Claims
- 1. A process for preparing a water resistant film or coating from a water soluble or dispersible grafted protein comprising
- A) polymerizing by a free radical mechanism a mixture consisting essentially of (a) a monoethylenically unsaturated monomer and (b) a protein in a weight ratio of (a):(b) of (from 0.5 to 90):(from 99.5 to 10) to form a grafted protein,
- B) forming a film or coating from the grafted protein, and
- C) treating the film or coating with at least one compound selected from the group consisting of acids, di- or tri-valent salts, glyoxal or glutaraldehyde.
- 2. A process as claimed in claim 1, wherein the coating is prepared on paper or a fibrous mat.
- 3. A method of packaging a material, comprising packaging the material with a compostible packaging film or coating prepared by
- A) polymerizing by a free radical mechanism a mixture consisting essentially of (a) a monoethylenically unsaturated monomer and (b) a protein in a weight ratio of (a):(b) of (from 0.5 to 90):(from 99.5 to 10) to form a grafted protein,
- B) forming a film or coating from the grafted protein, and
- C) treating the film or coating with at least one compound selected from the group consisting of acids, di- or tri-valent salts, glyoxal or glutaraldehyde.
- 4. A diaper containing as outer layer a film or coating prepared by
- A) polymerizing by a free radical mechanism a mixture consisting essentially of (a) a monoethylenically unsaturated monomer and (b) a protein in a weight ratio of (a):(b) of (from 0.5 to 90):(from 99.5 to 10) to form a grafted protein,
- B) forming a film or coating from the grafted protein, and
- C) treating the film or coating with at least one compound selected from the group consisting of acids, di- or tri-valent salts, glyoxal or glutaraldehyde.
Priority Claims (1)
Number |
Date |
Country |
Kind |
4108170 |
Mar 1991 |
DEX |
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Parent Case Info
This application is a continuation of application Ser. No. 07/842,992, filed on Feb. 28, 1992, now abandoned.
US Referenced Citations (3)
Number |
Name |
Date |
Kind |
2956884 |
Caldwell |
Oct 1960 |
|
3651210 |
Shepler et al. |
Mar 1972 |
|
4812550 |
Erickson et al. |
Mar 1989 |
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Foreign Referenced Citations (2)
Number |
Date |
Country |
545084 |
Aug 1957 |
CAX |
644570 |
Jul 1962 |
CAX |
Continuations (1)
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Number |
Date |
Country |
Parent |
842992 |
Feb 1992 |
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