US3726952A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of molding intergral skin polyurethane foams having mold release properties
Assignee: Bayer AG
•
Filing: 1970-10-21
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Granted: 1973-04-10
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Expires: 1990-10-21
Abstract
Abstract A process is disclosed which eliminates the necessity of applying a mold release agent to the mold when producing integral skinned polyurethane foam moldings in closed molds. This is accomplished by incorporating in the foamable reaction mixture an additive, which imparts mold release properties, said additive containing at least 25 aliphatic carbon atoms and being the salt of an aliphatic carboxylic acid and either a primary amine or an amine which contains either amide or ester groups.
Inventors
- 👤 H Boden
- 👤 Bonin W Von
- 👤 H Kleimann
- 👤 H Mergard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:43
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0014; C08J9/0028; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/32; C08G18/3225; C08G18/3253; C08G18/3259; C08G18/3262; C08J2375/00; C08J2375/04; Y; Y10; Y10S; Y10S264/00; Y10S264/14
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
17 words
The process of claim 1 wherein the aliphatic carboxylic acid contains at least 12 aliphatic carbon atoms.
Claim 2
Dependent Claim
25 words
The process of claim 1 wherein the primary amine or the amine which contains amide or ester groups contains at least 12 aliphatic carbon atoms.
Claim 3
Dependent Claim
13 words
The process of claim 1 wherein the aliphatic carboxylic acid is oleic acid.
Claim 4
Dependent Claim
10 words
The process of claim 1 wherein the amine is 9-aminoheptadecane.
Claim 5
Dependent Claim
18 words
The process of claim 1 wherein the compound containing at least 25 aliphatic carbon atoms is 9-amino-heptadecane oleate.
Claim 6
Dependent Claim
21 words
The process of claim 1 wherein the amide group containing amine is the reaction product of N-dimethylamino propylamine and oleic acid.
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CA651638A
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CA587370A
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CA732648A
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US2921915A
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GB794051A
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US2932621A
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GB852138A
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GB879167A
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GB967443A
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US3222303A
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FR1367045A
Cited
US3437608A
Cited
GB1160042A
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US3586649A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-09 | 1976-10-09 | 1977-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-09 | 1980-10-09 | 1981-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-09 | 1984-10-09 | 1985-04-10 | $7700.00 | Window Closed / Lapsed |