US4397977A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tetrahalophthalates as flame retardant plasticizers for halogenated resins
Assignee: Laurel Industries Inc
•
Filing: 1981-05-11
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Granted: 1983-08-09
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Expires: 2001-05-11
Abstract
Abstract A flame retarded composition containing tetrahalophthalate plasticizer and a halogenated resin is provided.
Inventors
- 👤 Stanley R. Sandler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:31
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/10; C08K5/12; C08K5/16; C08K5/20
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
141 words
The process of smoke and flame retarding and plasticizing halogenated resins comprising adding to a halogenated resin, 1 to 100 parts per hundred parts of resin of a plasticizer of the structure: ##STR17## wherein (a) the ring can have all possible isomeric arrangements; (b) R is selected from the group consisting of hydrogen, an alkyl of 1 to 10 carbons, and polyhydroxyalkyl of 3 to 10 carbons; (c) R 1 is selected from the group consisting of a hydrogen, an alkyl or a substituted alkyl of 1 to 12 carbons, or ##STR18## (d) R 2 is independently selected from the class consisting of H and CH 3 --; (e) p is an integer of 4 to 50; (f) x is selected from O or NH; and (g) A is selected from Cl or Br so as to form a uniform composition.
Claim 2
Dependent Claim
141 words
The process of smoke and flame retarding and plasticizing halogenated resins comprising adding to a halogenated resin, 1 to 100 parts per hundred parts of resin of a plasticizer of the structure: ##STR17## wherein (a) the ring can have all possible isomeric arrangements; (b) R is selected from the group consisting of hydrogen, an alkyl of 1 to 10 carbons, and polyhydroxyalkyl of 3 to 10 carbons; (c) R 1 is selected from the group consisting of a hydrogen, an alkyl or a substituted alkyl of 1 to 12 carbons, or ##STR18## (d) R 2 is independently selected from the class consisting of H and CH 3 --; (e) p is an integer of 4 to 50; (f) x is selected from O or NH; and (g) A is selected from Cl or Br so as to form a uniform composition.
Claim 3
Dependent Claim
49 words
The process of claim 1 wherein a mixture of the halogenated resin and plasticizer is hot milled at 260°-350° F. for 1-4 minutes after fusion to form a uniform composition and the milled sheets are pressed at 360°-370° F. at 2000 to 3000 psi for 20 to 60 seconds.
Claim 4
Dependent Claim
14 words
The process of claim 1 wherein the halogenated resin is PVC or its copolymer.
Claim 5
Dependent Claim
20 words
The process of claim 1 wherein one or more of plasticizers, fillers, antimony oxide, stabilizers and smoke suppressants are present.
Claim 6
Dependent Claim
12 words
The process of claim 1 wherein the halogenated resin is chlorosulfonated polyethylene.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-08-08 | 1987-02-07 | 1987-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-08 | 1991-02-07 | 1991-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-08 | 1995-02-07 | 1995-08-09 | $7700.00 | Window Closed / Lapsed |