Can you collect unemployment in PA, if you quit your job b/c you are being treated badly?

I've worked for a small company for the last 2 1/2 years, and it was seriously the best place ever, until the owners son decided to start grabbing my chest, well when i brought it to the attention of HR, who then discussed it with the owner, I was demoted, along with belittled and called a lair. The case was never settled, although his son did apologize, it was swept under the carpet, and the paperwork was taken from his son's files and shredded. Now for the last three months since the incident I have been treated like garbage, i was demoted from my positions and now he finds even the littlest reason to either write me up, or leave me paragraph sized letters on my desk stating that i am no doing my job correctly (mind you that the entire 2 1/2 years i was here before this i was referred to as his right hand man, he has always entrusted me with a variety of confidential paperwork) So what i need to know is if i quit because of the harassment and discrimination <-(I turned his son in and refused to date him) would i be eligible for unemployment. I have spoken to him when this first happened and he told me he was not punishing me for making a report but all of his actions speak differently, and i know that there is no way to change the way he treats me. Any advice??