US4087482A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Furfuryl alcohol modified polyester resins containing metal atoms
Assignee: BP Chemicals Hitco Inc
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Filing: 1976-08-16
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Granted: 1978-05-02
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Expires: 1996-08-16
Abstract
Abstract There are disclosed furfuryl alcohol copolymers of a polyester prepolymer of maleic acid or anhydride and a polyhydric alcohol which incorporate tungsten and/or molybdenum metal atoms. The metal atoms are incorporated into the copolymers by reacting the polyester prepolymer with a reaction product of tungsten or molybdenum and pyrrolidine.
Inventors
- 👤 Robert C. Shaffer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:19
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/68; C08K; C08K3/00; C08K3/02; C08K3/04; C08K3/08
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
58 words
A copolymer of furfuryl alcohol and a polyester prepolymer which is a condensation product of a slight stoichiometric excess of maleic acid or anhydride and a polyhydric alcohol, said copolymer containing tungsten and/or molybdenum metal atoms, said polyester prepolymer having been reacted with a complex which is a reaction product of tungsten carbonyl and/or molybdenum carbonyl with pyrrolidine.
Claim 2
Dependent Claim
58 words
A copolymer of furfuryl alcohol and a polyester prepolymer which is a condensation product of a slight stoichiometric excess of maleic acid or anhydride and a polyhydric alcohol, said copolymer containing tungsten and/or molybdenum metal atoms, said polyester prepolymer having been reacted with a complex which is a reaction product of tungsten carbonyl and/or molybdenum carbonyl with pyrrolidine.
Claim 3
Dependent Claim
29 words
A copolymer as defined in claim 1 wherein from about 30 to 150 parts by weight of said reaction product is reacted with 100 parts by weight of polyester.
Claim 4
Dependent Claim
38 words
A copolymer as defined in claim 1 wherein said metal is present in said copolymer in such a manner as to remain in the charred resin product without volitilizing and to show no evidence of metal particle agglomeration.
Claim 5
Dependent Claim
55 words
A method for producing a copolymer as defined in claim 1 which comprises first reacting a tungsten carbonyl and/or a molybdenum carbonyl with pyrrolidine, subsequently reacting the resultant product with a polyester prepolymer of maleic acid or anhydride and a polyhydric alcohol, and then reacting this product with furfuryl alcohol to form a thermosetting copolymer.
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) | 1981-05-01 | 1981-10-31 | 1982-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-01 | 1985-10-31 | 1986-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-01 | 1989-10-31 | 1990-05-02 | $7700.00 | Window Closed / Lapsed |