GB821342A - Polyurethane foams and method of making same - Google Patents
Polyurethane foams and method of making sameInfo
- Publication number
- GB821342A GB821342A GB31360/56A GB3136056A GB821342A GB 821342 A GB821342 A GB 821342A GB 31360/56 A GB31360/56 A GB 31360/56A GB 3136056 A GB3136056 A GB 3136056A GB 821342 A GB821342 A GB 821342A
- Authority
- GB
- United Kingdom
- Prior art keywords
- polyester
- reactants
- gas
- cross
- liquefied gas
- 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
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
- C08J9/127—Mixtures of organic and inorganic blowing agents
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
- C08J9/14—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent organic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/14—Saturated hydrocarbons, e.g. butane; Unspecified hydrocarbons
- C08J2203/142—Halogenated saturated hydrocarbons, e.g. H3C-CF3
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2375/04—Polyurethanes
- C08J2375/06—Polyurethanes from polyesters
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Polyurethanes Or Polyureas (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
A method of making polyurethane foam from a dihydroxy terminated polyester or polyether having a molecular weight of at least 500 and an organic polyisocyanate having 2 or 3 functional isocyanate groups, comprises the steps of uniformly distributing a liquefied halogen substituted alkane containing at least one fluorine atom in its molecule, having a boiling-point at one atmosphere pressure of not lower than - 60 DEG F. and not higher than 80 DEG F. in one of the foam-forming reactants, said liquefied gas being chemically inert to the reactants under the conditions of reaction, mixing the reactants and permitting the temperature of the mixture to rise during the ensuing reaction above the boiling-point of said liquefied gas whereby a porous polyurethane foam is produced by expansion of the gas. If water is present, blowing action is also produced by its reaction with isocyanate groups. The gas is preferably one which is soluble in the reactants, the higher its solubility the lower being the boiling-point which it may possess. Examples of suitable gases are methyl chloride, dichlorodifluoromethane, monochlorodifluoromethane, monofluorodichloromethane and dichlorotetrafluoroethane. Such liquefied gas may also contain dissolved hydrocarbons of up to 3 carbon atoms, or inorganic gases such as carbon dioxide and nitrous oxide. The type of polyester (linear or cross-linked, of molecular weight between about 1500 and about 4000) to be used, depends on whether a flexible or a rigid product is to be prepared. All or part of the polyester can be replaced by polyethers, such as ethylene, mixed ethylene propylene, polytri- or tetramethylene ether, polyneopentylene ether and polypentamethylene ether glycols. Cross-linking of the product can be effected by the use of tri-isocyanates in admixture with diisocyanates and by the use of cross-linking agents such as trimethylol propane and aliphatic or aromatic glycols. In an example, an adipic acid/diethylene glycol/trimethylolpropane polyester has dichlorodifluoromethane dissolved in it and is then reacted with mixed 2,4- and 2,6-diisocyanates (in a continuous process) in the presence of water, an emulsifier and the bisdiethylaminoethyl ester of adipic acid. Paraffin oil may be added to control pore size.ALSO:A method of making polyurethane foam from a dihydroxy terminated polyester or polyether having a molecular weight of at least 500 and an organic polyisocyanate having 2 or 3 functional isocyanate groups, comprises the steps of uniformly distributing a liquefied halogen substituted alkane containing at least one fluorine atom in its molecule, having a boiling point at one atmosphere pressure of not lower than -60 DEG F. and not higher than 80 DEG F. in one of the foam-forming reactant, said liquefied gas being chemically inert to the reactants under the conditions of reaction, mixing the reactants and permitting the temperature of the mixture to rise during the ensuing reaction above the boiling point of said liquefied gas whereby a porous polyurethane foam is produced by expansion of the gas. If water is present, blowing action is also produced by its reaction with isocyanate groups. The gas is preferably one which is soluble in the reactants, the higher its solubility the lower being the boiling point which it may possess. Examples of suitable gases are methyl chloride, dichlorodifluoromethane, monochlorodifluoromethane, monofluorodichloro methane and dichlorotetrafluoro ethane. Such liquefied gas may also contain dissolved hydrocarbons of up to 3 carbon atoms, or inorganic gases such as carbon dioxide and nitrous oxide. The type of polyester (linear or cross-linked, of molecular weight between about 1500 and about 4000) to be used, depends on whether a flexible or a rigid product is to be prepared. All or part of the polyester can be replaced by polyethers, such as ethylene, mixed ethylene propylene, polytri- or tetramethylene ether, polyneopentylene ether and polypentamethylene ether glycols. Cross-linking of the product can be effected by the use of tri-isocyanates in admixture with diisocyanates and by the use of cross-linking agents such as trimethylol propane and aliphatic or aromatic glycols. In an example, an adipic acid/diethylene glycol/trimethylolpropane polyester has dichlorodifluoromethane dissolved in it and is then reacted with mixed 2, 4- and 2, 6- diisocyanates (in a continuous process) in the presence of water, an emulsifier and the bis, diethylaminoethyl ester of adipic acid. Paraffin oil may be added to control pore size.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US821342XA | 1955-10-20 | 1955-10-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB821342A true GB821342A (en) | 1959-10-07 |
Family
ID=22169279
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB31360/56A Expired GB821342A (en) | 1955-10-20 | 1956-10-15 | Polyurethane foams and method of making same |
Country Status (5)
Country | Link |
---|---|
DE (1) | DE1045644B (en) |
FR (1) | FR1161239A (en) |
GB (1) | GB821342A (en) |
IT (1) | IT559499A (en) |
NL (1) | NL211547A (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3091551A (en) * | 1959-01-26 | 1963-05-28 | Wyandotte Chemicals Corp | Process of spraying a polyether-based polyurethane foam |
US3099516A (en) * | 1960-08-29 | 1963-07-30 | Philco Corp | Method of molding a foam plastic having skins on selected surface portions |
US3138562A (en) * | 1959-05-23 | 1964-06-23 | Bayer Ag | Cellular polyurethane plastics |
US3139410A (en) * | 1960-05-20 | 1964-06-30 | Ici Ltd | Manufacture of polyurethane foams |
US3184419A (en) * | 1958-02-06 | 1965-05-18 | Dunlop Rubber Co | Method for the production of polyurethane foamed material |
US3362919A (en) * | 1965-02-04 | 1968-01-09 | Pittsburgh Plate Glass Co | Process for foaming thermoset organic materials |
US3440222A (en) * | 1963-07-01 | 1969-04-22 | Stauffer Chemical Co | Flame resistant phosphoramidate-polyester reaction products |
US3524825A (en) * | 1957-05-29 | 1970-08-18 | Gen Motors Corp | Polyurethane foam and method for making same |
GB2116574A (en) * | 1982-03-19 | 1983-09-28 | Ici Plc | Method of manufacturing polyurethane foams |
FR2569353A1 (en) * | 1984-08-22 | 1986-02-28 | Atochem | HOMOGENEOUS COMPOSITIONS BASED ON HALOGENATED POLYHYDROXYL COMPOUNDS, AND HALOGENATED ALKANES, THEIR APPLICATION IN THE MANUFACTURE OF RIGID FOAMS |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3080329A (en) * | 1958-07-31 | 1963-03-05 | Du Pont | Polyurethane cellular materials |
