WO2004056911A2 - A closed cell phenolic foam - Google Patents
A closed cell phenolic foam Download PDFInfo
- Publication number
- WO2004056911A2 WO2004056911A2 PCT/IE2003/000175 IE0300175W WO2004056911A2 WO 2004056911 A2 WO2004056911 A2 WO 2004056911A2 IE 0300175 W IE0300175 W IE 0300175W WO 2004056911 A2 WO2004056911 A2 WO 2004056911A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- weight
- surfactant
- content
- approximately
- oxide content
- Prior art date
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
- C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
-
- 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
- C08J9/143—Halogen containing compounds
-
- 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
- C08J9/143—Halogen containing compounds
- C08J9/144—Halogen containing compounds containing carbon, halogen and hydrogen only
- C08J9/146—Halogen containing compounds containing carbon, halogen and hydrogen only only fluorine as halogen atoms
-
- 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
- C08J2205/00—Foams characterised by their properties
- C08J2205/04—Foams characterised by their properties characterised by the foam pores
- C08J2205/052—Closed cells, i.e. more than 50% of the pores are closed
-
- 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
- C08J2361/00—Characterised by the use of condensation polymers of aldehydes or ketones; Derivatives of such polymers
-
- 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
- C08J2361/00—Characterised by the use of condensation polymers of aldehydes or ketones; Derivatives of such polymers
- C08J2361/04—Condensation polymers of aldehydes or ketones with phenols only
- C08J2361/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
-
- 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
- C08J2483/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
-
- 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
- C08J2483/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
- C08J2483/04—Polysiloxanes
Definitions
- the invention relates to a closed cell phenolic foam and to foam mixtures used in producing such foams.
- Phenolic foams are widely used in building applications in view of their thermal insulation and fire resistant properties. Such phenolic foams are generally prepared by mixing a phenol formaldehyde resin with a blowing agent, a cell stabliliser and a hardener.
- EP - A - 0170357 describes one such process for preparing a phenolic foam using Freon as a blowing agent, aqueous sulphuric acid as a hardener, and a cell stabiliser derived by oxylating castor oil with ethylene oxide or mixtures thereof with propylene oxide.
- Freon is a particular chlorofluorocarbon (CFC).
- EP-A-0439283 describes the use of a complex blend of materials as an alternative blowing agent to a CFC.
- the blend comprises: at least one perfluoroalkane (PFA) (especially perfluoropentane, perfluorohexane or perfluoroheptane); and at least one component selected from a hydrogenated chlorofluorocarbon (HFC) and a specific alkane or cycloalkane.
- PFA perfluoroalkane
- HFC hydrogenated chlorofluorocarbon
- US 4,530,939 describes a process for preparing a foam material wherein a phenol- aldehyde resole resin, a blowing agent and a surfactant are mixed with an acid catalyst to form an admixture which is poured into a forming means and cured.
- the resole resin is stripped using a solvent to reduce viscosity and water content.
- An unbranched dihydroxy either polyglycol is added to the stripped resole resin.
- the surfactant used in the process is an alkyl siloxane alkylene oxide block copolymer.
- the blowing agent is trichloromethane.
- US 3,271,331 describes a mixture for use in producing a foamed phenol-aldehyde resole resin.
- the mixture comprises a phenol-aldehyde resole resin and a siloxane- oxyalkylene copolymer as a foam stabiliser for the foamed phenol-aldehyde resole resin.
- Crosslinking compounds and modifiers are also added to the mixture.
- EP 0899291 describes a thermoplastic resin composition comprising a thermoplastic resin and a clay composite.
- the clay composite is prepared by introducing a silane compound into a swellable silicate.
- a phenolic foam mixture for producing a substantially closed cell phenolic foam comprising a phenolic resin, a polysiloxane copolymer used as a surfactant, a blowing agent, and a catalyst (polymerization initiator), the polysiloxane copolymer having:-
- a polypropylene oxide content of from 15% to 20% by weight.
- the improved phenolic foam of the invention is easily processed and has good long term aged thermal conductivity properties.
- a polysiloxane cell stabiliser as defined is used at a low addition level.
- the polysiloxane content of the surfactant is from 28% to 32% by weight.
- the polyethylene oxide content of the surfactant is preferably from 51% to 55% by weight.
- the polypropylene oxide content of the surfactant is preferably from 16% to 18% by weight.
- the surfactant has a polysiloxane content of approximately 28% by weight, a polyethylene oxide content of approximately 55% by weight and a polypropylene oxide content of approximately 18% by weight.
- the surfactant has a polysiloxane content of approximately 30% by weight, a polyethylene oxide content of approximately 53% by weight, and a polypropylene oxide content of approximately 17% by weight.
- the surfactant has a polysiloxane content of approximately 32% by weight, a polyethylene oxide content of approximately 51% by weight, and a polypropylene oxide content of approximately 16% by weight.
- the surfactant may be present in an amount of at least 0.5 parts by weight of the mixture.
- the invention also provides the use of a surfactant having:-
- a polypropylene oxide content of from 15% to 20% by weight in the manufacture of a substantially closed cell phenolic insulating foam.
- the surfactant is preferably as defined above.
- the invention provides a phenolic insulating foam with a closed cell content of at least 90% prepared from the foam mixture of the invention.
- the invention is based on the surprising finding that closed cell phenolic foams can be produced by using relatively small quantities of specific polysiloxane copolymers as surfactants.
- Polysiloxane copolymers would not normally be considered as suitable components for closed cell phenolic foams. We have however, surprisingly found that certain polysiloxane copolymers can be effectively used as surfactants in producing closed cell phenolic foams.
- the closed cell value may be measured by the method described in B.S. 4370/ASTM D2856.
- the foam of the invention has a closed cell content of greater than 90% when measured by this method.
