US4011183A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Building board products and process for producing same
Assignee: Grefco Inc
•
Filing: 1976-07-22
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Granted: 1977-03-08
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Expires: 1996-07-22
Abstract
Abstract Shaped articles for construction and insulation which are water repellent are prepared by dry blending expanded perlite particles and fibers, applying to the resulting mixture a solution of a reactive synthetic organic binder in a low boiling organic solvent. The binder is capable of being cured at ambient temperatures and of reacting with hydroxyl groups present in the perlite and fibers to provide the articles with water repellent properties. The mixture containing binder is formed into the desired shape, e.g. panels, solvent is removed and the binder is cured at substantially ambient or slightly higher temperatures.
Inventors
- 👤 David Lee Ruff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:19
CPC Classifications
C; C04; C04B; C04B26/00; C04B26/02; C04B26/10; C04B26/16; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/91; Y10; Y10S; Y10S260/00; Y10S260/24; Y10S264/00; Y10S264/07
Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
84 words
A method of producing water repellent shaped articles for construction and insulation which comprises applying to expanded perlite particles a solution of a synthetic organic binder in an organic solvent which is liquid at ambient temperatures and has a boiling point below about 150° F., said binder being capable of curing upon standing at ambient temperatures and of reacting with hydroxyl groups present in said expanded perlite, forming a mass of said particles into the desired shape, removing said solvent and curing said binder.
Claim 2
Independent Claim
84 words
A method of producing water repellent shaped articles for construction and insulation which comprises applying to expanded perlite particles a solution of a synthetic organic binder in an organic solvent which is liquid at ambient temperatures and has a boiling point below about 150° F., said binder being capable of curing upon standing at ambient temperatures and of reacting with hydroxyl groups present in said expanded perlite, forming a mass of said particles into the desired shape, removing said solvent and curing said binder.
Claim 3
Dependent Claim
18 words
The method according to claim 1 in which said binder comprises an aromatic polyisocyanate having no ortho substituent.
Claim 4
Dependent Claim
37 words
The method according to claim 2 in which the amount of polyisocyanate binder employed is such as to provide isocyanate groups about 5% in excess of those required to react with the hydroxyl groups of said perlite.
Claim 5
Dependent Claim
13 words
The method according to claim 3 in which said polyisocyanate is 4,4'-diphenylmethane diisocyanate.
Claim 6
Dependent Claim
69 words
The method according to claim 1 in which said binder comprises a curable mixture of an aromatic polyisocyanate having no ortho substituent, a polyfunctional, active-hydrogen-containing compound and a catalyst for promoting reaction between isocyanate and hydroxyl groups, said polyisocyanate being present in an amount such as to provide isocyanate groups about 5% in excess of those required to react with the hydroxyl groups of said perlite and said compound.
Claim 7
Dependent Claim
38 words
The method according to claim 5 in which said binder comprises a curable mixture of 4,4'-diphenylmethane diisocyanate, and a polyoxypropylene derivative of sucrose, and said catalyst comprises a mixture of about 20%, by weight, triethylenediamine and 80% dimethylethanolamine.
Claim 8
Independent Claim
99 words
A method of producing water repellent shaped articles for construction and insulation which comprises dry blending expanded perlite particles and fibers to obtain a substantially homogeneous mixture, applying to said mixture a solution of a synthetic organic binder in an organic solvent which is a liquid at ambient temperatures and has a boiling point below about 150° F., said binder being capable of curing upon standing at ambient temperatures and of reacting with hydroxyl groups present in said expanded perlite and fibers, forming said mixture containing organic binder into the desired shape, removing said solvent and curing said binder.
Claim 9
Independent Claim
99 words
A method of producing water repellent shaped articles for construction and insulation which comprises dry blending expanded perlite particles and fibers to obtain a substantially homogeneous mixture, applying to said mixture a solution of a synthetic organic binder in an organic solvent which is a liquid at ambient temperatures and has a boiling point below about 150° F., said binder being capable of curing upon standing at ambient temperatures and of reacting with hydroxyl groups present in said expanded perlite and fibers, forming said mixture containing organic binder into the desired shape, removing said solvent and curing said binder.
Claim 10
Dependent Claim
30 words
The method according to claim 7 in which said mixture of expanded perlite and fibers comprises from about 10 to about 85% by weight of said mixture of expanded perlite.
Claim 11
Dependent Claim
28 words
The method according to claim 8 in which said mixture of expanded perlite and fibers comprises about 75% by weight of expanded perlite and 25% of cellulosic fibers.
Claim 12
Dependent Claim
18 words
The method according to claim 7 in which said binder comprises an aromatic polyisocyanate having no ortho substituent.
Claim 13
Dependent Claim
39 words
The method according to claim 10 in which the amount of polyisocyanate binder employed is such as to provide isocyanate groups about 5% in excess of those required to react with the hydroxyl groups of said perlite and fibers.
Claim 14
Dependent Claim
13 words
The method according to claim 11 in which said polyisocyanate is 4,4'-diphenylmethane diisocyanate.
Claim 15
Dependent Claim
70 words
The method according to claim 7 in which said binder comprises a curable mixture of an aromatic polyisocyanate having no ortho substituent, a polyfunctional, active-hydrogen-containing compound and a catalyst for promoting reaction between isocyanate and hydroxyl groups, said polyisocyanate being present in an amount such as to provide isocyanate groups about 5% in excess of those required to react with the hydroxyl groups of said perlite, fibers and said compound.
