Psychology of brand names
What you are looking for is usually considered within synesthesia, specifically auditory-visual synesthesia.

Usually these topics are developed in "commercial or industrial psychology" in a general way and more specifically by psychologists incorporated in marketing, these last studies are often not published, are made for the best initial orientation of the product with a line of consumers.

Here is a general book:
https://books.google.es/books?id=ESH7AAAAQBAJ&amp;pg=PA812&amp;lpg=PA812&amp;dq=psychology+synesthesia&amp;source=bl&amp;ots=zC3KmJPT2h&amp;sig=pGlZ9qPf1d14T7i96AL8OmMvVSo&amp;hl=es&amp;sa=X&amp;ved=0ahUKEwjmnYvRyanVAhUNfFAKHbX-CV84ChDoAQhWMAY#v=onepage&amp;q&amp;f=false

It seems that what ultimately interests most is why (cerebrally) and what repercussions (especially in clinical) has this phenomenon.

You will not find it difficult to find end-of-grade papers, there are also theses.