Patent US3699153A successfully refreshed from Google Patents.
US3699153A
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Preparation of hydroxyl terminated polymers
Assignee: Goodrich Corp
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Filing: 1970-07-02
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Granted: 1972-10-17
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Expires: 1990-07-02
Abstract
Abstract Hydroxyl terminated polymers, useful as adhesives and caulking materials, are prepared by the reaction of carboxyl terminated polymers with a diol in the presence of an acid catalyst.
Inventors
- 👤 Alan R Siebert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:06
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/78; C08G63/82; C08F; C08F8/00; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/62; C08G18/6216; C08G18/622; C08G18/6245; C08G18/67; C08G18/69; C08G18/694; C08G63/02; C08G63/12; C08G63/52; C08G2190/00
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
53 words
The liquid hydroxyl terminated polymers of claim 1 where the amount of said hydroxy compound is 5 - 30 parts per hundred parts of liquid carboxyl terminated polymer and is calculated to be a 5 - 10 fold excess on the basis of one mole of said hydroxy compound per mole of -COOH.
Claim 2
Dependent Claim
16 words
The liquid hydroxyl terminated polymers of claim 1 where the liquid carboxyl terminated polymer is polybutadiene.
Claim 3
Dependent Claim
17 words
The liquid hydroxyl terminated polymers of claim 1 where the liquid carboxyl terminated polymer is polybutyl acrylate.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-17 | 1976-04-17 | 1976-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-17 | 1980-04-17 | 1980-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-17 | 1984-04-17 | 1984-10-17 | $7700.00 | Window Closed / Lapsed |