Modified polyalkylene oxide

Patent metadata

Field	Value
Publication number	US-9605107-B2
Application number	US-201314408083-A
Country	US
Kind code	B2
Filing date	Jul 5, 2013
Priority date	Jul 6, 2012
Publication date	Mar 28, 2017
Grant date	Mar 28, 2017

Abstract

The object of the present invention is to provide a modified polyalkylene oxide capable of yielding an aqueous solution excellent in transparency with high viscosity, even when combined with a cationic surfactant. The present invention provides a modified polyalkylene oxide obtained by reacting a polyalkylene oxide compound (A), a polyether monohydric alcohol (B), and a diisocyanate compound (C);
wherein W is a polyethylene oxide represented by formula (II)

HO—(CH 2 CH 2 O) n —H  (II)
wherein n is an integer of 130 to 680;
wherein (B) comprises a random copolymer of ethylene oxide and propylene oxide, the random copolymer having a hydroxy group at one terminal and a linear-chain C 15-24 alkyl group at the other terminal, and having a ratio (a/b) of 1 to 2 wherein a represents the number of moles of ethylene oxide added and b represents the number of moles of propylene oxide added; and wherein (C) is at least one member selected from the group consisting of compounds represented by formula (IV)

O═C═N—R 2 —N═C═O  (IV)
wherein R 2 represents methyldiphenylene, hexamethylene, methyldicyclohexylene, 3-methyl-3,5,5-trimethylcyclohexylene, dimethylphenylene, or tolylene.

First claim

The invention claimed is:

1. A modified polyalkylene oxide obtained by reacting (A) a polyalkylene oxide compound, (B) a polyether monohydric alcohol, and (C) a diisocyanate compound;
wherein the polyalkylene oxide compound (A) has a number average molecular weight of 6,000 to 30,000;
wherein the polyether monohydric alcohol (B) comprises a random copolymer of ethylene oxide and propylene oxide, the random copolymer having a hydroxy group at one terminal and a linear-chain C 15-24 alkyl group at the other terminal, and having a ratio (a/b) of 1 to 2 wherein a represents the number of moles of ethylene oxide added and b represents the number of moles of propylene oxide added; and
wherein the diisocyanate compound (C) is at least one member selected from the group consisting of compounds represented by formula (IV)
O═C═N—R 2 —N═C═O  (IV)

wherein R 2 represents methyldiphenylene, hexamethylene, methyldicyclohexylene, 3-methyl-3,5,5-trimethylcyclohexylene, dimethylphenylene, or tolylene.

2. The modified polyalkylene oxide according to claim 1 , wherein, with respect to the polyether monohydric alcohol (B), a is an integer of 5 to 10, and b is an integer of 5 to 8.

3. The modified polyalkylene oxide according to claim 1 , wherein the polyether monohydric alcohol (B) has a number average molecular weight of 800 to 3,000.

4. The modified polyalkylene oxide according to claim 1 , wherein the diisocyanate compound (C) is at least one member selected from the group consisting of dicyclohexylmethane-4,4′-diisocyanate, and 1,6-hexamethylene diisocyanate.

5. The modified polyalkylene oxide according to claim 1 , wherein the reaction is carried out using 1 to 2 moles of the polyether monohydric alcohol (B) per mole of the polyalkylene oxide compound (A).

6. A cosmetic composition comprising the modified polyalkylene oxide according to claim 1 .

7. The cosmetic composition according to claim 6 , further comprising a cationic surfactant.

8. A molded article prepared by using the modified polyalkylene oxide according to claim 1 .

9. The molded article according to claim 8 , which is in the form of a sheet or a film.

Assignees

• Sumitomo Seika Chemicals

Inventors

• Ozawa Hitoshi
• Masuda Tsuyoshi
• Nishikawa Yusuke

Classifications

• C08G18/4833 Primary

  Polyethers containing oxyethylene units · CPC title

• A61K2800/48

  Thickener, Thickening system · CPC title

• C08G18/7621

  being toluene diisocyanate including isomer mixtures · CPC title

• C08G18/7685

  containing two or more non-condensed aromatic rings directly linked to each other · CPC title

• C08G18/753

  containing one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group having a primary carbon atom next to the isocyanate or isothiocyanate group · CPC title