US4486557A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organic polyisocyanate-liquid aromatic epoxide-lignin adhesive binder compositions
Assignee: Lyondell Chemical Technology LP
•
Filing: 1983-11-25
•
Granted: 1984-12-04
•
Expires: 2003-11-25
Abstract
Abstract An adhesive binder composition is provided for the preparation of lignocellulosic composite molded articles such as flake or particle board, made from moldable compositions which comprises an organic di- or polyisocyanate a liquid aromatic epoxide and lignin, for application to the lignocellulosic material prior to the molding process to form the composite product.
Inventors
- 👤 James M. Gaul
- 👤 Tinh Nguyen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:22
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/58; C08G18/003; C08L; C08L97/00; C08L97/02
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
81 words
An adhesive binder composition for the preparation of compression moldable lignocellulosic articles which comprises from about 20 to 95 percent by weight of an organic di- or polyisocyanate, from about 5 to 80 percent by weight of a liquid epoxide selected from liquid aromatic epoxides having one α epoxide group and aromatic or aliphatic based multifunctional epoxides having 2 or more α epoxide groups and between about 1.0 and 60 weight percent lignin based on the total composition as a diluent.
Claim 2
Dependent Claim
81 words
An adhesive binder composition for the preparation of compression moldable lignocellulosic articles which comprises from about 20 to 95 percent by weight of an organic di- or polyisocyanate, from about 5 to 80 percent by weight of a liquid epoxide selected from liquid aromatic epoxides having one α epoxide group and aromatic or aliphatic based multifunctional epoxides having 2 or more α epoxide groups and between about 1.0 and 60 weight percent lignin based on the total composition as a diluent.
Claim 3
Dependent Claim
18 words
The adhesive composition of claim 1 wherein between 10 and 35 weight percent lignin is added as diluent.
Claim 4
Dependent Claim
18 words
The adhesive composition of claim 1 wherein the aromatic epoxide having one α epoxide group is styrene oxide.
Claim 5
Dependent Claim
17 words
The adhesive composition of claim 1 wherein the multifunctional epoxide is a diglycidyl ether of Bisphenol A.
Claim 6
Dependent Claim
13 words
The adhesive composition of claim 1 wherein the multifunctional epoxide is 3,4-epoxycyclohexylmethyl-3,4-epoxycyclohexane carboxylate.
Claim 7
Dependent Claim
13 words
The adhesive composition of claim 1 wherein the multifunctional epoxide is epoxidized p-aminophenol.
Claim 8
Dependent Claim
15 words
The adhesive composition of claim 1 wherein the di- or polyisocyanate is a diphenylmethane diisocyanate.
Claim 9
Dependent Claim
24 words
The adhesive composition of claim 1 wherein the di- or polyisocyanate is a mixture of diphenylmethane diisocyanate and the higher functionality polymethylene polyphenyl isocyanate.
Claim 10
Dependent Claim
40 words
The adhesive composition of claim 1 wherein from 50 to 75 weight percent organic di- or polyisocyanate, from 50 to 25 weight percent liquid epoxide and from 10 to 20 weight percent lignin based on the total composition is employed.
Claim 11
Dependent Claim
90 words
A compression moldable lignocellulosic composition comprising lignocellulosic particles and from about 1.5 to 12 percent by weight based on oven dried particles of an adhesive binder composition which comprises from about 20 to 95 weight percent organic di- or polyisocyanate, from about 5 to 80 weight percent liquid epoxide selected from liquid monomeric epoxides having one α epoxide group and aromatic or aliphatic based multifunctional epoxides having 2 or more α epoxide groups and between about 1.0 and 60 weight percent lignin based on the total composition as a diluent.
Claim 12
Dependent Claim
90 words
A compression moldable lignocellulosic composition comprising lignocellulosic particles and from about 1.5 to 12 percent by weight based on oven dried particles of an adhesive binder composition which comprises from about 20 to 95 weight percent organic di- or polyisocyanate, from about 5 to 80 weight percent liquid epoxide selected from liquid monomeric epoxides having one α epoxide group and aromatic or aliphatic based multifunctional epoxides having 2 or more α epoxide groups and between about 1.0 and 60 weight percent lignin based on the total composition as a diluent.
Claim 13
Dependent Claim
20 words
The compression moldable composition of claim 10 wherein 2.5 to 6.5 weight percent adhesive binder is employed in the composition.
Claim 14
Dependent Claim
17 words
The compression moldable composition of claim 10 wherein the lignin is between 10 and 35 weight percent.
Claim 15
Dependent Claim
19 words
The compression moldable composition of claim 10 wherein the aromatic epoxide having one α epoxide group is styrene oxide.
Claim 16
Dependent Claim
18 words
The compression moldable composition of claim 10 wherein the multifunctional epoxide is a diglycidyl ether of Bisphenol A.
Claim 17
Dependent Claim
14 words
The compression moldable composition of claim 10 wherein the multifunctional epoxide is 3,4-epoxycyclohexylmethyl-3,4-epoxycyclohexane carboxylate.
Claim 18
Dependent Claim
14 words
The compression moldable composition of claim 10 wherein the multifunctional epoxide is epoxidized p-aminophenol.
