
name =
product.template,name
res_id contains the ID for the product (product.product_product_25_product_template)
src is the original name
value is the translation
This is an extract from the .po file:
#. module: product
#: model:product.product,name:product.product_product_25
#: model:product.template,name:product.product_product_25_product_template
msgid "Acoustic Bloc Screens"
msgstr "Acoustic Blocking Screens"