Chris Rock's estranged wife is demanding a ''huge'' chunk of his fortune in their divorce.

The 'Top Five' actor split from Malaak Compton-Rock last December and documents in their divorce case show the 46 year old is seeking a large proportion of the 50-year-old comic's estimated $70 million earnings to maintain her lifestyle.

The court filings say Malaak deserves a payout ''commensurate with the marital standard of living'' because she spends most of her time caring for their daughters, Lola, 13, and 11-year-old Zahra, and doing charity work.

The former couple - who were married for 19 years before going their separate ways - did have a pre-nuptial agreement but both Chris and Malaak have agreed the terms expired under a sunset clause, a filing made in Bergen County court and obtained by the New York Post newspaper shows.

Despite it previously being claimed that Malaak was seeking sole custody of the couple's daughters, the documents state she and Chris have agreed to share care of the girls equally.

Chris recently admitted he was worried about the impact the divorce would have on his kids if he wasn't around all the time.

He said: ''Can I keep it going and raise healthy daughters who don't have daddy issues because I'm gone all the time?

''So who the hell knows what's next.

''I'm doing OK. You know, some days are better than others, some days you're sad outta your f***ing mind. But my daughters are good and I'm only an hour away. Two houses close by. It's good.''