Composition and cured product thereof
AssigneeDaicel Corporation
InventorsTakashi Konno, Naritoshi Maetsu, Jun Watanabe, Shintarou Hatanaka
Life of this patent
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Abstract
Provided is a composition capable of forming a cured product excelling in adhesion to a substrate, hardness, scratch resistance, and chemical resistance. The composition of the present disclosure contains a polyol compound (A) and an isocyanate compound (B). The polyol compound (A) includes a compound (a1) represented by Formula (1) below, where R1 to R3 each are a group represented by Formula (1a), the compound (a1) having a number average molecular weight (calibrated with polystyrene standard) of 800 or greater. The isocyanate compound (B) includes a polyisocyanate compound having an isocyanurate skeleton.
Claims12
A composition comprising:
- a polyol compound (A);
- and
- an isocyanate compound (B),
- wherein the polyol compound (A) comprises a compound (a1) represented by Formula (1):
- wherein R1 to R3 are each, identically or differently, a group represented by Formula (1a):
- wherein L1 and L2 are each, identically or differently, an alkylene group having from 1 to 10 carbons, m is a number of 0 or greater, and the bond with the wavy line bonds to a nitrogen atom in Formula (1), provided that “m”s in the groups represented by Formula (1a) in R1, R2, and R3 are not simultaneously 0, and
- wherein the compound (a1) has a number average molecular weight, calibrated with polystyrene standard, of 800 or greater, and
- wherein the isocyanate compound (B) comprises a compound (b) represented by Formula (2):
- wherein L3, L4, and L5 are each, identically or differently, a hydrogen atom, an alkyl group having from 1 to 10 carbons and having an NCO group, or an alkyl group having from 1 to 10 carbons and having a group represented by Formula (2a):
- wherein L6 and L7 are each, identically or differently, an alkylene group having from 1 to 10 carbons, and the bond with the wavy line bonds to a carbon atom configuring the alkyl group, provided that L3, L4, and L5 are not simultaneously hydrogen atoms,
- wherein a hydroxyl value of the compound (a1) is from 140 to 210 (KOH mg/g), and
- wherein the polyol compound (A) further comprises a polyester polyol (a2) having a number average molecular weight, calibrated with polystyrene standard, from 200 to 600, and a hydroxyl value from 300 to 850 (KOH mg/g), and in an amount ranging from 0.5 to 1.5 parts by weight per 1 part by weight of the compound (a1).
A method for manufacturing a coating agent, the method including mixing a polyol compound (A);
- and
- an isocyanate compound (B),
- wherein the polyol compound (A) comprises a compound (a1) represented by Formula (1):
- wherein R1 to R3 are each, identically or differently, a group represented by Formula (1a):
- wherein L1 and L2 are each, identically or differently, an alkylene group having from 1 to 10 carbons, m is a number of 0 or greater, and the bond with the wavy line bonds to a nitrogen atom in Formula (1), provided that “m”s in the groups represented by Formula (1a) in R1, R2, and R3 are not simultaneously 0, and
- wherein the compound (a1) has a number average molecular weight, calibrated with polystyrene standard, of 800 or greater, and
- wherein the isocyanate compound (B) comprises a compound (b) represented by Formula (2):
- wherein L3, L4, and L5 are each, identically or differently, a hydrogen atom, an alkyl group having from 1 to 10 carbons and having an NCO group, or an alkyl group having from 1 to 10 carbons and having a group represented by Formula (2a):
- wherein L6 and L7 are each, identically or differently, an alkylene group having from 1 to 10 carbons, and the bond with the wavy line bonds to a carbon atom configuring the alkyl group, provided that L3, L4, and L5 are not simultaneously hydrogen atoms,
- wherein a hydroxyl value of the compound (a1) is from 140 to 210 (KOH mg/g), and
- wherein the polyol compound (A) further comprises a polyester polyol (a2) having a number average molecular weight, calibrated with polystyrene standard, from 200 to 600, and a hydroxyl value from 300 to 850 (KOH mg/g), and in an amount ranging from 0.5 to 1.5 parts by weight per 1 part by weight of the compound (a1).
Dependencies are inferred from the claim text.