US3869413A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible polyurethane foams
Assignee: Dow Chemical Co
•
Filing: 1974-03-04
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Granted: 1975-03-04
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Expires: 1994-03-04
Abstract
Abstract The physical properties of flexible polyurethane foams can be improved by the addition to the polyol of from 2-25 weight percent of a solid polymer or copolymer of an ethylenically unsaturated monomer free from groups reactive with NCO groups.
Inventors
- 👤 Larry Thomas Blankenship
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:16
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08J; C08J9/00; C08J9/0061; C08J2375/00; C08J2375/04; C08J2375/08; C08J2457/00; Y; Y10; Y10S; Y10S521/00; Y10S521/904
Claims Analysis
Total Claims: 39
Claim 1
Independent Claim
167 words
A POLYOL COMPOSITION CONSISTING ESSENTIALLY OF A. FROM ABOUT 50 TO ABOUT 98 PARTS BY WEIGHT OF A POLYETHER POLYOL OR MIXTURE OF SUCH POLYOLS HAVING FROM 2 TO 3 HYDROXYL GROUPS PER MOLECULE AND AN OH EQUIVALENT WEIGHT OF FROM ABOUT 900 TO ABOUT 2300 AND B. FROM ABOUT 50 TO ABOUT 2 PARTS BY WEIGHT OF A SOLID POLYMER OF ONE OR MORE ETHYLENICALLY UNSATURATED MONOMERS FREE FROM GROUPS REACTIVE WITH NCO OR OH GROUPS UNDER URETHANE-FORMING CONDITIONS, SAID SOLID POLYMER HAVING A MOLECULAR WEIGHT OF AT LEAST ABOUT 5,000, SAID POLYOL COMPOSITION HAVING BEEN PREPARED BY ADDING COMPONENT (B) IN THE FORM OF A LATEX HAVING AN AVERAGE PARTICLE SIZE OF FROM ABOUT 1000 A TO ABOUT 7000 A TO COMPONENT (A) AND SUBSEQUENTLY REMOVING WATER THEREFROM TO THE EXTENT THAT THE RESULTING MIXTURE CONTAINS FROM ZERO TO THAT QUANTITY OF WATER DESIRED TO BE EMPLOYED IN THE FOAMING REACTION BY THE FORMATION OF CO2 THROUGH REACTION OF SUCH WATER WITH A POLYISOCYANATE, AND
Claim 2
Dependent Claim
167 words
A POLYOL COMPOSITION CONSISTING ESSENTIALLY OF A. FROM ABOUT 50 TO ABOUT 98 PARTS BY WEIGHT OF A POLYETHER POLYOL OR MIXTURE OF SUCH POLYOLS HAVING FROM 2 TO 3 HYDROXYL GROUPS PER MOLECULE AND AN OH EQUIVALENT WEIGHT OF FROM ABOUT 900 TO ABOUT 2300 AND B. FROM ABOUT 50 TO ABOUT 2 PARTS BY WEIGHT OF A SOLID POLYMER OF ONE OR MORE ETHYLENICALLY UNSATURATED MONOMERS FREE FROM GROUPS REACTIVE WITH NCO OR OH GROUPS UNDER URETHANE-FORMING CONDITIONS, SAID SOLID POLYMER HAVING A MOLECULAR WEIGHT OF AT LEAST ABOUT 5,000, SAID POLYOL COMPOSITION HAVING BEEN PREPARED BY ADDING COMPONENT (B) IN THE FORM OF A LATEX HAVING AN AVERAGE PARTICLE SIZE OF FROM ABOUT 1000 A TO ABOUT 7000 A TO COMPONENT (A) AND SUBSEQUENTLY REMOVING WATER THEREFROM TO THE EXTENT THAT THE RESULTING MIXTURE CONTAINS FROM ZERO TO THAT QUANTITY OF WATER DESIRED TO BE EMPLOYED IN THE FOAMING REACTION BY THE FORMATION OF CO2 THROUGH REACTION OF SUCH WATER WITH A POLYISOCYANATE, AND
Claim 3
Dependent Claim
12 words
FLEXIBLE POLYURETHANE FOAMS PREPARED BY SUBJECTING TO FOAMING CONDITIONS A COMPOSITION COMPRISING
Claim 4
Dependent Claim
12 words
FLEXIBLE POLYURETHANE FOAMS PREPARED BY SUBJECTING TO FOAMING CONDITIONS A COMPOSITION COMPRISING
Claim 5
Dependent Claim
17 words
The foam of claim 1, wherein the NCO:active hydrogen ratio is from about 0.95:1 to about 1.2:1.
Claim 6
Dependent Claim
25 words
an organic polyisocyanate; wherein Components 1 and 2 are employed in quantities such that the NCO:active hydrogen ratio is from about 0.80:1 to about 1.5:
Claim 7
Dependent Claim
25 words
an organic polyisocyanate; wherein Components 1 and 2 are employed in quantities such that the NCO:active hydrogen ratio is from about 0.80:1 to about 1.5:
Claim 8
Dependent Claim
25 words
AN ORGANIC POLYISOCYANATE, WHEREIN COMPONENTS 1 AND 2 ARE EMPLOYED IN QUANTITIES SUCH THAT THE NCO:ACTIVE HYDROGEN RATIO IS FROM ABOUT 0.80:1 TO ABOUT 1.5:1.
Claim 9
Dependent Claim
25 words
AN ORGANIC POLYISOCYANATE, WHEREIN COMPONENTS 1 AND 2 ARE EMPLOYED IN QUANTITIES SUCH THAT THE NCO:ACTIVE HYDROGEN RATIO IS FROM ABOUT 0.80:1 TO ABOUT 1.5:1.
