GB778743A - Improvements in or relating to plasticized high acetyl cellulose acetate compositions - Google Patents
Improvements in or relating to plasticized high acetyl cellulose acetate compositionsInfo
- Publication number
- GB778743A GB778743A GB17931/55A GB1793155A GB778743A GB 778743 A GB778743 A GB 778743A GB 17931/55 A GB17931/55 A GB 17931/55A GB 1793155 A GB1793155 A GB 1793155A GB 778743 A GB778743 A GB 778743A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cellulose acetate
- plasticizer
- phthalate
- intrinsic viscosity
- isobutyl
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L1/00—Compositions of cellulose, modified cellulose or cellulose derivatives
- C08L1/08—Cellulose derivatives
- C08L1/10—Esters of organic acids, i.e. acylates
- C08L1/12—Cellulose acetate
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Plastic compositions comprising cellulose acetate of acetyl value (as combined acetic acid) at least 57 per cent and an intrinsic viscosity of at least 1.6, and a plasticizer of low solvent power for the cellulose acetate in intimate fusion therewith, are prepared by heating an intimate mixture of the cellulose acetate and the plasticizer in particulate form with mastication to a temperature sufficiently high to cause the mixture to fuse and form a homogeneous melt, which is then cooled to room temperature. The term /aintrinsic viscosity/e is defined. A plasticizer of low solvent power is defined as one which forms a homogeneous melt when heated with the cellulose acetate flake in the proportion 7/3 at 450 DEG F., but separates from the cellulose acetate on cooling the melt to room temperature. The plasticizer may be dibutyl, di-isobutyl or butyl benzyl phthalate, butyl phthalyl butyl glycolate, diethylene glycol dibenzoate, the adduct of equimolar proportions of ethylene oxide and nonyl phenol, or diethyl phthalate used with triphenyl phosphate in 1 : 1 ratio, di-isobutyl phthalate being preferred. The acetyl value of the cellulose acetate is preferably 58-60 and its intrinsic viscosity is preferably 1.7-1.9. The composition may contain a stabilizer, such as an epoxy-type compound obtained by condensation of an epihalohydrin with a polyhydric phenol or an organic polyglycidyl compound prepared by the polymerization or condensation of glycidol. In an example, 100 parts of cellulose acetate of acetyl value 58.4-59.6 and intrinsic viscosity 1.7 to 1.8 are mixed with 30 parts of di-isobutyl phthalate and 0.2 part of a polymeric condensation product of epichlorhydrin and bisphenol as stabilizer, dried at 160 DEG F., extrusion compounded at 430-600 DEG F., and reduced to moulding powder in known manner. Shaped articles moulded from compositions of the invention have improved toughness and dimensional stability.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US778743XA | 1954-11-16 | 1954-11-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB778743A true GB778743A (en) | 1957-07-10 |
Family
ID=22140551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB17931/55A Expired GB778743A (en) | 1954-11-16 | 1955-06-21 | Improvements in or relating to plasticized high acetyl cellulose acetate compositions |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB778743A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1992005213A1 (en) * | 1990-09-26 | 1992-04-02 | Eastman Kodak Company | Cellulose ester film and method of manufacture |
| EP3121223A1 (en) | 2015-07-24 | 2017-01-25 | Rhodia Operations | Plasticized cellulose ester derivates, a process for its production and its uses |
-
1955
- 1955-06-21 GB GB17931/55A patent/GB778743A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1992005213A1 (en) * | 1990-09-26 | 1992-04-02 | Eastman Kodak Company | Cellulose ester film and method of manufacture |
| EP3121223A1 (en) | 2015-07-24 | 2017-01-25 | Rhodia Operations | Plasticized cellulose ester derivates, a process for its production and its uses |
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