US4268433A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1,2-Polybutadiene compositions and cured flame retarded 1,2-polybutadiene resin materials
Assignee: Fujitsu Ltd
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Filing: 1979-08-29
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Granted: 1981-05-19
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Expires: 1999-08-29
Abstract
Abstract Flame retardation of 1,2-polybutadiene based upon the use of halogenated bisphenol bisacrylate reactive flame retardants, for example, 2,2-bis(4-methacryloyl-3,5-dibromophenyl)-propane. Flame retardancy performance of UL 94 V-0 or V-1 has been achieved without impairing desirable dielectric properties and heat resistance inherently possessed by 1,2-polybutadiene. If an aromatic bismaleimide modifier, for example, N,N'-4,4'-diphenylmethane bismaleimide, is jointly used, a thermal expansion coefficient less than a half of the thermal expansion coefficient of cured 1,2-polybutadiene can be achieved.
Inventors
- 👤 Norio Sawatari
- 👤 Isao Watanabe
- 👤 Kazumasa Saito
- 👤 Katsura Adachi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:14
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/10; C08K5/101; C08K5/105; C08K5/107; C08K5/13; C08K5/14; C08K5/16; C08K5/34; H; H05; H05K; H05K1/00; H05K1/02; H05K1/03; H05K1/0313; H05K1/032; H05K1/0326; H05K1/0353; H05K1/0373
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
130 words
A composition curable to a flame-retarded resin material, comprising: (A) a polybutadiene polymer wherein at least 50% of the recurring units consist of 1,2-butadiene units; (B) 40 to 200 parts by weight, based on 100 parts by weight of said butadiene polymer, of at least one reactive flame retardant selected from the group consisting of bisphenol bisacrylate compounds having the formula: ##STR12## wherein X is Br or Cl, Y is H or --CH 3 , m and n each is an integer from 1 through 4, and A is a direct bond, --O--, --CO--, --SO 2 --, --CH 2 -- b , wherein b is an integer from 1 through 4, --CH═CH-- or ##STR13## and polymers of such bisphenol bisacrylate compounds, and; (C) a curing-promoting amount of an organic peroxide.
Claim 2
Dependent Claim
130 words
A composition curable to a flame-retarded resin material, comprising: (A) a polybutadiene polymer wherein at least 50% of the recurring units consist of 1,2-butadiene units; (B) 40 to 200 parts by weight, based on 100 parts by weight of said butadiene polymer, of at least one reactive flame retardant selected from the group consisting of bisphenol bisacrylate compounds having the formula: ##STR12## wherein X is Br or Cl, Y is H or --CH 3 , m and n each is an integer from 1 through 4, and A is a direct bond, --O--, --CO--, --SO 2 --, --CH 2 -- b , wherein b is an integer from 1 through 4, --CH═CH-- or ##STR13## and polymers of such bisphenol bisacrylate compounds, and; (C) a curing-promoting amount of an organic peroxide.
Claim 3
Dependent Claim
51 words
The composition in accordance with claim 1, wherein at least 80% of the recurring units of said butadiene polymer consist of 1,2-butadiene units, and wherein said reactive flame retardant is present in an amount from 60 to 120 parts by weight based on 100 parts by weight of said butadiene polymer.
Claim 4
Dependent Claim
54 words
The composition in accordance with claim 2, wherein said reactive flame retardant is selected from the group consisting of bisphenol bisacrylate compounds having the formula: ##STR14## wherein A' is --SO 2 --or ##STR15## and Y, m and n have the same meaning as defined in claim 1, and polymers of such bisphenol bisacrylate compounds.
Claim 5
Dependent Claim
17 words
The composition in accordance with claim 3, wherein said reactive flame retardant is 2,2-bis(4-methacryloyl-3,5-dibromophenyl)propane or its polymer.
Claim 6
Dependent Claim
62 words
The composition in accordance with claim 1, which further comprises 10 to 150 parts by weight, based on 100 parts by weight of said butadiene polymer, of at least one modifier selected from the group consisting of bismaleimide compounds having the formula: ##STR16## wherein R is a divalent aromatic radical having up to 70 carbon atoms, and polymers of such bismaleimide compounds.
