GB946300A - Polymerization process - Google Patents

Polymerization process

Info

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
Application number
GB2551260A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Polysar Ltd
Polymer Corp
Original Assignee
Polysar Ltd
Polymer Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Polysar Ltd, Polymer Corp filed Critical Polysar Ltd
Publication of GB946300A publication Critical patent/GB946300A/en
Expired legal-status Critical Current

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.
GB2551260A 1960-01-28 1960-07-21 Polymerization process Expired GB946300A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Cited By (4)

* Cited by examiner, † Cited by third party
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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