FR1247044A (en) * | 1959-01-26 | 1960-11-25 | Ets Kuhlmann | Polyurethane foams based on polyethers swollen with the aid of solvents, process for their manufacture and applications |
US3007884A (en) * | 1959-06-10 | 1961-11-07 | Allied Chem | Cellular polyurethane resin containing primary-2-hydroxyethylphosphate and method ofpreparing same |
US3034996A (en) * | 1959-06-12 | 1962-05-15 | Allied Chem | Preparation of low density polyurethane foam |
DE1109364B (en) * | 1959-06-12 | 1961-06-22 | Schickedanz Ver Papierwerk | Process for the production of moisture-absorbing, elastic, water-unstable foams for hygienic articles |
NL253811A (en) * | 1959-07-14 | |||
NL254612A (en) * | 1959-08-12 | |||
DE1182807B (en) * | 1960-03-02 | 1964-12-03 | Mobay Chemical Corp | Process for the one-step production of foams containing urethane groups |
US3398106A (en) * | 1960-04-26 | 1968-08-20 | Union Carbide Corp | Tin-containing catalyst for isocyanate reactions |
BE617874A (en) * | 1962-05-22 | |||
DE1144915B (en) * | 1966-11-04 | 1963-03-07 | Wolfen Filmfab Veb | Process for the production of polyurethane foams |
DE2738719A1 (en) * | 1977-08-27 | 1979-03-08 | Bayer Ag | Process for the production of foamed plastics |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR744864A (en) * | 1933-04-27 | |||
DE860109C (en) * | 1941-04-20 | 1952-12-18 | Bayer Ag | Artificial sponges |
DE913474C (en) * | 1941-04-20 | 1954-06-14 | Bayer Ag | Process for the production of highly porous, solid or elastic plastic bodies |
FR1075964A (en) * | 1952-09-13 | 1954-10-21 | Wingfoot Corp | Improved foamable mixture and method of preparing a laminated edifice comprising application |
-
0
- NL NL211547D patent/NL211547A/xx unknown
- IT IT559499D patent/IT559499A/it unknown
-
1956
- 1956-10-15 GB GB31360/56A patent/GB821342A/en not_active Expired
- 1956-10-19 FR FR1161239D patent/FR1161239A/en not_active Expired
- 1956-10-20 DE DEG20768A patent/DE1045644B/en active Pending
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3524825A (en) * | 1957-05-29 | 1970-08-18 | Gen Motors Corp | Polyurethane foam and method for making same |
US3184419A (en) * | 1958-02-06 | 1965-05-18 | Dunlop Rubber Co | Method for the production of polyurethane foamed material |
US3091551A (en) * | 1959-01-26 | 1963-05-28 | Wyandotte Chemicals Corp | Process of spraying a polyether-based polyurethane foam |
US3138562A (en) * | 1959-05-23 | 1964-06-23 | Bayer Ag | Cellular polyurethane plastics |
US3139410A (en) * | 1960-05-20 | 1964-06-30 | Ici Ltd | Manufacture of polyurethane foams |
US3099516A (en) * | 1960-08-29 | 1963-07-30 | Philco Corp | Method of molding a foam plastic having skins on selected surface portions |
US3440222A (en) * | 1963-07-01 | 1969-04-22 | Stauffer Chemical Co | Flame resistant phosphoramidate-polyester reaction products |
US3362919A (en) * | 1965-02-04 | 1968-01-09 | Pittsburgh Plate Glass Co | Process for foaming thermoset organic materials |
GB2116574A (en) * | 1982-03-19 | 1983-09-28 | Ici Plc | Method of manufacturing polyurethane foams |
FR2569353A1 (en) * | 1984-08-22 | 1986-02-28 | Atochem | HOMOGENEOUS COMPOSITIONS BASED ON HALOGENATED POLYHYDROXYL COMPOUNDS, AND HALOGENATED ALKANES, THEIR APPLICATION IN THE MANUFACTURE OF RIGID FOAMS |
EP0177381A1 (en) * | 1984-08-22 | 1986-04-09 | Elf Atochem S.A. | Homogeneous compositions on the basis of halogenated polyhydroxy compounds and halogenated alkanes; their use in the preparation of rigid foams |
US4826623A (en) * | 1984-08-22 | 1989-05-02 | Atochem | Homogeneous microemulsion compositions based on halogenated polyhydroxylated compounds and halogenated alkanes and their application to the manufacture of rigid foams |
Also Published As
Publication number | Publication date |
---|---|
FR1161239A (en) | 1958-08-25 |
IT559499A (en) | |
DE1045644B (en) | 1958-12-04 |
NL211547A (en) |
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