Claim 16
Dependent Claim
38 words
The method according to claim 13 in which said binder comprises a curable mixture of 4,4'-diphenylmethane diisocyanate, and a polyoxypropylene derivative of sucrose, and said catalyst comprises a mixture of about 20%, by weight, triethylenediamine and 80% dimethylethanolamine.
Claim 17
Dependent Claim
17 words
The method according to claim 7 in which said organic solvent for said binder comprises methylene chloride.
Claim 18
Dependent Claim
56 words
A shaped article for construction and insulation which is water repellent comprising expanded perlite particles bonded together by a synthetic organic binder, said binder being bonded to said perlite by reaction with hydroxyl groups present in said expanded perlite, said shaped article having a density of from about 10 to about 20 pounds per cubic foot.
Claim 19
Dependent Claim
56 words
A shaped article for construction and insulation which is water repellent comprising expanded perlite particles bonded together by a synthetic organic binder, said binder being bonded to said perlite by reaction with hydroxyl groups present in said expanded perlite, said shaped article having a density of from about 10 to about 20 pounds per cubic foot.
Claim 20
Dependent Claim
19 words
A shaped article according to claim 16 in which said binder comprises an aromatic polyisocyanate having no ortho substituent.
Claim 21
Dependent Claim
38 words
A shaped article according to claim 17 in which the amount of polyisocyanate binder employed is such as to provide isocyanate groups about 5% in excess of those required to react with the hydroxyl groups of said perlite.
Claim 22
Dependent Claim
14 words
A shaped article according to claim 18 in which said polyisocyanate is 4,4'-diphenylmethane diisocyanate.
Claim 23
Dependent Claim
70 words
A shaped article according to claim 16 in which said binder comprises a curable mixture of an aromatic polyisocyanate having no ortho substituent, a polyfunctional, active-hydrogen-containing compound and a catalyst for promoting reaction between isocyanate and hydroxyl groups, said polyisocyanate being present in an amount such as to provide isocyanate groups about 5% in excess of those required to react with the hydroxyl groups of said perlite and said compound.
Claim 24
Dependent Claim
38 words
The method according to claim 20 in which said binder comprises a curable mixture of 4,4'-diphenylmethane diisocyanate, and a polyoxypropylene derivative of sucrose, and said catalyst comprises a mixture of about 20%, by weight, triethylenediamine and 80% dimethylethanolamine.
Claim 25
Dependent Claim
69 words
A shaped article for construction and insulation which is water repellent comprising a substantially dry blending homogeneous mixture of expanded perlite particles and fibers bonded together by a synthetic organic binder, said binder being bonded to said perlite and fibers by reaction with hydroxyl groups present in said expanded perlite and fibers, said shaped article having a density of from about 10 to about 20 pounds per cubic foot.
Claim 26
Dependent Claim
69 words
A shaped article for construction and insulation which is water repellent comprising a substantially dry blending homogeneous mixture of expanded perlite particles and fibers bonded together by a synthetic organic binder, said binder being bonded to said perlite and fibers by reaction with hydroxyl groups present in said expanded perlite and fibers, said shaped article having a density of from about 10 to about 20 pounds per cubic foot.
Claim 27
Dependent Claim
31 words
A shaped article according to claim 22 in which said mixture of expanded perlite and fibers comprises from about 10 to about 85% by weight of said mixture of expanded perlite.
Claim 28
Dependent Claim
29 words
A shaped article according to claim 23 in which said mixture of expanded perlite and fibers comprises about 75% by weight of expanded perlite and 25% of cellulosic fibers.
Claim 29
Dependent Claim
19 words
A shaped article according to claim 22 in which said binder comprises an aromatic polyisocyanate having no ortho substituent.
Claim 30
Dependent Claim
40 words
A shaped article according to claim 25 in which the amount of polyisocyanate binder employed is such as to provide isocyanate groups about 5% in excess of those required to react with the hydroxyl groups of said perlite and fibers.
Claim 31
Dependent Claim
14 words
A shaped article according to claim 26 in which said polyisocyanate is 4,4'-diphenylmethane diisocyanate.
Claim 32
Dependent Claim
71 words
A shaped article according to claim 22 in which said binder comprises a curable mixture of an aromatic polyisocyanate having no ortho substituent, a polyfunctional, active-hydrogen-containing compound and a catalyst for promoting reaction between isocyanate and hydroxyl groups, said polyisocyanate being present in an amount such as to provide isocyanate groups about 5% in excess of those required to react with the hydroxyl groups of said perlite, fibers and said compound.
Claim 33
Dependent Claim
39 words
A shaped article according to claim 28 in which said binder comprises a curable mixture of 4,4'-diphenylmethane diisocyanate, and a polyoxypropylene derivative of sucrose, and said catalyst comprises a mixture of about 20%, by weight, triethylenediamine and 80% dimethylethanolamine.
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) | 1980-03-07 | 1980-09-06 | 1981-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-07 | 1984-09-06 | 1985-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-07 | 1988-09-06 | 1989-03-08 | $7700.00 | Window Closed / Lapsed |