US4751253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing dimensionally stable, flexible urethane foam and the foam produced thereby
Assignee: Individual
•
Filing: 1986-10-06
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Granted: 1988-06-14
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Expires: 2006-10-06
Abstract
Abstract An open celled, dimensionally stable, flexible urethane foam and method of preparing such foam, which method comprises adding a cell opening dimensionally stabilizing amount of an additive to a foamable urethane composition, and thereafter foaming the composition containing such additive to provide a dimensionally stable, flexible urethane foam product. The additive mixture employed comprises an ester reaction product of a long chain acid with polyethylene or polypropylene glycols and/or contains free acid to provide for a desired acid value. The dimensionally stable, flexible foam product produced is particularly useful in the automotive industry as a flexible molded-type foam for use as cushions and seats.
Inventors
- 👤 Eugene J. Tylenda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:45
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0061; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/2805; C08G18/281; C08J9/0014; C08J9/0023; C08K; C08K5/00; C08K5/04; C08K5/09; C08K5/10; C08K5/101; C08K5/103; C08J2375/00; C08J2375/04; C08J2471/00; Y; Y10; Y10S; Y10S521/00; Y10S521/904
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
116 words
A method of preparing a molded, high resilience, urethane foam product of improved dimensional stability, which method comprises: (a) adding to a foamable urethane composition a cell opening amount of a cell opening additive, which additive is selected from the group consisting of: (i) a long chain fatty acid; (ii) a polyethylene or polypropylene glycol-long chain fatty acid ester; and (iii) a mixture of "(i)" and "(ii)"; (b) reacting the foamable urethane composition in a closed mold to provide a high resiliency, molded urethane foam product; and (c) recovering a molded foam product of improved dimensional stability and having a greater amount of open cells than the molded foam product produced without the cell opening additive.
Claim 2
Independent Claim
116 words
A method of preparing a molded, high resilience, urethane foam product of improved dimensional stability, which method comprises: (a) adding to a foamable urethane composition a cell opening amount of a cell opening additive, which additive is selected from the group consisting of: (i) a long chain fatty acid; (ii) a polyethylene or polypropylene glycol-long chain fatty acid ester; and (iii) a mixture of "(i)" and "(ii)"; (b) reacting the foamable urethane composition in a closed mold to provide a high resiliency, molded urethane foam product; and (c) recovering a molded foam product of improved dimensional stability and having a greater amount of open cells than the molded foam product produced without the cell opening additive.
Claim 3
Dependent Claim
58 words
The method of claim 1 which includes preparing a high resilient, molded urethane product by: (a) pouring the foamable urethane composition into an open mold; (b) closing the mold and reacting the foamable urethane composition in the closed mold; (c) opening the mold after preparation of the foam product; and (d) removing the foam product from the mold.
Claim 4
Dependent Claim
30 words
The method of claim 1 wherein the said ester is present in an amount of from about 0.1 to 5 parts per 100 parts of polyol in the urethane composition.
Claim 5
Dependent Claim
30 words
The method of claim 1 wherein the fatty acid is present in an amount of from about 0.15 to 0.23 parts per 100 parts of polyol in the urethane composition.
Claim 6
Dependent Claim
17 words
The method of claim 1 wherein the fatty acid is a C 14 -C 22 fatty acid.
Claim 7
Dependent Claim
47 words
The method of claim 1 wherein the fatty acid is selected from the group consisting of: (a) oleic acid; (b) stearic acid; (c) stearolic acid; (d) linolenic acid; (e) linoleic acid; (f) palmitic acid; (g) palmitoleic acid; (h) myristic acid; (i) myristoleic acid; and (j) mixtures thereof.
Claim 8
Dependent Claim
24 words
The method of claim 1 wherein the ester comprises a reaction product of a polyethylene glycol and a C 14 -C 22 fatty acid.
Claim 9
Dependent Claim
18 words
The method of claim 7 wherein the reaction product has an acid value of about 4.4 to 45.
Claim 10
Dependent Claim
20 words
The method of claim 1 wherein the ester comprises a polyethylene glycol-mono- or di-C 18 fatty acid, and mixtures thereof.
Claim 11
Dependent Claim
15 words
The method of claim 1 wherein the additive comprises a polyethylene glycol dioleate or linoleate.
Claim 12
Dependent Claim
23 words
The method of claim 1 wherein the mixture comprises a C 18 fatty acid and a polyethylene glycol C 18 fatty acid ester.
Claim 13
Dependent Claim
33 words
The method of claim 1 wherein the fatty acid comprises linoleic acid or oleic acid in an amount of 0.15 to 0.23 parts per 100 parts of the polyol of the urethane composition.
Claim 14
Dependent Claim
21 words
The method of claim 1 which includes mechanically treating the close molded foam product to increase the number of open cells.
Claim 15
Dependent Claim
20 words
The method of claim 13 which includes crushing the close molded foam product to increase the number of open cells.
Claim 16
Dependent Claim
12 words
The close molded foam product produced by the method of claim 1.
Claim 17
Independent Claim
124 words
A method of preparing a molded, high resiliency, urethane foam product of improved dimensional stability, which method comprises: (a) adding to a foamable urethane composition a cell opening amount of a cell opening additive, which additive is selected from the group consisting of: (i) a C 18 fatty acid; (ii) a polyethylene glycol-C 18 fatty acid ester; and (iii) a mixture of "(i)" and "(ii)"; (b) introducing the composition containing the additive into an open mold; (c) closing the mold to permit the preparation of the foam product; (d) opening the mold; and (e) recovering a high resiliency molded foam product of improved dimensional stability and having a greater amount of open cells than the molded foam product produced without the cell opening additive.
Claim 18
Independent Claim
124 words
A method of preparing a molded, high resiliency, urethane foam product of improved dimensional stability, which method comprises: (a) adding to a foamable urethane composition a cell opening amount of a cell opening additive, which additive is selected from the group consisting of: (i) a C 18 fatty acid; (ii) a polyethylene glycol-C 18 fatty acid ester; and (iii) a mixture of "(i)" and "(ii)"; (b) introducing the composition containing the additive into an open mold; (c) closing the mold to permit the preparation of the foam product; (d) opening the mold; and (e) recovering a high resiliency molded foam product of improved dimensional stability and having a greater amount of open cells than the molded foam product produced without the cell opening additive.
Claim 19
Dependent Claim
30 words
The method of claim 16 wherein the C 18 fatty acid is present in an amount of 0.15 to 0.23 per 100 parts of the polyol of the urethane composition.
Claim 20
Dependent Claim
11 words
The molded foam product produced by the method of claim 16.
Claim 21
Dependent Claim
16 words
The method of claim 1 wherein the foamable urethane composition contains a silicone cell promoter additive.
Claim 22
Dependent Claim
10 words
The molded foam provided by the method of claim 13.
References Cited (Backward Citations)
US3579471A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-06-14 | 1991-12-14 | 1992-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-06-14 | 1995-12-14 | 1996-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-06-14 | 1999-12-14 | 2000-06-14 | $7700.00 | Window Closed / Lapsed |