Claim 7
Dependent Claim
32 words
The composition in accordance with claim 5, wherein said modifier is present in an amount from 30 to 100 parts by weight based on 100 parts by weight and said butadiene polymer.
Claim 8
Dependent Claim
159 words
A cured flame retarded resin material exhibiting a flame retardancy performance of at least V-1, as measured according to the Underwriters Laboratories Standard UL 94 using the Vertical Burning Test, said material being obtained by curing a composition comprising: (A) A polybutadiene polymer wherein at least 50% of the recurring units consist of 1,2-butadiene units; (B) 40 to 200 parts by weight, based on 100 parts by weight of said butadiene polymers, of at least one reactive flame retardant selected from the group consisting of bisphenol bisacrylate compounds having the formula: ##STR17## wherein X is Br or Cl, Y is H or --CH 3 , m and n each is an integer from 1 to 4, and A is a direct bond, --O--, --CO--, --SO 2 --, --CH 2 -- b , wherein b is an integer of 1 through 4, --CH═CH-- or ##STR18## polymers of such bisphenol bisacrylate compounds, and; (C) a curing-promoting amount of an organic peroxide.
Claim 9
Dependent Claim
159 words
A cured flame retarded resin material exhibiting a flame retardancy performance of at least V-1, as measured according to the Underwriters Laboratories Standard UL 94 using the Vertical Burning Test, said material being obtained by curing a composition comprising: (A) A polybutadiene polymer wherein at least 50% of the recurring units consist of 1,2-butadiene units; (B) 40 to 200 parts by weight, based on 100 parts by weight of said butadiene polymers, of at least one reactive flame retardant selected from the group consisting of bisphenol bisacrylate compounds having the formula: ##STR17## wherein X is Br or Cl, Y is H or --CH 3 , m and n each is an integer from 1 to 4, and A is a direct bond, --O--, --CO--, --SO 2 --, --CH 2 -- b , wherein b is an integer of 1 through 4, --CH═CH-- or ##STR18## polymers of such bisphenol bisacrylate compounds, and; (C) a curing-promoting amount of an organic peroxide.
Claim 10
Dependent Claim
56 words
The resin material in accordance with claim 7, wherein at least 80% of the recurring units of said butadiene polymer consist of 1,2-butadiene units, and wherein said reactive flame retardant is present in said curable composition in an amount from 60 to 120 parts by weight based on 100 parts by weight of said butadiene polymer.
Claim 11
Dependent Claim
55 words
The resin material in accordance with claim 8, wherein said reactive flame retardant is selected from the group consisting of bisphenol bisacrylate compounds having the formula: ##STR19## wherein A' is --SO 2 --or ##STR20## and Y, m and n have the same meanings as defined in claim 7, and polymers of such bisphenols bisacrylate compounds.
Claim 12
Dependent Claim
17 words
The resin-material in accordance with claim 9, wherein said reactive flame retardant is 2,2-bis(4-methacryloyl-3,5-dibromophenyl)propane or its polymer.
Claim 13
Dependent Claim
82 words
The resin material in accordance with claim 7, wherein said resin has a thermal expansion coefficient of less than 1×10 -4 /° C., and wherein said curable composition further comprises 10 to 150 parts by weight, based on 100 parts by weight of said butadiene polymer, of at least one modifier selected from the group consisting of bismaleimide compounds having the formula: ##STR21## wherein R is a divalent aromatic radical having up to 70 carbon atoms, and polymers of such bismaleimide compounds.
Claim 14
Dependent Claim
37 words
The resin material in accordance with claim 11, wherein said modifier is present in said curable composition in an amount of 30 to 100 parts by weight based on 100 parts by weight of said butadiene polymer.
Claim 15
Dependent Claim
80 words
The resin material of claim 8, wherein said resin has a thermal expansion coefficient of less than 1×10 -4 /° C., and wherein said curable composition further comprises 10 to 150 parts by weight, based on 100 parts by weight of said butadiene polymer, of at least one modifier selected from the group consisting of bismaleimide compounds having the formula: ##STR22## wherein R is a divalent aromatic radical having up to 70 carbon atoms, and polymers of such bismaleimide compounds.
