Composition, stretched body and method of manufacturing thereof

A composition having a stress relaxation time of 50 seconds or more,

• the composition comprising a polytetrafluoroethylene and at least one of a compound represented by the following general formula (5) in an amount up to 150 ppb based on the polytetrafluoroethylene and a compound represented by the following general formula (5′) in an amount up to 150 ppb based on the polytetrafluoroethylene,
• and substantially free from a compound represented by the following general formula (3):
• (H—(CF2)8—SO3)qM2 General Formula (3):
• wherein M2 is H, a metal atom, NR54, where each R5 may be the same or different and is H or an organic group having 1 to 10 carbon atoms, imidazolium optionally having a substituent, pyridinium optionally having a substituent, or phosphonium optionally having a substituent;
• and q is 1 or 2,
• (H—(CF2)13—COO)pM1 General Formula (5):
• wherein M1 is H, a metal atom, NR54, where each R5 may be the same or different and is H or an organic group having 1 to 10 carbon atoms, imidazolium optionally having a substituent, pyridinium optionally having a substituent, or phosphonium optionally having a substituent;
• and p is 1 or 2, and
• (H—(CF2)14—COO)pM1 General Formula (5′):
• wherein M1 is H, a metal atom, NR54, where each R5 may be the same or different and is H or an organic group having 1 to 10 carbon atoms, imidazolium optionally having a substituent, pyridinium optionally having a substituent, or phosphonium optionally having a substituent;
• and p is 1 or 2.

A composition having a standard specific gravity of 2.175 or less,

• the composition comprising a polytetrafluoroethylene and at least one of a compound represented by the following general formula (5) in an amount up to 150 ppb based on the polytetrafluoroethylene and a compound represented by the following general formula (5′) in an amount up to 150 ppb based on the polytetrafluoroethylene,
• and substantially free from a compound represented by the following general formula (3):
• (H—(CF2)8—SO3)qM2 General Formula (3):
• wherein M2 is H, a metal atom, NR54, where each R5 may be the same or different and is H or an organic group having 1 to 10 carbon atoms, imidazolium optionally having a substituent, pyridinium optionally having a substituent, or phosphonium optionally having a substituent;
• and q is 1 or 2,
• (H—(CF2)13—COO)pM1 General Formula (5):
• wherein M1 is H, a metal atom, NR54, where each R5 may be the same or different and is H or an organic group having 1 to 10 carbon atoms, imidazolium optionally having a substituent, pyridinium optionally having a substituent, or phosphonium optionally having a substituent;
• and p is 1 or 2, and
• (H—(CF2)14—COO)pM1 General Formula (5′):
• wherein M1 is H, a metal atom, NR54, where each R5 may be the same or different and is H or an organic group having 1 to 10 carbon atoms, imidazolium optionally having a substituent, pyridinium optionally having a substituent, or phosphonium optionally having a substituent;
• and p is 1 or 2.

A stretched body having a breaking strength of 10.0 N or more,

• the stretched body comprising a polytetrafluoroethylene and at least one of a compound represented by the following general formula (5) in an amount up to 150 ppb based on the polytetrafluoroethylene and a compound represented by the following general formula (5′) in an amount up to 150 ppb based on the polytetrafluoroethylene,
• and substantially free from a compound represented by the following general formula (3):
• (H—(CF2)8—SO3)qM2 General Formula (3):
• wherein M2 is H, a metal atom, NR54, where each R5 may be the same or different and is H or an organic group having 1 to 10 carbon atoms, imidazolium optionally having a substituent, pyridinium optionally having a substituent, or phosphonium optionally having a substituent;
• and q is 1 or 2,
• (H—(CF2)13—COO)pM1 General Formula (5):
• wherein M1 is H, a metal atom, NR54, where each R5 may be the same or different and is H or an organic group having 1 to 10 carbon atoms, imidazolium optionally having a substituent, pyridinium optionally having a substituent, or phosphonium optionally having a substituent;
• and p is 1 or 2, and
• (H—(CF2)14—COO)pM1 General Formula (5′):
• wherein M1 is H, a metal atom, NR54, where each R5 may be the same or different and is H or an organic group having 1 to 10 carbon atoms, imidazolium optionally having a substituent, pyridinium optionally having a substituent, or phosphonium optionally having a substituent;
• and p is 1 or 2.

A stretched body having a stress relaxation time of 50 seconds or more,

• the stretched body comprising a polytetrafluoroethylene and at least one of a compound represented by the following general formula (5) in an amount up to 150 ppb based on the polytetrafluoroethylene and a compound represented by the following general formula (5′) in an amount up to 150 ppb based on the polytetrafluoroethylene,
• and substantially free from a compound represented by the following general formula (3):
• (H—(CF2)8—SO3)qM2 General Formula (3):
• wherein M2 is H, a metal atom, NR54, where each R5 may be the same or different and is H or an organic group having 1 to 10 carbon atoms, imidazolium optionally having a substituent, pyridinium optionally having a substituent, or phosphonium optionally having a substituent;
• and q is 1 or 2,
• (H—(CF2)13—COO)pM1 General Formula (5):
• wherein M1 is H, a metal atom, NR54, where each R5 may be the same or different and is H or an organic group having 1 to 10 carbon atoms, imidazolium optionally having a substituent, pyridinium optionally having a substituent, or phosphonium optionally having a substituent;
• and p is 1 or 2, and
• (H—(CF2)14—COO)pM1 General Formula (5′):
• wherein M1 is H, a metal atom, NR54, where each R5 may be the same or different and is H or an organic group having 1 to 10 carbon atoms, imidazolium optionally having a substituent, pyridinium optionally having a substituent, or phosphonium optionally having a substituent;
• and p is 1 or 2.