US3983084A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Art of manufacturing compression molded particle board with nitrogenous modified amylaceous binder
Assignee: Krause Milling Co
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Filing: 1974-10-18
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Granted: 1976-09-28
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Expires: 1994-10-18
Abstract
Abstract A gelatinized amylaceous material, modified with a nitrogen containing compound such as urea, is combined with a synthetic resin, and the mixture is used as a binder which is particularly useful in producing compression molded particle board.
Inventors
- 👤 Richard J. Alexander
- 👤 Robert K. Krueger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:34
CPC Classifications
C; C08; C08L; C08L97/00; C08L97/02; C09; C09J; C09J103/00; C08L2666/00; C08L2666/02
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
207 words
A method of manufacturing particle board comprising the following steps: a. Preparing an amylaceous binder by combining a nitrogen compound with a gelatinized cereal grain or an amylaceous fraction thereof using water in an amount less than 20 percent of the total mix, and heating the mixture to bring the temperature to between 75° C and 180° C while the gelatinized material and nitrogen compound are both present, the nitrogen compound being in the amount of 3-20 percent based on the weight of the cereal grain and being of the family containing the chemical grouping >N(R.sub.1 R.sub.2 N)C:X where X is O, S or NH and where R 1 is H or CH 3 and where R 2 is H or CH 3 ; b. intimately mixing a resin selected from the group of urea-formaldehyde, melamine-formaldehyde and phenol-formaldehyde resins or mixture thereof with the amylaceous binder to produce a resin-binder mixture which is composed of from 5-50 percent of the amylaceous binder and of 50-95 percent of the resin; c. blending a quantity of the resin-binder mixture with wood particles, with said quantity being 5-20 percent of the weight of the wood particles; d. subjecting the blend of resin-binder mixture and wood particles to heat and pressure.
Claim 2
Independent Claim
207 words
A method of manufacturing particle board comprising the following steps: a. Preparing an amylaceous binder by combining a nitrogen compound with a gelatinized cereal grain or an amylaceous fraction thereof using water in an amount less than 20 percent of the total mix, and heating the mixture to bring the temperature to between 75° C and 180° C while the gelatinized material and nitrogen compound are both present, the nitrogen compound being in the amount of 3-20 percent based on the weight of the cereal grain and being of the family containing the chemical grouping >N(R.sub.1 R.sub.2 N)C:X where X is O, S or NH and where R 1 is H or CH 3 and where R 2 is H or CH 3 ; b. intimately mixing a resin selected from the group of urea-formaldehyde, melamine-formaldehyde and phenol-formaldehyde resins or mixture thereof with the amylaceous binder to produce a resin-binder mixture which is composed of from 5-50 percent of the amylaceous binder and of 50-95 percent of the resin; c. blending a quantity of the resin-binder mixture with wood particles, with said quantity being 5-20 percent of the weight of the wood particles; d. subjecting the blend of resin-binder mixture and wood particles to heat and pressure.
Claim 3
Dependent Claim
15 words
A method as set forth in claim 1 in which the nitrogen compound is urea.
Claim 4
Dependent Claim
43 words
A method as set forth in claim 1 in which the nitrogen compound is of the general formula (R 1 R 2 N) 2 C:X where R 1 and R 2 are H or CH 3 , and X is O or S.
Claim 5
Dependent Claim
30 words
A method as set forth in claim 1 in which the nitrogen compound is of the family containing the chemical grouping >N(H.sub.2 N)C:X where X is O, S, or NH.
Claim 6
Dependent Claim
28 words
A method as set forth in claim 1 in which the nitrogen compound is selected from the group comprising the following: urea, guanidine, thiourea, biurea, biuret, and dicyandiamide.
Claim 7
Dependent Claim
37 words
A method as set forth in claim 1 in which the amylaceous material is selected from a group comprising corn flour, corn starch, grain sorghum flour, corn meal, corn grits, milo meal, milo grits, and wheat flour.
Claim 8
Dependent Claim
133 words
As a new composition of matter, a binder comprising an intimate mixture of 50-95 percent of a resin selected from the group of urea-formaldehyde, malamine-formaldehyde and phenol-formaldehyde resins or mixture thereof and 5-50 percent of an amylaceous binder wherein the latter comprises a mixture of a nitrogen compound from the family containing the chemical grouping >N(R.sub.1 R.sub.2 N)C:X where X is O, S or NH and where R 1 is H or CH 3 and where R 2 is H or CH 3 , and a gelatinized cereal grain or an amylaceous fraction thereof with the association of said mixture having been effected by heating to a temperature between 75° C and 180° C, the nitrogen compound being present in the amount of 3-20 percent based upon the weight of the cereal grain.