Claim 19
Dependent Claim
33 words
The compression moldable composition of claim 10 wherein from 50 to 75 weight percent organic di- or polyisocyanate and from 50 to 25 weight percent liquid epoxide is employed in the adhesive binder.
Claim 20
Dependent Claim
16 words
The compression moldable composition of claim 10 wherein the di- or polyisocyanate is a diphenylmethane diisocyanate.
Claim 21
Dependent Claim
25 words
The compression moldable composition of claim 10 wherein the di- or polyisocyanate is a mixture of diphenylmethane diisocyanate and the higher functionality polymethylene polphenyl isocyanates.
Claim 22
Dependent Claim
98 words
A composition board product comprising a compression molded lignocellulosic composition comprising lignocellulosic particles and from about 1.5 to 12 weight percent based on oven dried lignocellulosic particles employed of an adhesive binder composition, said binder composition being a mixture of from about 20 to 95 weight percent organic di- or polyisocyanate, from 5 to 80 weight percent liquid epoxide selected from liquid aromatic epoxides having one α epoxide group and aromatic or aliphatic based multifunctional epoxides having 2 or more epoxide groups and between about 1.0 and 60 weight percent lignin based on the total composition as diluent.
Claim 23
Dependent Claim
98 words
A composition board product comprising a compression molded lignocellulosic composition comprising lignocellulosic particles and from about 1.5 to 12 weight percent based on oven dried lignocellulosic particles employed of an adhesive binder composition, said binder composition being a mixture of from about 20 to 95 weight percent organic di- or polyisocyanate, from 5 to 80 weight percent liquid epoxide selected from liquid aromatic epoxides having one α epoxide group and aromatic or aliphatic based multifunctional epoxides having 2 or more epoxide groups and between about 1.0 and 60 weight percent lignin based on the total composition as diluent.
Claim 24
Dependent Claim
16 words
The board product of claim 20 wherein the compression molded lignocellulosic composition is wood particle board.
Claim 25
Independent Claim
184 words
A method for the preparation of lignocellulosic composite articles comprising the steps of (a) mixing together lignocellulosic particles and from about 1.5 to 12 weight percent based on oven dried lignocellulosic particles of an adhesive binder composition comprising from 20 to 95 weight percent organic di- and polyisocyanate, from about 5 to 80 weight percent liquid epoxide selected from liquid aromatic epoxides having one α epoxide group and aromatic or aliphatic based multifunctional epoxides having 2 or more epoxide groups and between about 1.0 and 60 weight percent lignin based on the total composition as diluent to form a moldable composition; (b) introducing said moldable composition onto a metal mold, caul plate or platen which has been sprayed or coated with a release agent; (c) compression shaping said composition at temperatures of between about 140° C. to 220° C. at pressures of from about 100 to 600 psi for a period of from about 1 to 10 minutes to form a composite article of desired shape and/or thickness; and (d) thereafter releasing said lignocellulosic composite article from said metal mold, caul plate or platen.
Claim 26
Independent Claim
184 words
A method for the preparation of lignocellulosic composite articles comprising the steps of (a) mixing together lignocellulosic particles and from about 1.5 to 12 weight percent based on oven dried lignocellulosic particles of an adhesive binder composition comprising from 20 to 95 weight percent organic di- and polyisocyanate, from about 5 to 80 weight percent liquid epoxide selected from liquid aromatic epoxides having one α epoxide group and aromatic or aliphatic based multifunctional epoxides having 2 or more epoxide groups and between about 1.0 and 60 weight percent lignin based on the total composition as diluent to form a moldable composition; (b) introducing said moldable composition onto a metal mold, caul plate or platen which has been sprayed or coated with a release agent; (c) compression shaping said composition at temperatures of between about 140° C. to 220° C. at pressures of from about 100 to 600 psi for a period of from about 1 to 10 minutes to form a composite article of desired shape and/or thickness; and (d) thereafter releasing said lignocellulosic composite article from said metal mold, caul plate or platen.
Claim 27
Dependent Claim
72 words
A method according to claim 22 wherein 2.5 to 6.5 weight percent adhesive binder composition is employed and comprises from 50 to 75 weight percent organic di- or polyisocyanates, from 50 to 25 weight percent liquid epoxide and from 10 to 35 weight percent lignin, the release agent is a metallic soap, the compression temperature is between 160° C. to 190° C. and the time period is from 3 to 5 minutes.
Claim 28
Dependent Claim
30 words
A method according to claim 22 wherein the binder composition is a mixture of diphenylmethane diisocyanate and the higher functionality polymethylene polyphenyl isocyanates, diglycidyl ether of Bisphenol A and lignin.
Claim 29
Dependent Claim
16 words
A method according to claim 22 wherein the compression molded lignocellulosic composition is wood particle board.
References Cited (Backward Citations)
US3702839A
Cited
US4070416A
Cited
US3984376A
Cited
US4066628A
Cited
US4361662A
Cited
US4359507A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-12-04 | 1988-06-04 | 1988-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-12-04 | 1992-06-04 | 1992-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-12-04 | 1996-06-04 | 1996-12-04 | $7700.00 | Window Closed / Lapsed |