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US4394286A
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Partially hydrolyzed, DMT process residue, and useful propylene oxide derivative thereof
Assignee: CAPE INDUSTRIES A JOINT VENTURE CONSISTING OF NCT Corp AND AMERICAN PETROFINA Inc
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Filing: 1981-05-20
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Granted: 1983-07-19
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Expires: 2001-05-20
Abstract
Abstract Disclosed is partially hydrolyzed, DMT process residue. Also disclosed is the reaction product of propylene oxide and the partially hydrolyzed, DMT process residue. The reaction product is useful as a polyol reactant in the preparation of urethane foams.
Inventors
- 👤 William H. Millick, III
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:27
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/32; C08G18/3203; C08G18/3221; C08G18/40; C08G18/48; C08G18/4887
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
20 words
As a composition of matter, partially hydrolyzed, DMT process residue, characterized by an Acid No. of about 150-375 mg. KOH/g.
Claim 2
Dependent Claim
20 words
As a composition of matter, partially hydrolyzed, DMT process residue, characterized by an Acid No. of about 150-375 mg. KOH/g.
Claim 3
Dependent Claim
61 words
A process for preparing partially hydrolyzed, DMT process residue, which comprises establishing a mixture of water and DMT process residue at a weight ratio of water to residue of about 0.05-5, a temperature of 200°-285° C. and a pressure of 220-1150 psig, and maintaining said mixture under these conditions until the Acid No. thereof has increased to about 150-375 mg. KOH/g.
Claim 4
Dependent Claim
61 words
A process for preparing partially hydrolyzed, DMT process residue, which comprises establishing a mixture of water and DMT process residue at a weight ratio of water to residue of about 0.05-5, a temperature of 200°-285° C. and a pressure of 220-1150 psig, and maintaining said mixture under these conditions until the Acid No. thereof has increased to about 150-375 mg. KOH/g.
Claim 5
Dependent Claim
22 words
The process according to claim 2 in which, after the partially hydrolyzed, DMT process residue has been formed, residual water is removed
Claim 6
Dependent Claim
32 words
As a composition of matter, a mixture of partially hydrolyzed, DMT process residue characterized by an Acid No. of about 150-375 mg. KOH/g, and a glycol containing 4 or more carbon atoms.
Claim 7
Dependent Claim
32 words
As a composition of matter, a mixture of partially hydrolyzed, DMT process residue characterized by an Acid No. of about 150-375 mg. KOH/g, and a glycol containing 4 or more carbon atoms.
Claim 8
Dependent Claim
15 words
A composition of matter according to claim 4 in which said glycol is dipropylene glycol.
Claim 9
Dependent Claim
29 words
As a composition of matter, the propylene oxide reaction product of partially hydrolyzed, DMT process residue, which residue is characterized by an Acid No. of about 150-375 mg KOH/g.
Claim 10
Dependent Claim
29 words
As a composition of matter, the propylene oxide reaction product of partially hydrolyzed, DMT process residue, which residue is characterized by an Acid No. of about 150-375 mg KOH/g.
Claim 11
Dependent Claim
32 words
A composition of matter according to claim 6 in which the Acid No. of the reaction product is about 0.2-10 mg KOH/g and the Hydroxyl value of the reaction product is 4-13.5%.
Claim 12
Dependent Claim
44 words
As a composition of matter, a mixture consisting essentially of the propylene oxide reaction product of partially hydrolyzed, DMT process residue, which residue is characterized by an Acid No. of about 150-375 mg. KOH/g., and dipropylene glycol up to about 20% of the mixture.
Claim 13
Dependent Claim
44 words
As a composition of matter, a mixture consisting essentially of the propylene oxide reaction product of partially hydrolyzed, DMT process residue, which residue is characterized by an Acid No. of about 150-375 mg. KOH/g., and dipropylene glycol up to about 20% of the mixture.
Claim 14
Dependent Claim
20 words
A composition of matter according to claim 8, the viscosity of which at 25° C. is less than 150,000 cps.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-07-18 | 1987-01-17 | 1987-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-07-18 | 1991-01-17 | 1991-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-07-18 | 1995-01-17 | 1995-07-19 | $7700.00 | Window Closed / Lapsed |