Polyurethane urea composition and preparation method thereof

Patent metadata

Field	Value
Publication number	US-10731034-B2
Application number	US-201815936473-A
Country	US
Kind code	B2
Filing date	Mar 27, 2018
Priority date	Dec 20, 2017
Publication date	Aug 4, 2020
Grant date	Aug 4, 2020

Abstract

A polyurethane urea composition and a preparation method thereof are provided. The method includes mixing and reacting an urea and an amine compound to obtain a polyurea oligomer, and mixing and reacting the polyurea oligomer and a cyclic carbonate compound to obtain a polyurethane urea composition having a repeating unit represented by formula I:

—R 2 —U 2 —U 1 —U 2 —R 2 —, wherein   [formula I]
U 1 is

a is an integer of 1 to 10000,
each U 2 is independently

each R 1 is independently a C1 to C20 alkylene group, a C3 to C20 cycloalkylene group, a C8 to C20 alkylarylene group, a polyether group having a weight-average molecular weight of 100 g/mol to 10000 g/mol, or a combination thereof, and
each R 2 is independently an aliphatic group, a cycloaliphatic group, an aromatic group substituted by an alkyl or an unsubstituted aromatic group, an oligo polyether group, an oligo polyester group, or a combination thereof.

First claim

What is claimed is:

1. A polyurethane urea composition obtained by reacting a polyurea oligomer and a cyclic carbonate compound, and a molar ratio of the polyurea oligomer and the cyclic carbonate compound is 1:10 to 10:1 comprising a repeating unit represented by formula I:
—R 2 —U 2 —U 1 —U 2 —R 2 —, wherein   [formula I]

U 1 is

wherein a is an integer of 1 to 10000,
each U 2 is independently

each R 1 is independently a C1 to C20 alkylene group, a C3 to C20 cycloalkylene group, a C8 to C20 alkylarylene group, a polyether group having a weight-average molecular weight of 100 g/mol to 10000 g/mol, or a combination thereof, and
each R 2 is independently an aliphatic group, a cycloaliphatic group, an aromatic group substituted by an alkyl group or an unsubstituted aromatic group, an oligo polyether group, an oligo polyester group, or a combination thereof, wherein the polyurea oligomer comprises a compound represented by formula 1:
H 2 N—U 1 —NH 2 .   [formula 1]

2. The polyurethane urea composition of claim 1 , wherein the cyclic carbonate compound comprises a compound represented by formula 2:

wherein b is 1 to 6.

3. A polyurethane urea composition obtained by reacting an epoxy compound, a polyurea oligomer, and a cyclic carbonate compound, and a molar ratio of the epoxy compound and the cyclic carbonate compound is 10:1 to 1:1 comprising a repeating unit represented by formula I and at least one of the repeating units represented by formula II and formula III:
—R 2 —U 2 —U 1 —U 2 —R 2 —, wherein   [formula I]

U 1 is

wherein a is an integer of 1 to 10000,
each U 2 is independently

each R 1 is independently a C1 to C20 alkylene group, a C3 to C20 cycloaklene group, a C8 to C20 alkylarylene group, a polyether group having a weight-average molecular weight of 100 g/mol to 10000 g/mol, or a combination thereof, and
each R 2 is independently an aliphatic group, a cycloaliphatic group, an aromatic group substituted by an alkyl group or an unsubstituted aromatic group, an oligo polyether group, an oligo polyester group, or a combination thereof,

wherein
E is

each R 3 is independently an aliphatic group, a cycloaliphatic group, an aromatic group substituted by an alkyl group or an unsubstituted aromatic group, an oligo polyether group, an oligo polyester group, or a combination thereof, wherein the epoxy compound comprises a compound represented by formula 3:

wherein c is 1 to 6.

Assignees

• Ind Tech Res Inst

Inventors

• Hsueh Mao-Lin
• Chen yi-zhen
• Yeh Hsiao-Chun
• Lin Yung-Chan
• Hsieh Cheng-Han

Classifications

• C08L75/02 Primary

  Polyureas · CPC title

• C08G71/02

  Polyureas · CPC title

• C08K5/1565

  Five-membered rings · CPC title

• C08K5/1515

  Three-membered rings · CPC title

• C08L75/12 Primary

  from compounds containing nitrogen and active hydrogen, the nitrogen atom not being part of an isocyanate group · CPC title