US5205956A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of plastic foams, preferably rigid foams containing urethane groups or urethane and isocyanurate groups, and blowing agent-containing emulsions for this purpose
Assignee: BASF SE
•
Filing: 1992-06-26
•
Granted: 1993-04-27
•
Expires: 2012-06-26
Abstract
Abstract A process for the production of plastic foams, preferably rigid foams containing urethane groups or urethane and isocyanurate groups, 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, if desired, f) assistants and/or additives, in which the blowing agent (d) used is at least one vinylfluoroalkane of the formula CH 2 ═CH--C n F 2n+1 in which n is an integer from 1 to 6, (di), or a mixture of at least one such vinylfluoroalkane (di) and at least one further physical and/or chemical blowing agent (dii) which is different from (di), blowing agent-containing emulsions which contain at least one vinylfluoroalkane and at least one starting component (a), (b), (c) or (b) and (c) and said plastic foams containing at least one vinylfluoroalkane as insulating gas.
Inventors
- 👤 Otto Volkert
- 👤 Corinne A. Meynard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:45
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/04; C08J9/12; C08J9/14; C08J9/149; C08J9/143; C08J9/144; C08J9/146; C08J2203/00; C08J2203/14; C08J2203/142; C08J2203/144; C08J2203/146; C08J2203/16; C08J2203/162; C08J2323/00; C08J2323/02; C08J2325/00; C08J2325/02; C08J2325/04; C08J2325/06; C08J2361/00; C08J2375/00; C08J2375/04; Y; Y10; Y10S; Y10S521/00; Y10S521/91
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
70 words
A blowing agent-containing emulsion which contains at least one vinylfluoroalkane of the formula CH.sub.2 ═CH--C.sub.n F.sub.2n+1 in which n is an integer from 1 to 6, (di), and at least one organic and/or modified organic polyisocyanate (a) or at least one relatively high-molecular-weight compound containing at least two reactive hydrogen atoms (b), or at least one low-molecular-weight chain extender and/or crosslinking agent (c), or a mixture of (b) and (c).
Claim 2
Dependent Claim
70 words
A blowing agent-containing emulsion which contains at least one vinylfluoroalkane of the formula CH.sub.2 ═CH--C.sub.n F.sub.2n+1 in which n is an integer from 1 to 6, (di), and at least one organic and/or modified organic polyisocyanate (a) or at least one relatively high-molecular-weight compound containing at least two reactive hydrogen atoms (b), or at least one low-molecular-weight chain extender and/or crosslinking agent (c), or a mixture of (b) and (c).
Claim 3
Dependent Claim
150 words
A blowing agent-containing emulsion which comprises from 1 to 40 parts by weight, based on 100 parts by weight of (b) or (b) and (c), of one or more vinylfluoroalkanes of the formula CH 2 ═CH--C n F 2n+1 in which n is an integer from 1 to 6, (di), from 0 to 5 parts by weight, based on 100 parts by weight of (b) or (b) and (c), of water, (dii), from 0 to 36 parts by weight, based on 100 parts by weight of (b) or (b) and (c), of at least one further, low-boiling, physical blowing agent (dii) which is different from (di) and is only sparingly soluble or insoluble in the starting components (a), (b) and (c), and at least one relatively high-molecular-weight compound containing at least two reactive hydrogen atoms (b), or a mixture of (b) and a low-molecular-weight chain extender and/or crosslinking agent (c).
Claim 4
Dependent Claim
150 words
A blowing agent-containing emulsion which comprises from 1 to 40 parts by weight, based on 100 parts by weight of (b) or (b) and (c), of one or more vinylfluoroalkanes of the formula CH 2 ═CH--C n F 2n+1 in which n is an integer from 1 to 6, (di), from 0 to 5 parts by weight, based on 100 parts by weight of (b) or (b) and (c), of water, (dii), from 0 to 36 parts by weight, based on 100 parts by weight of (b) or (b) and (c), of at least one further, low-boiling, physical blowing agent (dii) which is different from (di) and is only sparingly soluble or insoluble in the starting components (a), (b) and (c), and at least one relatively high-molecular-weight compound containing at least two reactive hydrogen atoms (b), or a mixture of (b) and a low-molecular-weight chain extender and/or crosslinking agent (c).
Claim 5
Dependent Claim
156 words
A blowing agent-containing emulsion which comprises from 1 to 40 parts by weight, based on 100 parts by weight of (b) or (b) and (c), of one or more vinylfluoroalkanes of the formula CH 2 ═C n F 2n+1 in which n is an integer from 1 to 6, (di), from 0 to 5 parts by weight, based on 100 parts by weight of (b) or (b) and (c), of water, (dii), from 0 to 36 parts by weight, based on 100 parts by weight of (b) or (b) and (c), of at least one low-boiling, fluorinated or perfluorinated organic compound which is only sparingly soluble or insoluble in the starting components (a), (b) and (c), and contains no bonded olefinically unsaturated groups in the molecule, (dii), and at least one relatively high-molecular-weight compound containing at least two reactive hydrogen atoms (b), or a mixture of (b) and a low-molecular-weight chain extender and/or crosslinking agent (c).
Claim 6
Dependent Claim
156 words
A blowing agent-containing emulsion which comprises from 1 to 40 parts by weight, based on 100 parts by weight of (b) or (b) and (c), of one or more vinylfluoroalkanes of the formula CH 2 ═C n F 2n+1 in which n is an integer from 1 to 6, (di), from 0 to 5 parts by weight, based on 100 parts by weight of (b) or (b) and (c), of water, (dii), from 0 to 36 parts by weight, based on 100 parts by weight of (b) or (b) and (c), of at least one low-boiling, fluorinated or perfluorinated organic compound which is only sparingly soluble or insoluble in the starting components (a), (b) and (c), and contains no bonded olefinically unsaturated groups in the molecule, (dii), and at least one relatively high-molecular-weight compound containing at least two reactive hydrogen atoms (b), or a mixture of (b) and a low-molecular-weight chain extender and/or crosslinking agent (c).
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-04-26 | 1996-10-26 | 1997-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-04-26 | 2000-10-26 | 2001-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-04-26 | 2004-10-26 | 2005-04-27 | $7700.00 | Window Closed / Lapsed |