US3361687A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-extinguishing finely divided expandable plastics compositions
Assignee: BASF SE
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Filing: 1964-02-14
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Granted: 1968-01-02
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Expires: 1984-02-14
Abstract
No abstract record available.
Inventors
- 👤 Stahnecker Erhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:52
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/16; C08J9/20; C08J9/0014; C08J9/0019; C08K; C08K5/00; C08K5/0008; C08K5/0066; C08J2325/00; C08J2325/02; C08J2325/04; C08J2325/08; C08J2325/12; Y; Y10; Y10S; Y10S521/00; Y10S521/907
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
A SELF-EXTINGUISHING EXPANDABLE POLYMER COMPOSITION COMPRISING: (A) A THERMOPLASTIC STYRENE COPOLYMER CONSISTING OF AT LEAST 80% BY WEIGHT OF STYRENE UNITS, 0.5 TO 5% BY WEIGHT OF ACRYLONITRILE UNITS AND NOT MORE THAN 15% BY WEIGHT OF UNITS OF AT LEAST ONE MONOMER SELECTED FROM THE GROUP CONSISTING OF THE ESTERS OF METHACRYLIC ACID AND ACRYLIC ACID WITH ALCOHOLS WHICH CONTAIN ONE TO EIGHT CARBON ATOMS, NUCLEAR HALOGENATED STYRENES AND NUCLEAR ALKYLATED STYRENES, AND (B) AN ORGANIC BROMINE COMPOUND HAVING A BROMINE CONTENT OF MORE THAN 50% BY WEIGHT IN SUCH AN AMOUNT THAT THE BROMINE CONTENT OF THE MIXTURE WITH REFERENCE TO THE STYRENE COPOLYMER IS BETWEEN 0.5 AND 6% BY WEIGHT, SAID ORGANIC BROMINE COMPOUND BEING SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC AND CYCLOALIPHATIC COMPOUNDS CONTAINING A PLURALITY OF BROMINE ATOMS, AND ESTERS AND ACETALS OF 2,3-DIBROMOPROPANOL.
Claim 2
Dependent Claim
140 words
A SELF-EXTINGUISHING EXPANDABLE POLYMER COMPOSITION COMPRISING: (A) A THERMOPLASTIC STYRENE COPOLYMER CONSISTING OF AT LEAST 80% BY WEIGHT OF STYRENE UNITS, 0.5 TO 5% BY WEIGHT OF ACRYLONITRILE UNITS AND NOT MORE THAN 15% BY WEIGHT OF UNITS OF AT LEAST ONE MONOMER SELECTED FROM THE GROUP CONSISTING OF THE ESTERS OF METHACRYLIC ACID AND ACRYLIC ACID WITH ALCOHOLS WHICH CONTAIN ONE TO EIGHT CARBON ATOMS, NUCLEAR HALOGENATED STYRENES AND NUCLEAR ALKYLATED STYRENES, AND (B) AN ORGANIC BROMINE COMPOUND HAVING A BROMINE CONTENT OF MORE THAN 50% BY WEIGHT IN SUCH AN AMOUNT THAT THE BROMINE CONTENT OF THE MIXTURE WITH REFERENCE TO THE STYRENE COPOLYMER IS BETWEEN 0.5 AND 6% BY WEIGHT, SAID ORGANIC BROMINE COMPOUND BEING SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC AND CYCLOALIPHATIC COMPOUNDS CONTAINING A PLURALITY OF BROMINE ATOMS, AND ESTERS AND ACETALS OF 2,3-DIBROMOPROPANOL.
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) | 1971-01-01 | 1971-07-03 | 1972-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-01 | 1975-07-03 | 1976-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-01 | 1979-07-03 | 1980-01-02 | $7700.00 | Window Closed / Lapsed |