- the ⁇ (or k) value is measured as described in method 7A of B.S. 4370 part 2 with reference to BS3927. ASTM C177 is equivalent.
- the preferred foam of the invention has a ⁇ value at 30 days or longer of less than about 0.018 W/m.K. Even more surprisingly the thermal conductivity remains stable when tested at high temperatures of about 70°C over prolonged periods, which is the preferred temperature to accelerate ⁇ -ageing of foams in the European standard EN 13166.
- Foams were manufactured in the laboratory using the formulations below. The chemicals were mixed by means of a high speed laboratory stirrer and poured into an open topped mould, with an approximate volume of 1 litre. The mould was then placed in an oven at 55 °C for a minimum of 3 hours. The foam was then de-moulded and allowed to cool to ambient temperature before cutting and testing.
- the surfactants used in the above examples are each polysiloxane copolymers available from OSi (Crompton Corporation). Nia L6915
- Discontinuous block foam was manufactured on a commercial scale plant to produce blocks of dimensions approximately 2500 x 1000 x 1000 mm.
- the foam mix was dispensed through a low pressure mixer into a heated mould.
- the product was put through a three hour curing cycle prior to de-mould.
- the foam was manufactured according to the following formulation.
- the density of the foam thus formed was 35 kg/m 3 and the foam of this example has excellent thermal conductivity stability as follows:
- HCFC's used in the phenolic foam blowing agent blend of the invention may be selected, or example, from one or more of:
- blowing agent blend may include a suitable hydrogenated fluorocarbon selected, for example, from one or more of:
- the HFC's may be represented by the formula C H P FQ whenever:
- R is an integer from 1 to 4
- P is an integer from 1 to 5
- Q (2R+2)-P for an open chain HFC and (2R-P) for a cyclic HFC.
- the phenolic foam blowing agent blend may include an alkane, especially n-pentane and/or iso-pentane, and/or a cycloalkane, especially cyclo-pentane, or be purely alkane based.
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)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03780560A EP1572790A2 (en) | 2002-12-20 | 2003-12-22 | A closed cell phenolic foam |
AU2003288485A AU2003288485A1 (en) | 2002-12-20 | 2003-12-22 | A closed cell phenolic foam |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IE2002/0986 | 2002-12-20 | ||
IE20020986 | 2002-12-20 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2004056911A2 true WO2004056911A2 (en) | 2004-07-08 |
WO2004056911A3 WO2004056911A3 (en) | 2004-09-10 |
Family
ID=30776578
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IE2003/000175 WO2004056911A2 (en) | 2002-12-20 | 2003-12-22 | A closed cell phenolic foam |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1572790A2 (en) |
AU (1) | AU2003288485A1 (en) |
GB (1) | GB2398570B (en) |
PL (1) | PL375897A1 (en) |
WO (1) | WO2004056911A2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019030239A1 (en) * | 2017-08-10 | 2019-02-14 | Kingspan Holdings (Irl) Limited | Phenolic foam and method of manufacture thereof |
WO2022043561A1 (en) * | 2020-08-31 | 2022-03-03 | Kingspan Holdings (Irl) Limited | Phenolic foam |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3271331A (en) * | 1963-10-10 | 1966-09-06 | Union Carbide Corp | Phenolic foams stabilized by siloxane-oxyalkylene copolymers |
US4070313A (en) * | 1976-01-16 | 1978-01-24 | Union Carbide Corporation | Non punking phenolic foam |
US4530939A (en) * | 1982-02-11 | 1985-07-23 | The Dow Chemical Company | Low K-factor closed cell phenol-aldehyde foam and process for preparation thereof |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4205135A (en) * | 1976-03-18 | 1980-05-27 | The Celotex Corporation | Closed cell phenolic foam |
EP0225321B1 (en) * | 1985-06-10 | 1991-04-03 | The Dow Chemical Company | Process for the preparation of low k-factor closed cell phenol-aldehyde foam |
-
2003
- 2003-12-22 GB GB0329775A patent/GB2398570B/en not_active Expired - Lifetime
- 2003-12-22 WO PCT/IE2003/000175 patent/WO2004056911A2/en not_active Application Discontinuation
- 2003-12-22 EP EP03780560A patent/EP1572790A2/en not_active Withdrawn
- 2003-12-22 PL PL03375897A patent/PL375897A1/en unknown
- 2003-12-22 AU AU2003288485A patent/AU2003288485A1/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3271331A (en) * | 1963-10-10 | 1966-09-06 | Union Carbide Corp | Phenolic foams stabilized by siloxane-oxyalkylene copolymers |
US4070313A (en) * | 1976-01-16 | 1978-01-24 | Union Carbide Corporation | Non punking phenolic foam |
US4530939A (en) * | 1982-02-11 | 1985-07-23 | The Dow Chemical Company | Low K-factor closed cell phenol-aldehyde foam and process for preparation thereof |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019030239A1 (en) * | 2017-08-10 | 2019-02-14 | Kingspan Holdings (Irl) Limited | Phenolic foam and method of manufacture thereof |
WO2022043561A1 (en) * | 2020-08-31 | 2022-03-03 | Kingspan Holdings (Irl) Limited | Phenolic foam |
Also Published As
Publication number | Publication date |
---|---|
AU2003288485A1 (en) | 2004-07-14 |
AU2003288485A8 (en) | 2004-07-14 |
EP1572790A2 (en) | 2005-09-14 |
GB2398570B (en) | 2006-01-11 |
IE20030957A1 (en) | 2004-06-30 |
GB2398570A (en) | 2004-08-25 |
GB0329775D0 (en) | 2004-01-28 |
PL375897A1 (en) | 2005-12-12 |
WO2004056911A3 (en) | 2004-09-10 |
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