Composition, production method for composition, and production method for unsaturated compound
AssigneeShowa Denko K.K.
InventorsNorihito Nishimura, Katsutoshi Ohno
Life of this patent
Estimating the term…
Abstract
A composition is provided including a compound (A) represented by Formula (1) and a compound (B) represented by Formula (2), wherein the compound (B) is contained in an amount of 0.00002 to 0.2 parts by mass with respect to 100 parts by mass of the compound (A): (R1—COO)n—R2—(NCO)m . . . (1) (in Formula (1), R1 is an ethylenically unsaturated group having 2 to 7 carbon atoms; R2 is an (m+n)-valent hydrocarbon group having 1 to 7 carbon atoms; and n and m are each an integer of 1 or 2) (in Formula (2), R is (—R2—(OCO—R1), and R1 and R2 are the same as those in Formula (1)).
Claims15
A composition, comprising:
- a compound (A) represented by Formula (1);
- and
- a compound (B) represented by Formula (2),
- wherein the compound (B) is contained in an amount of 0.00002 to 0.2 parts by mass with respect to 100 parts by mass of the compound (A), and
- a pH of the composition is 1 to 7,
- (R1—COO)n—R2—(NCO)m (1)
- (in Formula (1), R1 is an ethylenically unsaturated group having 2 to 7 carbon atoms;
- R2 is an (m+n)-valent hydrocarbon group having 1 to 7 carbon atoms and optionally contains an ether group;
- and n and m are each an integer of 1 or 2)
- (in Formula (2), R is (—R2—(OCO—R1), and R1 and R2 are the same as those in Formula (1)).
A method for producing a composition, comprising:
- a step of producing a mixture that includes a compound (A) represented by Formula (1) and a compound (B) represented by Formula (2), wherein the compound (B) is contained in an amount of higher than 0.2 parts by mass with respect to 100 parts by mass of the compound (A);
- and
- a purification step, wherein the mixture is subjected to purification by distillation at a reflux ratio of 2.0 to 4.0, a pressure of 1.0 to 10.0 kPa, and a distillation temperature of 90° C. to 140° C., to obtain a purified product, and a pH of the purified product is adjusted to 1 to 7,
- (R1—COO)n—R2—(NCO)m (1)
- (in Formula (1), R1 is an ethylenically unsaturated group having 2 to 7 carbon atoms;
- R2 is an (m+n)-valent hydrocarbon group having 1 to 7 carbon atoms and optionally contains an ether group;
- and n and m are each an integer of 1 or 2)
- (in Formula (2), R is (—R2—(OCO—R1), and R1 and R2 are the same as those in Formula (1)).
A method for producing an unsaturated compound, comprising:
- a step of mixing a composition, which comprises
- a compound (A) represented by Formula (1) and
- a compound (B) represented by Formula (2),
- wherein the compound (B) is contained in an amount of 0.00002 to 0.2 parts by mass with respect to 100 parts by mass of the compound (A),
- with a compound having active hydrogen to react the compound (A) contained in the composition with the compound having active hydrogen, thereby obtaining a reaction product,
- (R1—COO)n—R2—(NCO)m (1)
- (in Formula (1), R1 is an ethylenically unsaturated group having 2 to 7 carbon atoms;
- R2 is an (m+n)-valent hydrocarbon group having 1 to 7 carbon atoms and may contain an ether group;
- and n and m are each an integer of 1 or 2)
- (in Formula (2), R is (—R2—(OCO—R1), and R1 and R2 are the same as those in Formula (1))
- wherein the reaction product is any one selected from the group consisting of 2-butanone oxime-O-(carbamoylethyl-2-methacrylate), 2-[(3,5-dimethylpyrazolyl)carbonylamino]ethyl methacrylate, 2-butanone oxime-O-(carbamoylethyl-2-acrylate), and 2-[(3,5-dimethylpyrazolyl)carbonylamino]ethyl acrylate.
Dependencies are inferred from the claim text.