US3624028A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Processing of flame-resistant polymers
Assignee: Phillips Petroleum Co
•
Filing: 1970-05-12
•
Granted: 1971-11-30
•
Expires: 1990-05-12
Abstract
Abstract The processability temperature limit for polymers containing flame retardants such as antimony oxide and bis(halogenated cyclohexyl) halogenated alkanes is raised by the addition of an aromatic ester.
Inventors
- 👤 William O Drake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 17:35
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/02; C08K5/04; C08K5/10
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
26 words
A composition according to claim 1 wherein said polymer is polyethylene, polypropylene or propylene-ethylene copolymer and said halogenated compound is 1,2-bis(3,4-dichlorocyclohexyl)-1,2-dichloroethane, 1,2-bis(3,4-dibromocyclohexyl)-1,2-dibromoethane or a mixture thereof.
Claim 2
Dependent Claim
17 words
A composition according to claim 1 wherein said polymer is polypropylene and said halogenated compound is 1,2-bis(dibromocyclohexyl)-1,2-dibromomethane.
Claim 3
Dependent Claim
27 words
A composition according to claim 1 wherein 0.3 to 0.6 parts by weight per 100 parts by weight of said polymer of said aromatic ester is employed.
Claim 4
Dependent Claim
38 words
A composition according to claim 1 wherein said acid is o-phthalic acid, m-phthalic acid, p-phthalic acid, trimellitic acid, prehnitic acid and said alcohol is hexanol-1,2-methyl-pentanol-1, 1-heptanol, 1-octanol, 2-ethylhexanol, isooctyl alcohol, 1-decanol, 1-tridecanol, 1-nonanol, isononanol alcohol or isodecyl alcohol.
Claim 5
Dependent Claim
51 words
A composition according to claim 1 wherein said ester is di-n-octyl phthalate, diisooctyl phthalate, di-n-hexyl phthalate, di-n-nonyl phthalate, didecyl phthalate, di(2-ethylhexyl)phthalate, diisodecyl phthalate, ditridecyl phthalate, octyl decyl phthalate, decyltridecyl phthalate, isooctyl isodecyl phthalate, n-octyl di-n-decyl trimellitate, tri-n-octyl trimellitate, triisooctyl trimellitate, diisooctyl mono isodecyl trimellitate, triisodecyl trimellitate, 1,2-diisooctyl-3,4-di-n-nonyl prehnitate, or 1,2,3,4-tetra-n-hexyl prehnitate.
Claim 6
Dependent Claim
34 words
A composition according to claim 1 wherein said ester is di-(2-ethylhexyl) phthalate, ditridecyl phthalate, diisononyl phthalate, di-n-octyl phthalate, diisodecyl phthalate, triisooctyl trimellitate, diisooctyl mono isodecyl trimellitate, diisooctyl phthalate, or diisooctyl phthalate and diisodecyl phthalate.
Claim 7
Dependent Claim
14 words
A composition according to claim 1 in which two of said esters are used.
References Cited (Backward Citations)
US3441524A
Cited
US3365505A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-29 | 1975-05-31 | 1975-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-29 | 1979-05-31 | 1979-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-29 | 1983-05-31 | 1983-11-30 | $7700.00 | Window Closed / Lapsed |