GB1011283A - Improvements in and relating to polycarbonates - Google Patents
Improvements in and relating to polycarbonatesInfo
- Publication number
- GB1011283A GB1011283A GB4025561A GB4025561A GB1011283A GB 1011283 A GB1011283 A GB 1011283A GB 4025561 A GB4025561 A GB 4025561A GB 4025561 A GB4025561 A GB 4025561A GB 1011283 A GB1011283 A GB 1011283A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ester
- acid
- diphenyl
- aromatic
- reacted
- 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
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G64/00—Macromolecular compounds obtained by reactions forming a carbonic ester link in the main chain of the macromolecule
- C08G64/02—Aliphatic polycarbonates
- C08G64/0208—Aliphatic polycarbonates saturated
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polyesters Or Polycarbonates (AREA)
Abstract
Polycarbonates are made by reacting 2,2,4,4-tetramethyl-1,3-cyclobutane diol (or an ester thereof) with a di-ester of carbonic acid. Reaction is effected at 50-350 DEG C. possibly in the presence of a catalyst, e.g. magnesium, lithium hydroxide, lithium acetate, zinc oxide, lead oxide, manganese dioxide, a titanium ester or an alkyl zinc. The reaction mixture may also include (a) another dihydric alcohol, which may be aliphatic, cycloaliphatic or aromatic; (b) a dihydric phenol which may be a bisphenol, a dihydroxybenzene, a dihydroxybiphenyl or a dihydroxynaphthalene; (c) a dicarboxylic acid (or an ester or anhydride thereof), which may be saturated or unsaturated aliphatic, cycloaliphatic or aromatic; (d) a hydroxycarboxylic acid which may be aliphatic or aromatic, and in which all three reactants may be reacted simultaneously or the di-ester of carbonic acid may first be reacted with the cyclobutanediol and the resulting bis-(carbonate ester) then reacted with the hydroxy acid. In examples polymers were made by reacting 2,2,4,4 - tetramethyl - 1:3 - cyclobutanediol and diphenyl or dibutyl carbonate, possibly together with bisphenol A, 2,2-(4,41-dihydroxy-3, 31-dimethoxy-diphenyl) propane, 2,2-(4,41-dihydroxy -3,31 - dimethyl - diphenyl) propane or adipic acid.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US7318760A | 1960-12-02 | 1960-12-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1011283A true GB1011283A (en) | 1965-11-24 |
Family
ID=22112257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4025561A Expired GB1011283A (en) | 1960-12-02 | 1961-11-10 | Improvements in and relating to polycarbonates |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE1545069A1 (en) |
| GB (1) | GB1011283A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4160853A (en) | 1976-04-28 | 1979-07-10 | Ppg Industries, Inc. | Catalyst for making polycarbonate diols for use in polycarbonate urethanes |
| WO2011063172A3 (en) * | 2009-11-20 | 2012-07-19 | Dentsply International Inc. | Dental materials using 2,2,4,4-tetramethyl-1,3-cyclobutandiol |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6037436A (en) * | 1996-12-28 | 2000-03-14 | Eastman Chemical Company | Process for preparing poly (2,2,4,4-tetramethyl-1,3-cyclobutylene carbonate) |
-
1961
- 1961-11-10 GB GB4025561A patent/GB1011283A/en not_active Expired
- 1961-11-25 DE DE19611545069 patent/DE1545069A1/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4160853A (en) | 1976-04-28 | 1979-07-10 | Ppg Industries, Inc. | Catalyst for making polycarbonate diols for use in polycarbonate urethanes |
| WO2011063172A3 (en) * | 2009-11-20 | 2012-07-19 | Dentsply International Inc. | Dental materials using 2,2,4,4-tetramethyl-1,3-cyclobutandiol |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1545069A1 (en) | 1969-11-20 |
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