Polycarbodiimide composition, method for producing a polycarbodiimide composition, water-dispersed composition, solution composition, resin composition, and cured resin
AssigneeMitsui Chemicals, Inc.
InventorsTatsuya Yamashita, Toshihiko Nakagawa, Shinji Kiyono, Kazuki Sakata, Hirokazu Morita, Shigeru Mio, Satoshi Yamasaki
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Abstract
The polycarbodiimide composition is a reaction product of polyisocyanate having a primary isocyanate group with alcohol, wherein the alcohol contains at least one oxyethylene-containing alcohol containing an oxyethylene group, and at least one oxyethylene-noncontaining alcohol containing no oxyethylene group, the at least one oxyethylene-noncontaining alcohol has a solubility parameter of 11.20 (cal/cm3)1/2 or less.
Claims10
A polycarbodiimide composition of
- a reaction product of polyisocyanate having a primary isocyanate group with alcohol,
- wherein the alcohol contains
- at least one oxyethylene-containing alcohol containing an oxyethylene group, and
- at least one oxyethylene-noncontaining alcohol containing no oxyethylene group,
- the at least one oxyethylene-noncontaining alcohol has a solubility parameter of 11.20 (cal/cm3)1/2 or less, and
- the oxyethylene-noncontaining alcohol having the solubility parameter of 11.20 (cal/cm3)1/2 or less is
- at least one selected from the group consisting of isobutanol, 2-butanol, 2-methyl-1-butanol, 2,2-dimethyl-1-propanol, 3-methoxy-1-butanol, 1-octanol, 2-ethyl-1-hexanol, and 1-dodecanol.
A method for producing a polycarbodiimide composition, the method including the steps of:
- a urethane-forming step, in which polyisocyanate having a primary isocyanate group and alcohol are subjected to urethane-forming reaction, and
- a carbodiimide-forming step, in which the reaction product in the urethane-forming step is heated in the presence of a carbodiimide-forming catalyst to cause carbodiimide-forming reaction,
- wherein
- the alcohol contains
- at least one oxyethylene-containing alcohol containing an oxyethylene group, and
- at least one oxyethylene-noncontaining alcohol containing no oxyethylene group,
- the at least one oxyethylene-noncontaining alcohol has a solubility parameter of 11.20 (cal/cm3)1/2 or less, and
- the oxyethylene-noncontaining alcohol having the solubility parameter of 11.20 (cal/cm3)1/2 or less is
- at least one selected from the group consisting of isobutanol, 2-butanol, 2-methyl-1-butanol, 2,2-dimethyl-1-propanol, 3-methoxy-1-butanol, 1-octanol, 2-ethyl-1-hexanol, and 1-dodecanol.
Dependencies are inferred from the claim text.