US4284550A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame retarding resin composition
Assignee: DIC Corp
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Filing: 1980-09-04
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Granted: 1981-08-18
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Expires: 2000-09-04
Abstract
Abstract A flame-retarding resin composition comprising (1) polybutylene terephthalate, (2) an organohalogen compound as a flame-retarding agent, (3) a flame-retarding supplementary agent, (4) calcium sulfate, and (5) an inorganic fibrous reinforcing agent, and optionally (6) at least one polymer selected from a saponified polyvinyl acetate having a saponification degree of greater than 50 mole %, an ethylene/vinyl acetate copolymer, and a saponified ethylene/vinyl acetate copolymer.
Inventors
- 👤 Shioji Mizuno
- 👤 Norio Enokimoto
- 👤 Kazuyoshi Oji
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:40
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/30; C08L; C08L67/00; C08L67/02
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
61 words
A flame-retarding resin composition comprising (1) polybutylene terephthalate, (2) an organohalogen compound as a flame-retarding agent, (3) a flame-retarding supplementary agent, (4) calcium sulfate, and (5) glass fiber reinforcing agent, and (6) at least one polymer selected from a saponified polyvinyl acetate having a saponification degree of greater than 50 mole%, an ethylene/vinyl acetate copolymer, and a saponified ethylene/vinyl acetate copolymer.
Claim 2
Dependent Claim
61 words
A flame-retarding resin composition comprising (1) polybutylene terephthalate, (2) an organohalogen compound as a flame-retarding agent, (3) a flame-retarding supplementary agent, (4) calcium sulfate, and (5) glass fiber reinforcing agent, and (6) at least one polymer selected from a saponified polyvinyl acetate having a saponification degree of greater than 50 mole%, an ethylene/vinyl acetate copolymer, and a saponified ethylene/vinyl acetate copolymer.
Claim 3
Dependent Claim
32 words
A composition according to claim 1, comprising 3 to 50 parts by weight, per 100 parts by weight of the polybutylene terephthalate (1), of the organohalogen compound (2) as a flame-retarding agent.
Claim 4
Dependent Claim
29 words
A composition according to claim 1, comprising 0.1 to 20 parts by weight, per 100 parts by weight of the polybutylene terephthalate (1), of the flame-retarding supplementary agent (3).
Claim 5
Dependent Claim
27 words
A composition according to claim 1, comprising 5 to 100 parts by weight, per 100 parts by weight of the polybutylene terephthalate (1), of the calcium sulfate.
Claim 6
Dependent Claim
30 words
A composition according to claim 1, comprising 5 to 120 parts by weight, per 100 parts by weight of the polybutylene terephthalate (1), of the glass fiber reinforcing agent (5).
Claim 7
Dependent Claim
105 words
A composition according to claim 1, comprising 100 parts by weight of the polybutylene terephthalate (1), 3 to 50 parts by weight of the organohalogen compound (2) as a flame-retarding agent, 0.1 to 20 parts by weight of the flame-retarding supplementary agent (3), 5 to 100 parts by weight of the calcium sulfate, (4) 5 to 120 parts by weight of the glass fiber reinforcing agent (5), and 1.0 to 30 parts by weight of at least one polymer (6) selected from the saponified polyvinyl acetate having a saponification degree of greater than 50 mole%, the ethylene/vinyl acetate copolymer, and the saponified ethylene/vinyl acetate copolymer.
Claim 8
Dependent Claim
26 words
A composition according to claim 1, wherein the organohalogen compound (2) as a flame-retarding agent contains two or more chlorine and/or bromine atoms in one molecule.
Claim 9
Dependent Claim
25 words
A composition according to claim 1, wherein the flame-retarding supplementary agent (3) is an oxide, sulfide, halide, borate, metaborate, carbonate or hydroxide or a metal.
Claim 10
Dependent Claim
69 words
A process for preparing a flame-retarding resin composition, which comprises heating and kneading (1) polybutylene terephthalate, (2) an organohalogen compound as a flame-retarding agent, (3) a flame-retarding supplementary agent, (4) calcium sulfate, and (5) glass fiber reinforcing agent, and (6) at least one polymer selected from a saponified polyvinyl acetate having a saponification degree of greater than 50 mole%, an ethylene/vinyl acetate copolymer, and a saponified ethylene/vinyl acetate copolymer.
Claim 11
Dependent Claim
69 words
A process for preparing a flame-retarding resin composition, which comprises heating and kneading (1) polybutylene terephthalate, (2) an organohalogen compound as a flame-retarding agent, (3) a flame-retarding supplementary agent, (4) calcium sulfate, and (5) glass fiber reinforcing agent, and (6) at least one polymer selected from a saponified polyvinyl acetate having a saponification degree of greater than 50 mole%, an ethylene/vinyl acetate copolymer, and a saponified ethylene/vinyl acetate copolymer.
Claim 12
Dependent Claim
32 words
A process according to claim 9, wherein the heating and kneading is performed using an extruder at a temperature of 180° to 300° C. for a period of 0.2 to 30 minutes.
Claim 13
Dependent Claim
9 words
Articles obtained using a composition according to claim 1.
Claim 14
Dependent Claim
80 words
A composition according to claim 1 comprising 100 parts by weight of the polybutylene terephthalate (1); 10 to 40 parts by weight of the organohalogen compound (2) as a flame-retarding agent; 1 to 15 parts by weight of the flame-retarding supplementary agent (3); 10 to 70 parts by weight of the calcium sulfate (4); 10 to 100 parts by weight of the glass fiber reinforcing agent (5); and 1.0 to 30 parts by weight of at least one polymer (6).
Claim 15
Dependent Claim
20 words
A composition according to claim 12 which comprises 2 to 30 parts by weight of at least one polymer (6).
Claim 16
Dependent Claim
47 words
A composition according to claim 1 wherein the organohalogen compound as flame-retarding agent (2) is an aromatic halogen compound containing two or more halogen atoms selected from the group consisting of chlorine and bromine or mixtures thereof and the flame retarding supplementary agent (3) is antimony trioxide.
Claim 17
Dependent Claim
21 words
A process according to claim 14 wherein the aromatic halogen compound (2) is the reaction product of tetrabromobisphenol A with epichlorohydrin.
Claim 18
Dependent Claim
81 words
A composition according to claim 1 which comprises 100 parts by weight of the polybutylene terephthalate (1); about 24 parts by weight of the aromatic halogen compound (2); about 7 parts by weight of antimony trioxide (3); about 60 parts by weight of calcium sulfate (4); about 48 parts by weight of glass fiber reinforcing agent (5); and a mixture of about 10 parts by weight of ethylene/vinyl acetate copolymer and about 5 parts by weight of saponified ethylene/vinyl acetate 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) | 1984-08-17 | 1985-02-16 | 1985-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-17 | 1989-02-16 | 1989-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-17 | 1993-02-16 | 1993-08-18 | $7700.00 | Window Closed / Lapsed |