Patent US1025926A successfully refreshed from Google Patents.
Patent EP0508649A1 successfully refreshed from Google Patents.
EP0508649A1
Expired / Lapsed
EP
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Manufacture of rigid foams and compositions therefor
Assignee: Imperial Chemical Industries Ltd
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Filing: 1992-03-25
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Granted: —
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Expires: 2012-03-25
Abstract
Abstract The use of a liquid for the preparation of a rigid polyurethane and/or polyisocyanurate foam by reacting a polyisocyanate and a polyol in the presence of a blowing agent characterised in that the liquid is an inert, insoluble, non-blowing liquid. CFC-free foams may be obtained showing good insulating properties.
Inventors
- 👤 Rik De Vos
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 19:42
CPC Classifications
C; C08; C08G; C08G18/00; C08J; C08J9/00; C08J9/04; C08J9/12; C08J9/14; C08J9/143; C08J9/144; C08G18/06; C08G18/28; C08G18/65; C08G18/66; C08G18/6666; C08G18/667; C08G18/6674; C08J9/0014; C08G2110/00; C08G2110/0008; C08G2110/0033; C08G2110/0041; C08G2110/0058; C08G2110/0066; C08J2375/00; C08J2375/04
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
40 words
The use of a liquid for the preparation of a rigid polyurethane and/or polyisocyanurate foam by reacting a polyisocyanate and a polyol in the presence of a blowing agent characterised in that the liquid is an inert, insoluble, non-blowing liquid.
Claim 2
Dependent Claim
26 words
The use according to claim 1 characterised in that a blowing agent is used which has a boiling point between -70°C and 0°C at 1 bar.
Claim 3
Dependent Claim
33 words
The use according to claims 1-2 characterised in that a blowing agent is used which is selected amongst the group consisting of CHClF₂, CH₂F₂, CF₃CH₂F, CF₂HCF₂H, CH₃CClF₂, C₂H₄F₂, C₂HF₅, C₂HClF₄ and mixtures thereof.
Claim 4
Dependent Claim
14 words
The use according to claim 1 characterised in that the blowing agent is water.
Claim 5
Dependent Claim
21 words
The use according to claims 1-4 characterised in that the inert, insoluble, non-blowing liquid is a fluorinated inert, insoluble, non-blowing liquid.
Claim 6
Dependent Claim
33 words
The use according to claims 1-5 characterised in that the inert, insoluble, non-blowing liquid is selected from the group consisting of fluorinated hydrocarbons, fluorinated ethers, fluorinated tertiary amines, fluorinated amino-ethers and fluorinated sulfones.
Claim 7
Dependent Claim
26 words
The use according to claims 1-6 characterised in that the inert, insoluble, non-blowing liquid is selected from the group consisting of fluorinated ethers and fluorinated amino-ethers.
Claim 8
Dependent Claim
14 words
The use according to claims 1-7, characterised in that additionally a surfactant is used.
Claim 9
Dependent Claim
15 words
The use according to claim 8 characterised in that the surfactant is a fluorinated surfactant.
Claim 10
Dependent Claim
27 words
The use according to claims 1-9 characterised in that the amount of blowing agent is 1-20 parts by weight per 100 parts by weight of reaction system.
Claim 11
Dependent Claim
26 words
The use according to claims 8-10 characterised in that the amount of surfactant is 0.02-5 parts by weight per 100 parts by weight of reaction system.
Claim 12
Dependent Claim
29 words
The use according to claims 1-11 characterised in that the amount of inert, insoluble, non-blowing liquid is 0.02-5 parts by weight per 100 parts by weight of reaction system.
Claim 13
Dependent Claim
10 words
Polyisocyanate or polyol composition comprising an inert, insoluble, non-blowing liquid.
Claim 14
Dependent Claim
23 words
Polyisocyanate or polyol composition according to claim 13, characterised in that the inert, insoluble, non-blowing liquid is a fluorinated inert, insoluble, non-blowing liquid.
Claim 15
Dependent Claim
37 words
Polyisocyanate or polyol composition according to claims 13 and 14, characterised in that the inert, insoluble, non-blowing liquid is selected from the group consisting of fluorinated hydrocarbons, fluorinated ethers, fluorinated tertiary amines, fluorinated amino-ethers and fluorinated sulfones.
Claim 16
Dependent Claim
23 words
Polyisocyanate or polyol composition according to claims 13-15,characterised in that the inert, insoluble, non-blowing liquid is selected from fluorinated ethers and fluorinated amino-ethers.
Claim 17
Dependent Claim
17 words
Polyisocyanate or polyol composition according to claims 13-16, characterised in that the composition further comprises a surfactant.
Claim 18
Dependent Claim
17 words
Polyisocyanate or polyol composition according to claim 17, characterised in that the surfactant is a fluorinated surfactant.
Claim 19
Dependent Claim
18 words
Polyisocyanate or polyol composition according to claims 13-18, characterised in that the composition also comprises a blowing agent.
Claim 20
Dependent Claim
25 words
Polyisocyanate or polyol composition according to claim 18 characterised in that the blowing agent has a boiling point between -70° and 0°C at 1 bar.
Claim 21
Dependent Claim
32 words
Polyisocyanate or polyol composition according to claim 20 characterised in that the blowing agent is selected from the group consisting of CHClF₂, CH₂F₂, CF₃CH₂F, CF₂HCF₂H, CH₃CClF₂, C₂H₄F₂, C₂HF₅, C₂HClF₄ and mixtures thereof.
Claim 22
Dependent Claim
32 words
Polyisocyanate or polyol composition according to claims 13-21 characterised in that the amount of inert, insoluble, non-blowing liquid is 0.05-10 parts by weight per 100 parts by weight of polyisocyanate or polyol.
Claim 23
Dependent Claim
29 words
Polyisocyanate or polyol composition according to claims 17-22, characterised in that the amount of surfactant is 0.05-10 parts by weight per 100 parts by weight of polyisocyanate or polyol.
Claim 24
Dependent Claim
30 words
Polyisocyanate or polyol composition according to claims 19-23, characterized in that the amount of blowing agent is 2-50 parts by weight per 100 parts by weight of polyisocyanate or polyol.
Claim 25
Dependent Claim
31 words
Polyol composition according to claims 13-19 characterised in that the blowing agent is water optionally together with a blowing agent having a boiling point between -70°C and 0°C at 1 bar.
References Cited (Backward Citations)
EP0355713A2
Cited
EP0405439A2
Cited
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