Claim 10
Dependent Claim
44 words
an organic polyisocyanate consisting essentially of A. from about 50% to 100% by weight of 2,4-toluenediisocyanate, 2,6toluenediisocyanate, NCO-containing prepolymers thereof, or mixtures thereof, and B. from 0 to about 50% by weight of an organic polyisocyanate having an average functionality of at least 2,
Claim 11
Dependent Claim
44 words
an organic polyisocyanate consisting essentially of A. from about 50% to 100% by weight of 2,4-toluenediisocyanate, 2,6toluenediisocyanate, NCO-containing prepolymers thereof, or mixtures thereof, and B. from 0 to about 50% by weight of an organic polyisocyanate having an average functionality of at least 2,
Claim 12
Dependent Claim
19 words
from about 1.5 to about 5 parts by weight of water per 100 parts by weight of component 1,
Claim 13
Dependent Claim
19 words
from about 1.5 to about 5 parts by weight of water per 100 parts by weight of component 1,
Claim 14
Dependent Claim
18 words
The foam of claim 2 wherein Component 1B is a copolymer containing styrene as one of the monomers.
Claim 15
Dependent Claim
18 words
The foam of claim 2 wherein Component 1B is a copolymer containing acrylonitrile as one of the monomers.
Claim 16
Dependent Claim
23 words
from 0 to about 20 parts by weight of a low boiling auxiliary blowing agent per 100 parts by weight of component 1,
Claim 17
Dependent Claim
23 words
from 0 to about 20 parts by weight of a low boiling auxiliary blowing agent per 100 parts by weight of component 1,
Claim 18
Dependent Claim
22 words
from about 0.5 to about 4 parts by weight per 100 parts by weight of Component 1 of a tertiary amine catalyst,
Claim 19
Dependent Claim
22 words
from about 0.5 to about 4 parts by weight per 100 parts by weight of Component 1 of a tertiary amine catalyst,
Claim 20
Dependent Claim
15 words
The foam of claim 2 wherein Component 1B is a copolymer of styrene and acrylonitrile.
Claim 21
Dependent Claim
17 words
The foam of claim 5 wherein said copolymer contains at least about 45% by weight of styrene.
Claim 22
Dependent Claim
50 words
from about 0.005 to about 1.5 parts by weight per 100 parts by weight of Component 1 of a silicone oil cell control agent, and wherein Components 1 and 2 are present in quantities so as to provide as NCO:active hydrogen equivalent ratio of from about 0.8:1.0 to about 1.3:1.0.
Claim 23
Dependent Claim
50 words
from about 0.005 to about 1.5 parts by weight per 100 parts by weight of Component 1 of a silicone oil cell control agent, and wherein Components 1 and 2 are present in quantities so as to provide as NCO:active hydrogen equivalent ratio of from about 0.8:1.0 to about 1.3:1.0.
Claim 24
Dependent Claim
23 words
The foam of claim 2 wherein said polymer is a copolymer of styrene and a 1-2 carbon atom alkyl ester of acrylic acid.
Claim 25
Dependent Claim
11 words
The foam of claim 7 wherein said copolymer contains 97% styrene.
Claim 26
Dependent Claim
23 words
The foam of claim 2 wherein said polymer is a copolymer of styrene and a 1-8 carbon atom alkyl ester of methacrylic acid.
Claim 27
Dependent Claim
11 words
The foam of claim 9 wherein said copolymer contains 97% styrene.
Claim 28
Dependent Claim
31 words
The polyurethane foam of claim 1 having a resiliency of at least about 50% and a modulus of at least about 2.3 resulting from subjecting to foaming conditions a composition comprising
Claim 29
Dependent Claim
104 words
The foam of claim 11, wherein Component 1A has an average equivalent weight of from about 1000 to about 1700. Component 1B has a molecular weight of at least about 15,000, Component 1A is present in quantities of from about 50 to about 98 parts by weight; Component 1B is present in quantities of from about 50 to about 2 parts by weight; Component 2A is present in quantities of from aboUt 75 to about 100% by weight; Component 2B is present in quantities of from about 0 to 25% by weight; and the NCO:active hydrogen ratio is from about 0.95:1 to about 1.2:1.
Claim 30
Dependent Claim
15 words
The foam of claim 12 wherein Component 1B is a copolymer of styrene and acrylonitrile.
Claim 31
Dependent Claim
12 words
The foam of claim 13 wherein said copolymer contains about 45-97% styrene.
Claim 32
Dependent Claim
11 words
The foam of claim 13 wherein said copolymer contains 45-60% styrene.
Claim 33
Dependent Claim
12 words
The foam of claim 13 wherein said copolymer contains about 85-97% styrene.
Claim 34
Dependent Claim
16 words
The foam of claim 11 wherein said polymer is a copolymer of styrene and methyl acrylate.
Claim 35
Dependent Claim
12 words
The foam of claim 17 wherein said copolymer contains about 97% styrene.
Claim 36
Dependent Claim
11 words
The foam of claim 13 wherein said copolymer contains 85% styrene.
Claim 37
Dependent Claim
11 words
The foam of claim 13 wherein said copolymer contains 73% styrene.
Claim 38
Dependent Claim
11 words
The foam of claim 13 wherein said copolymer contains 55% styrene.
Claim 39
Dependent Claim
11 words
The foam of claim 13 wherein said copolymer contains 45% styrene.
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) | 1978-03-03 | 1978-09-02 | 1979-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-03 | 1982-09-02 | 1983-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-03 | 1986-09-02 | 1987-03-04 | $7700.00 | Window Closed / Lapsed |