US5187206A
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US
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Production of cellular plastics by the polyisocyanate polyaddition process, and low-boiling, fluorinated or perfluorinated, tertiary alkylamines as blowing agent-containing emulsions for this purpose
Assignee: BASF SE
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Filing: 1992-06-03
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Granted: 1993-02-16
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Expires: 2012-06-03
Abstract
Abstract A process for the production of cellular plastics by the polyisocyanate polyaddition process, by reacting a) an organic and/or modified organic polyisocyanate with b) at least one relatively high-molecular-weight compound containing at least two reactive hydrogen atoms, and, if desired, c) a low-molecular-weight chain extender and/or crosslinking agent, in the presence of d) a blowing agent e) a catalyst and f) assistants and/or additives, wherein the blowing agent (d) used d1) a low-boiling, fluorinated or perfluorinated tertiary alkylamine, or a mixture of (d1) and at least one physical or chemical blowing agent (d2) which is different from (d1), and blowing agent-containing emulsions comprising the abovementioned blowing agent (d1) or a blowing agent mixture of (d1) and (d2) and the starting components (a), (b), (c) or (b) and (c).
Inventors
- 👤 Otto Volkert
- 👤 Walter Maurer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:08
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/16; C08G18/18; C08J; C08J9/00; C08J9/04; C08J9/12; C08J9/14; C08J9/149; C08J9/143; C08J2203/00; C08J2203/12; C08J2203/14; C08J2203/142; C08J2375/00; C08J2375/04
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
78 words
A process for the production of cellular plastics by the polyisocyanate polyaddition process, by reacting a) an organic and/or modified organic polyisocyanate with b) at least one relatively high-molecular-weight compound containing at least two reactive hydrogen atoms, and, if desired, c) a low-molecular-weight chain extender and/or cross-linking agent, in the presence of d) a blowing agent e) a catalyst and f) assistants and/or additives, wherein the blowing agent (d) used is a low-boiling, fluorinated or perfluorinated, tertiary alkylamine.
Claim 2
Dependent Claim
78 words
A process for the production of cellular plastics by the polyisocyanate polyaddition process, by reacting a) an organic and/or modified organic polyisocyanate with b) at least one relatively high-molecular-weight compound containing at least two reactive hydrogen atoms, and, if desired, c) a low-molecular-weight chain extender and/or cross-linking agent, in the presence of d) a blowing agent e) a catalyst and f) assistants and/or additives, wherein the blowing agent (d) used is a low-boiling, fluorinated or perfluorinated, tertiary alkylamine.
Claim 3
Dependent Claim
54 words
A process as claimed in claim 1, wherein the blowing agent (d) used is a low-boiling, fluorinated or perfluorinated, tertiary alkylamine which is sparingly soluble or insoluble in (a) to (c), or a mixture of such alkylamines, and the alkylamine is emulsified in at least one of the starting components (a), (b) and (c).
Claim 4
Dependent Claim
23 words
A process as claimed in claim 1, wherein the low-boiling fluorinated or perfluorinated, tertiary alkylamine contains from 3 to 9 bonded carbon atoms.
Claim 5
Dependent Claim
15 words
A process as claimed in claim 1, wherein the blowing agent (d) used is perfluorodimethylisopropylamine.
Claim 6
Dependent Claim
48 words
A process as claimed in claim 1, wherein the low-boiling, fluorinated or perfluorinated, tertiary alkylamine as blowing agent (d) is used in an amount from 1 to 40 parts by weight, based on 100 parts by weight of the starting components (a) to (c) or (a) and (b).
Claim 7
Dependent Claim
100 words
A process for the production of cellular plastics by the polyisocyanate polyaddition process, by reacting a) an organic and/or modified organic polyisocyanate with b) at least one relatively high-molecular-weight compound containing at least two reactive hydrogen atoms, and, if desired, c) a low-molecular-weight chain extender and/or cross-linking agent, in the presence of d) a blowing agent e) a catalyst and f) assistants and/or additives, wherein the blowing agent (d) used is a mixture which contains d1) at least one low-boiling, fluorinated or perfluorinated tertiary alkylamine, and d2) at least one physical or chemical blowing agent which is different from (d1).
Claim 8
Dependent Claim
100 words
A process for the production of cellular plastics by the polyisocyanate polyaddition process, by reacting a) an organic and/or modified organic polyisocyanate with b) at least one relatively high-molecular-weight compound containing at least two reactive hydrogen atoms, and, if desired, c) a low-molecular-weight chain extender and/or cross-linking agent, in the presence of d) a blowing agent e) a catalyst and f) assistants and/or additives, wherein the blowing agent (d) used is a mixture which contains d1) at least one low-boiling, fluorinated or perfluorinated tertiary alkylamine, and d2) at least one physical or chemical blowing agent which is different from (d1).
Claim 9
Dependent Claim
96 words
A process as claimed in claim 6, wherein the physical blowing agent (d2) is selected from the group comprising alkanes having 4 to 12 carbon atoms, cycloalkanes having 4 to 6 carbon atoms, linear or cyclic ethers having 2 to 5 carbon atoms, aliphatic carboxylic acid esters having a maximum boiling point of 142° C., aliphatic or cycloaliphatic ketones having 3 to 5 carbon atoms, partially halogenated chlorofluorocarbons having 1 or 2 carbon atoms, perfluorinated, linear or cyclic ethers having 4 to 12 carbon atoms, and fluorinated or perfluorinated hydrocarbons having 3 to 8 carbon atoms.
Claim 10
Dependent Claim
47 words
A process as claimed in claim 6, wherein the physical blowing agent (d2) is selected from the group comprising fluorinated hydrocarbons having 3 to 6 carbon atoms and containing at least one bonded hydrogen atom, and perfluorinated hydrocarbons having 4 to 7 carbon atoms, and mixtures thereof.
Claim 11
Dependent Claim
40 words
A process as claimed in claim 6, wherein the blowing agent mixture (d) contains the fluorinated or perfluorinated, tertiary alkylamine (d1) and the physical blowing agent (d2) which is different from (d1) in a weight ratio of 90:10 to 10:90.
Claim 12
Dependent Claim
39 words
A process as claimed in claim 6, wherein the blowing agent mixture (d) comprising (d1) and the physical blowing agent (d2) which is different from (d1) is emulsified in at least one of starting components (a), (b) and (c).
Claim 13
Dependent Claim
69 words
A process as claimed in claim 6, wherein the chemical blowing agent is selected from the group comprising water, formic acid, organic mono- and polycarboxylic acids having a molecular weight of from 60 to 300, ammonium salts and amine salts of formic acid or organic mono- or polycarboxylic acids having a molecular weight of from 60 to 300, and mixtures of at least two of these chemical blowing agents.
Claim 14
Dependent Claim
63 words
A process as claimed in claim 6, wherein the blowing agent mixture (d) contains, based on the total weight of (d1) and (d2), d1) at least 30 % by weight of at least one low-boiling, fluorinated or perfluorinated, tertiary alkylamine, and d2) a maximum of 70% by weight of at least one further physical or chemical blowing agent which is different from (d1).
Claim 15
Dependent Claim
45 words
A process as claimed in claim 6, wherein the blowing agent (d) comprising (d1) and (d2) is used in an amount from 1 to 40 parts by weight, based on 100 parts by weight of the starting components (a) to (c) or (a) and (b).
References Cited (Backward Citations)
US5104904A
Cited
US5114980A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-02-16 | 1996-08-17 | 1997-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-02-16 | 2000-08-17 | 2001-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-02-16 | 2004-08-17 | 2005-02-16 | $7700.00 | Window Closed / Lapsed |