US4247413A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phenolic foam and surfactant useful therein
Assignee: Celotex Corp
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Filing: 1979-12-03
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Granted: 1981-01-27
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Expires: 1999-12-03
Abstract
Abstract A closed cell phenolic-resin foam material comprising phenolic-resin foam forming reactants, a blowing agent, and a surfactant which is the capped reaction product of an alkoxylated amine and a copolymerizable mixture of dialkyl maleate with N-vinyl-2-pyrrolidone or N-vinyl caprolactam.
Inventors
- 👤 John H. Beale
- 👤 Ernest K. Moss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:36
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0061; C08J2361/00; C08J2361/04; C08J2361/06; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/07; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249976
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
98 words
A surfactant which is the reaction product of: I. an alkoxylated amine of the formula ##STR3## wherein: (a) R 5 is an alkoxylated chain of the formula ##STR4## (b) n is an integer from 2 to 10 inclusive, (c) the ratio p:q is 15:85 to 85:15 with II. a copolymerizable mixture of dialkyl maleate and a member selected from the group consisting of N-vinyl-2-pyrrolidone and N-vinyl caprolactam, wherein the molar ratio of dibutyl maleate to said N-vinyl member is 1:1, and III. a capping agent for the terminal hydroxyl groups which eliminates the active hydrogen of said groups.
Claim 2
Dependent Claim
98 words
A surfactant which is the reaction product of: I. an alkoxylated amine of the formula ##STR3## wherein: (a) R 5 is an alkoxylated chain of the formula ##STR4## (b) n is an integer from 2 to 10 inclusive, (c) the ratio p:q is 15:85 to 85:15 with II. a copolymerizable mixture of dialkyl maleate and a member selected from the group consisting of N-vinyl-2-pyrrolidone and N-vinyl caprolactam, wherein the molar ratio of dibutyl maleate to said N-vinyl member is 1:1, and III. a capping agent for the terminal hydroxyl groups which eliminates the active hydrogen of said groups.
Claim 3
Dependent Claim
108 words
A surfactant which is the reaction product of: I. an alkoxylated amine of the formula ##STR5## wherein: (a) R 5 is an alkoxylated chain of the formula ##STR6## (b) n is an integer from 2 to 10 inclusive, (c) the ratio p:q is 20:80 to 60:40, (d) the molecular weight of the alkoxylated amine is 1800 to 2800, II. a copolymerizable mixture of dibutyl maleate and N-vinyl-2-pyrrolidone wherein the copolymerizable mixture comprises 20 weight percent based on the weight of the reaction product, and the molar ratio of dibutyl maleate to N-vinyl-2-pyrrolidone is 1:1, and III. acetic anhydride, wherein the surfactant has a hydroxyl value less than 10.
Claim 4
Dependent Claim
108 words
A surfactant which is the reaction product of: I. an alkoxylated amine of the formula ##STR5## wherein: (a) R 5 is an alkoxylated chain of the formula ##STR6## (b) n is an integer from 2 to 10 inclusive, (c) the ratio p:q is 20:80 to 60:40, (d) the molecular weight of the alkoxylated amine is 1800 to 2800, II. a copolymerizable mixture of dibutyl maleate and N-vinyl-2-pyrrolidone wherein the copolymerizable mixture comprises 20 weight percent based on the weight of the reaction product, and the molar ratio of dibutyl maleate to N-vinyl-2-pyrrolidone is 1:1, and III. acetic anhydride, wherein the surfactant has a hydroxyl value less than 10.
Claim 5
Dependent Claim
17 words
The surfactant of claim 1 wherein the alkyl of the maleate has 1 to 5 carbon atoms.
Claim 6
Dependent Claim
18 words
The surfactant of claim 1 wherein the molecular weight of the alkoxylated amine is from 1800 to 2800.
Claim 7
Dependent Claim
13 words
The surfactant of claim 1 wherein the ratio p:q is 20:80 to 60:40.
Claim 8
Dependent Claim
25 words
The surfactant of claim 1 wherein the ratio p:q is 20:80 to 60:40, and the alkyl of the maleate has 1 to 5 carbon atoms.
Claim 9
Dependent Claim
18 words
The surfactant of claim 6 wherein the molecular weight of the alkoxylated amine is from 1800 to 2800.
Claim 10
Dependent Claim
21 words
The surfactant of claims 3, 4, 5, 6 or 7 wherein the surfactant has a hydroxyl value of less than 50.
Claim 11
Dependent Claim
16 words
The surfactant of claim 8 wherein the surfactant has a hydroxyl value of less than 10.
Claim 12
Dependent Claim
16 words
The surfactant of claim 1 wherein the component II copolymerizable mixture comprises dibutyl maleate and N-vinyl-2-pyrrolidone.
Claim 13
Dependent Claim
14 words
The surfactant of claim 10 wherein the ratio of p:q is 20:80 to 60:40.
Claim 14
Dependent Claim
18 words
The surfactant of claim 11 wherein the molecular weight of the alkoxylated amine is from 1800 to 2800.
Claim 15
Dependent Claim
36 words
The surfactant of claims 10, 11, or 12 wherein the component II copolymerizable mixture comprises between 5 and 40 weight percent of the reaction mixture, and the molar ratio of dibutyl maleate and N-vinyl-2-pyrrolidone is 1:1.
Claim 16
Dependent Claim
19 words
The surfactant of claim 13 wherein the component II copolymerizable mixture comprises 20 weight percent of the reaction mixture.
Claim 17
Dependent Claim
16 words
The surfactant of claim 13 wherein the surfactant has a hydroxyl value of less than 50.
Claim 18
Dependent Claim
19 words
The surfactant of claim 15 wherein the component II copolymerizable mixture comprises 20 weight percent of the reaction mixture.
Claim 19
Dependent Claim
16 words
The surfactant of claim 13 wherein the surfactant has a hydroxyl value of less than 10.
Claim 20
Dependent Claim
19 words
The surfactant of claim 17 wherein the component II copolymerizable mixture comprises 20 weight percent of the reaction mixture.
References Cited (Backward Citations)
US3876620A
Cited
US4036793A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-01-27 | 1984-07-28 | 1985-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-01-27 | 1988-07-28 | 1989-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-01-27 | 1992-07-28 | 1993-01-27 | $7700.00 | Window Closed / Lapsed |