Claim 9
Dependent Claim
133 words
As a new composition of matter, a binder comprising an intimate mixture of 50-95 percent of a resin selected from the group of urea-formaldehyde, malamine-formaldehyde and phenol-formaldehyde resins or mixture thereof and 5-50 percent of an amylaceous binder wherein the latter comprises a mixture of a nitrogen compound from the family containing the chemical grouping >N(R.sub.1 R.sub.2 N)C:X where X is O, S or NH and where R 1 is H or CH 3 and where R 2 is H or CH 3 , and a gelatinized cereal grain or an amylaceous fraction thereof with the association of said mixture having been effected by heating to a temperature between 75° C and 180° C, the nitrogen compound being present in the amount of 3-20 percent based upon the weight of the cereal grain.
Claim 10
Dependent Claim
177 words
A particle board comprising a blend of wood particles and a resin-binder mixture, with the resin-binder mixture being 5-20 percent of the weight of the wood particles, and said blend having been subjected to a heat of 250°-450° F at pressures of 300-2000 psi for five to twenty minutes, the resin-binder mixture comprising an intimate mixture of 5-50 percent of an amylaceous binder and 50-95 percent of a resin selected from the group of urea-formaldehyde, melamine-formaldehyde and phenol-formaldehyde resins or mixture thereof, the amylaceous binder comprising a mixture of a nitrogen compound from the family containing the chemical grouping >N(R.sub.1 R.sub.2 N)C:X where X is O, S or NH and where R 1 is H or CH 3 , and where R 2 is H or CH 3 , and a gelatinized cereal grain or an amylaceous fraction thereof, with the association of said mixture having been effected by heating to a temperature between 70° and 180° C, the nitrogen compound being present in the amount of 3-20 percent based upon the weight of the cereal grain.
Claim 11
Dependent Claim
177 words
A particle board comprising a blend of wood particles and a resin-binder mixture, with the resin-binder mixture being 5-20 percent of the weight of the wood particles, and said blend having been subjected to a heat of 250°-450° F at pressures of 300-2000 psi for five to twenty minutes, the resin-binder mixture comprising an intimate mixture of 5-50 percent of an amylaceous binder and 50-95 percent of a resin selected from the group of urea-formaldehyde, melamine-formaldehyde and phenol-formaldehyde resins or mixture thereof, the amylaceous binder comprising a mixture of a nitrogen compound from the family containing the chemical grouping >N(R.sub.1 R.sub.2 N)C:X where X is O, S or NH and where R 1 is H or CH 3 , and where R 2 is H or CH 3 , and a gelatinized cereal grain or an amylaceous fraction thereof, with the association of said mixture having been effected by heating to a temperature between 70° and 180° C, the nitrogen compound being present in the amount of 3-20 percent based upon the weight of the cereal grain.
Claim 12
Dependent Claim
15 words
A particle board as claimed in claim 8 in which the nitrogen compound is urea.
Claim 13
Dependent Claim
28 words
A particle board as claimed in claim 8 in which the nitrogen compound is selected from a group comprising the following: urea, biurea, biuret, thiourea, guanidine, and dicyandiamide.
Claim 14
Dependent Claim
43 words
A particle board as claimed in claim 8 in which the nitrogen compound is of the general formula (R 1 R 2 N) 2 C:X, where R 1 and R 2 are H or CH 3 , and X is O or S.
Claim 15
Dependent Claim
30 words
A particle board as claimed in claim 8 in which the nitrogen compound is of the family containing the chemical grouping >N(H.sub.2 N)C:X where X is O, S, or NH.
Claim 16
Dependent Claim
39 words
A particle board as claimed in claim 8 in which the amylaceous material is selected from the group comprising the following: corn flour, corn starch, grain sorghum flour, corn meal, corn grits, milo meal, milo grits, and wheat flour.
Claim 17
Dependent Claim
17 words
A new composition of matter as claimed in claim 7 in which the nitrogen compound is urea.
Claim 18
Dependent Claim
30 words
A new composition of matter as claimed in claim 7 in which the nitrogen compound is selected from a group comprising the following: urea, biurea, biuret, thiourea, guanidine, and dicyandiamide.
Claim 19
Dependent Claim
45 words
A new composition of matter as claimed in claim 7 in which the nitrogen compound is of the general formula (R 1 R 2 N) 2 C:X, where R 1 and R 2 are H or CH 3 , and X is O or S.
Claim 20
Dependent Claim
32 words
A new composition of matter as claimed in claim 7 in which the nitrogen compound is of the family containing the chemical grouping >N(H.sub.2 N)C:X where X is O, S, or NH.
Claim 21
Dependent Claim
41 words
A new composition of matter as claimed in claim 7 in which the amylaceous material is selected from the group comprising the following: corn flour, corn starch, grain sorghum flour, corn meal, corn grits, milo meal, milo grits, and wheat flour.
References Cited (Backward Citations)
US2282364A
Cited
US3725324A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-09-28 | 1980-03-29 | 1980-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-28 | 1984-03-29 | 1984-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-28 | 1988-03-29 | 1988-09-28 | $7700.00 | Window Closed / Lapsed |