Patent US3888912A successfully refreshed from Google Patents.
US3888912A
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Process for making beta-acryloyloxypropanoic acid
Assignee: 3M Co
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Filing: 1973-08-20
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Granted: 1975-06-10
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Expires: 1993-08-20
Abstract
Abstract Beta -ACRYLOYLOXYPROPANOIC ACID IS PRODUCED BY HEATING ACRYLIC ACID IN THE PRESENCE OF ALUMINUM CHLORIDE.
Inventors
- 👤 Mario D Burguette
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:23
CPC Classifications
C; C07; C07C; C07C69/00; C07C69/52; C07C69/533; C07C69/54
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
21 words
THE PROCESS FOR PRODUCING B-ACRYLOYLOXYPROPANOIC ACID WHICH COMPRISES HEATING ACRYLIC ACID IN THE PRESENCE OF A CATALYTIC AMOUNT OF ALUMINUM TRICHLORIDE.
Claim 2
Dependent Claim
21 words
THE PROCESS FOR PRODUCING B-ACRYLOYLOXYPROPANOIC ACID WHICH COMPRISES HEATING ACRYLIC ACID IN THE PRESENCE OF A CATALYTIC AMOUNT OF ALUMINUM TRICHLORIDE.
Claim 3
Dependent Claim
11 words
The process of claim 1 wherein the aluminum trichloride is anhydrous.
Claim 4
Dependent Claim
15 words
The process of claim 2 wherein the aluminum trichloride is dissolved in the acrylic acid.
Claim 5
Dependent Claim
15 words
The process of claim 1 wherein the reaction is carried out at about 150*-160* C.
Claim 6
Dependent Claim
15 words
The process of claim 2 wherein the reaction is carried out at about 150*-160* C.
Claim 7
Dependent Claim
15 words
The process of claim 3 wherein the reaction is carried out at about 150*-160* C.
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) | 1978-06-09 | 1978-12-09 | 1979-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-09 | 1982-12-09 | 1983-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-09 | 1986-12-09 | 1987-06-10 | $7700.00 | Window Closed / Lapsed |