Compositions from the chemical recycling of plastic-derived streams and uses thereof

A recycle content pyrolysis gas (r-pyrolysis gas) composition, wherein said r-pyrolysis gas composition comprises:

• at least 20 and not more than 75 weight percent of ethylene and/or propylene;
• at least 5 and not more than 50 weight percent of ethane and/or propane;
• at least 5 and not more than 60 weight percent of methane;
• an ethylene to ethane weight ratio or propylene to propane weight ratio of at least 1:1 and not more than 3:1;
• C4+ olefins in an amount of not more than 10 weight percent;
• C4 paraffins in an amount of not more than 5 weight percent;
• and
• at least one of the following properties (i) through (ix):
• (i) C4 hydrocarbons in an amount of not more than 20 weight percent;
• (ii) hydrogen in an amount of not more than 10 weight percent;
• (iii) C3+ diolefins in an amount of not more than 10 weight percent;
• (iv) halogens in an amount of not more than 1 ppm;
• (v) carbonyls in an amount of not more than 100 ppm;
• (vi) carbon dioxide in an amount of not more than 100 ppm;
• (vii) carbon monoxide in an amount of not more than 2500 ppm;
• (viii) arsine and/or phosphine in an amount of not more than 15 ppb;
• and
• (ix) sulfur-containing compounds in an amount of not more than 100 ppm,
• and
• wherein said r-pyrolysis gas is formed by the pyrolysis of recycle waste plastic or materials derived therefrom;
• wherein a portion of said r-pyrolysis gas is not hydrogenated that is sent to a cracking furnace;
• and wherein said composition comprises at least 0.5 and not more than about 35 weight percent of butadiene, based on the total weight of the composition.