Claim 16
Dependent Claim
80 words
The resin material of claim 9, wherein said resin has a thermal expansion coefficient of less than 1×10 -4 /° C., and wherein said curable composition further comprises 10 to 150 parts by weight, based on 100 parts by weight of said butadiene polymer, of at least one modifier selected from the group consisting of bismaleimide compounds having the formula: ##STR23## wherein R is a divalent aromatic radical having up to 70 carbon atoms, and polymers of such bismaleimide compounds.
Claim 17
Dependent Claim
80 words
The resin material of claim 10, wherein said resin has a thermal expansion coefficient of less than 1×10 -4 /° C., and wherein said curable composition further comprises 10 to 150 parts by weight, based on 100 parts by weight of said butadiene polymer, of at least one modifier selected from the group consisting of bismaleimide compounds having the formula: ##STR24## wherein R is a divalent aromatic radical having up to 70 carbon atoms, and polymers of such bismaleimide compounds.
Claim 18
Dependent Claim
35 words
The resin material of claim 13, wherein said modifier is present in said curable composition in an amount of 30 to 100 parts by weight based on 100 parts by weight of said butadiene polymer.
Claim 19
Dependent Claim
35 words
The resin material of claim 14, wherein said modifier is present in said curable composition in an amount of 30 to 100 parts by weight based on 100 parts by weight of said butadiene polymer.
Claim 20
Dependent Claim
35 words
The resin material of claim 15, wherein said modifier is present in said curable composition in an amount of 30 to 100 parts by weight based on 100 parts by weight of said butadiene polymer.
Claim 21
Dependent Claim
58 words
The composition of claim 2 comprising 10 to 150 parts by weight, based on 100 parts by weight of said butadiene polymer, of at least one modifier selected from the group consisting of bismaleimide compounds having the formula: ##STR25## wherein R is a divalent aromatic radical having up to 70 carbon atoms, and polymers of such bismaleimide compounds.
Claim 22
Dependent Claim
58 words
The composition of claim 3 comprising 10 to 150 parts by weight, based on 100 parts by weight of said butadiene polymer, of at least one modifier selected from the group consisting of bismaleimide compounds having the formula: ##STR26## wherein R is a divalent aromatic radical having up to 70 carbon atoms, and polymers of such bismaleimide compounds.
Claim 23
Dependent Claim
58 words
The composition of claim 4 comprising 10 to 150 parts by weight, based on 100 parts by weight of said butadiene polymer, of at least one modifier selected from the group consisting of bismaleimide compounds having the formula: ##STR27## wherein R is a divalent aromatic radical having up to 70 carbon atoms, and polymers of such bismaleimide compounds.
Claim 24
Dependent Claim
30 words
The composition of claim 19, wherein said modifier is present in an amount from 30 to 100 parts by weight based on 100 parts by weight of said butadiene polymer.
Claim 25
Dependent Claim
30 words
The composition of claim 20, wherein said modifier is present in an amount from 30 to 100 parts by weight based on 100 parts by weight of said butadiene polymer.
Claim 26
Dependent Claim
30 words
The composition of claim 21, wherein said modifier is present in an amount from 30 to 100 parts by weight based on 100 parts by weight of said butadiene polymer.
Claim 27
Dependent Claim
59 words
The composition in accordance with claims 6, 22, 23 or 24 wherein said modifier is selected from the group consisting of bismaleimide compounds having the formula: ##STR28## wherein R' is a divalent aromatic radical selected from the group consisting of ##STR29## wherein c is an integer from 0 through 5, and at least one polymer of such bismaleimide compounds.
Claim 28
Dependent Claim
57 words
The resin material in accordance with claim 12, 16, 17 or 18 wherein said modifier is selected from the group consisting of bismaleimide compounds having the formula: ##STR30## wherein R' represents a divalent aromatic radical selected from the group consisting of ##STR31## wherein c is an integer from 0 through 5, and polymers of such bismaleimide compounds.
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) | 1984-05-18 | 1984-11-17 | 1985-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-05-18 | 1988-11-17 | 1989-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-05-18 | 1992-11-17 | 1993-05-19 | $7700.00 | Window Closed / Lapsed |