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Comonomer compsns. of prodn. of imide-contg. polyamino acids

A technology of comonomers and copolymers, applied in the preparation of organic compounds, preparations for toiletry, preparation of cyanide reaction, etc., can solve problems that have not been successfully disclosed

Inactive Publication Date: 2005-08-24
福利亚有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] Thus, to date, no water-soluble or wettable mixed amide / imide polyamino acids such as copolymers of aspartate and succinimide or related imide-containing polyamino acids have been disclosed.

Method used

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  • Comonomer compsns. of prodn. of imide-contg. polyamino acids
  • Comonomer compsns. of prodn. of imide-contg. polyamino acids
  • Comonomer compsns. of prodn. of imide-contg. polyamino acids

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0102] Example 1. Preparation of a comonomer composition from a 1:1 equivalent solution of ammonium aspartate and monosodium aspartate, including air drying at 120°C.

[0103] In a 600 ml beaker, under magnetic stirring, an amount of 6.65 g of aspartic acid (0.05 mol, Mw 133, Sigma Chemical, L isomer) was slurried in 50 ml of water. Add equal amount of NH 4 OH (32ml of 1:10 diluted concentrated ammonium hydroxide, 30% solution, 15.9M), converts aspartic acid into aspartic acid monoammonium in the solution. 8.65 g (0.05 mol) of easily soluble monosodium aspartate (monohydrate, Sigma Chemical) was added thereto. The solution was dried overnight at 120°C in air to form a solid light yellow but transparent glass-like disc.

[0104] The beaker containing the discs was quickly cooled by being partially immersed and rotated in a methanol bath (temperature close to -30°C) to which dry ice had been added, resulting in clean separation of the discs and the glass. Then the discs were pulveri...

Embodiment 2

[0106] Example 2. Preparation of a comonomer composition from a 1:1 equivalent solution of ammonium aspartate and monosodium aspartate, including vacuum drying at 120°C.

[0107] Following the method of Example 1, the difference is that a vacuum oven (VWR Scientific, 1430 type) set at 120° C. is used to complete the drying step under a vacuum of 50-100 mm Hg.

[0108] The resulting comonomer composition of sodium aspartate and aspartic acid was obtained with a yield of 15.37g, which was very close to the theoretical value (15.3g). This difference was also due to residual water and ammonium ion. In this case, the comonomer product is colorless, transparent and glassy (see Figure 7 Infrared spectrum).

Embodiment 3

[0109] Example 3. The copolymer was prepared from a 1:1 equivalent solution of ammonium aspartate and monosodium aspartate by adding 0.5 equivalent of sodium hydroxide to the ammonium aspartate solution, followed by vacuum drying at 120°C Monomer composition.

[0110] In a 600 ml beaker, under magnetic stirring, an amount of 6.65 g of aspartic acid (0.05 mol, Mw 133, Sigma Chemical, L isomer) was slurried in 50 ml of water. Add equal amount of NH 4 OH (32ml of 1:10 diluted concentrated ammonium hydroxide, 30% solution, 15.9M), converts aspartic acid into aspartic acid monoammonium in the solution. 0.025 mol of sodium hydroxide was added thereto in the form of 2.5 ml of 10N sodium hydroxide. The solution was vacuum dried (50-100 mm Hg) at 120°C overnight to form a solid, transparent glass-like disc.

[0111] The disc was processed as described in Example 1 to produce a solid, glassy, ​​ground particulate comonomer composition.

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Abstract

Described are monomer compositions containing aspartic acid and other comonomers, such as monosodium aspartate, and methods for their production. The monomer compositions can be polymerized, particularly by thermal polymerization, to obtain useful and novel imide-containing polyamino acids, i.e., copolymers containing polymerized aspartate units and succinimide units. The invention is also directed to the resulting polymeric materials, their methods of production, and their uses. Uses of the imide-containing polyamino acids include, for example, dispersant in detergent and cleansers, water-treatment chemicals as anti-scalants and corrosion inhibitors, personal-care additives for softening and moisturizing, and many others.

Description

[0001] This application was filed on February 6, 2002 and is a divisional application of Chinese patent application 02807870.5 with the title of "Comonomer composition for producing diimide-containing polyamino acid". Technical field [0002] The present invention includes monomer compositions containing aspartic acid and other comonomers such as monosodium aspartate, and methods for their production. The monomer composition can be polymerized particularly by thermal polymerization to obtain useful and new diimide-containing polyamino acids, that is, containing polymerized aspartic acid or aspartate units and succinimide units的copolymer. Therefore, the present invention also relates to the resulting polymeric materials, their production methods, and their uses as described herein. The uses of diimide-containing polyamino acids include, for example, dispersants in detergents and cleaners, water treatment chemicals as scale inhibitors and corrosion inhibitors, personal care additives...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K8/72A61K8/00A61K8/88A61Q5/00A61Q5/02A61Q5/12A61Q19/00C07C227/40C07C229/24C08G69/10C08G73/10C09D179/08C09J179/08
CPCA61Q19/00A61K8/88C08G73/1092A61Q5/02C07C227/40A61Q5/12C07C229/24C08G73/10
Inventor 格雷厄姆·斯威夫特
Owner 福利亚有限公司
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