GB946300A - Polymerization process - Google Patents
Polymerization processInfo
- Publication number
- GB946300A GB946300A GB2551260A GB2551260A GB946300A GB 946300 A GB946300 A GB 946300A GB 2551260 A GB2551260 A GB 2551260A GB 2551260 A GB2551260 A GB 2551260A GB 946300 A GB946300 A GB 946300A
- Authority
- GB
- United Kingdom
- Prior art keywords
- diisocyanate
- lithium
- hydrocarbon
- substituted
- morpholine
- 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
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/67—Unsaturated compounds having active hydrogen
- C08G18/69—Polymers of conjugated dienes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08C—TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
- C08C19/00—Chemical modification of rubber
- C08C19/30—Addition of a reagent which reacts with a hetero atom or a group containing hetero atoms of the macromolecule
- C08C19/42—Addition of a reagent which reacts with a hetero atom or a group containing hetero atoms of the macromolecule reacting with metals or metal-containing groups
- C08C19/44—Addition of a reagent which reacts with a hetero atom or a group containing hetero atoms of the macromolecule reacting with metals or metal-containing groups of polymers containing metal atoms exclusively at one or both ends of the skeleton
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
A conjugated diolefinie hydrocarbon containing 4 to 8 carbon atoms is polymerized in the presence of a metallic lithium or organo lithium compound, the reaction terminated by adding an epoxidised monoolefinic hydrocarbon or a compound having the formula R1R2C=O in which R1 and R2 may be the same or different and may be hydrogen or phenyl radicals or alkyl hydrocarbon radicals and the contacting this product with a proton donor. Specified diolefins are butadiene, isoprene, 2-3-dimethyl-butadiene and piperylene. The lithium compounds include lithium hydrocarbons, both saturated and unsaturated, and aryl, alkylaryl and aralkyl lithium compounds, examples are methyl lithium, alkyl lithium, phenyl lithium, methylene dilithium, and lithium naphthalene. Specified terminating agents include formaldehyde, acetaldehyde, benzaldehyde, acetone and benzophenone with ethylene oxide the preferred epoxidised hydrocarbon. The polymerization preferably takes place at between -120 DEG C. and 60 DEG C. in an inert liquid e.g. a hydrocarbon, or an ether such as tetrahydrofuran. Polyurethane foams may be produced by reacting one of the above polymers with a diisocyanate and a foaming agent in the presence of a basic catalyst. The diisocyanate may be 1.3-substituted propylene diisocyanate, the 1.5-substituted pentylene-1-diisocyanate, the 1.4-substituted cyclohexylene-1-diisocyanate, toluene -2.4-diisocyanate, and ethylbenzene 2.4.6-triisocyanate. Water is the specified foaming agent while the basic catalyst may be an amine e.g. triethylenediamine, dimethylaniline, morpholine, N-methyl morpholine and pyridine. The reaction may take place in two stages, in the first of which the polymer is reacted with a diisocyanate in the presence of a basic catalyst and in the second of which, the foaming agent is added to the product of the first stage. The foam may be cured. In examples (11) a hydroxylated butadiene polymer, N-methyl morpholine and toluene-2.4-diisocyanate mixture foamed using is a mixture of N-methylmorpholine and water. (12) Triethylene diamine is substituted for the morpholine and (13) the procedure of Ex (12) is applied to a hydroxylated polyisoprene.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA791304 | 1960-01-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB946300A true GB946300A (en) | 1964-01-08 |
Family
ID=4141161
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2551260A Expired GB946300A (en) | 1960-01-28 | 1960-07-21 | Polymerization process |
Country Status (3)
Country | Link |
---|---|
BE (1) | BE599397A (en) |
DE (1) | DE1520457A1 (en) |
GB (1) | GB946300A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2117778A (en) * | 1982-03-19 | 1983-10-19 | Nippon Zeon Co | Method for modifying unsaturated polymer rubber |
DE3315525A1 (en) * | 1982-04-30 | 1983-11-03 | Nippon Zeon Co., Ltd., Tokyo | RUBBER COMPOSITION |
ES2130999A1 (en) * | 1997-06-03 | 1999-07-01 | Betere Fab Lucia Antonio | Foams based on alkene-urethane copolymers and a process for their cold vulcanisation |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5645923B2 (en) * | 1973-02-12 | 1981-10-29 | ||
US4839431A (en) * | 1986-12-31 | 1989-06-13 | Shell Oil Company | Elastomer comprising at least one conjugated olefin group and method of making same |
-
0
- BE BE599397D patent/BE599397A/xx unknown
-
1960
- 1960-07-21 GB GB2551260A patent/GB946300A/en not_active Expired
- 1960-08-12 DE DE19601520457 patent/DE1520457A1/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2117778A (en) * | 1982-03-19 | 1983-10-19 | Nippon Zeon Co | Method for modifying unsaturated polymer rubber |
DE3315525A1 (en) * | 1982-04-30 | 1983-11-03 | Nippon Zeon Co., Ltd., Tokyo | RUBBER COMPOSITION |
GB2121055A (en) * | 1982-04-30 | 1983-12-14 | Nippon Zeon Co | Benzophenone-modified rubber composition |
ES2130999A1 (en) * | 1997-06-03 | 1999-07-01 | Betere Fab Lucia Antonio | Foams based on alkene-urethane copolymers and a process for their cold vulcanisation |
Also Published As
Publication number | Publication date |
---|---|
DE1520457A1 (en) | 1969-02-27 |
BE599397A (en) |
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