US4935467A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymeric blends
Assignee: Raychem Corp
•
Filing: 1988-03-11
•
Granted: 1990-06-19
•
Expires: 2008-03-11
Abstract
Abstract Novel compositions comprise a blend of (A) a thermoplastic polymer selected from copolymers of ethylene and tetrafluoroethylene, and thermoplastic vinylidene fluoride polymers; and (B) a thermoplastic elastomer having (i) at least one elastomeric segment comprising (a) vinylidene fluoride, hexa- or pentafluoropropylene, and tetrafluoroethylene repeating units in a mole ratio of 45-90:5-50:0-35 or (b) perfluoro(alkyl vinyl ether), tetrafluoroethylene and vinylidene fluoride repeating units in a mole ratio of 15-75:0-85:0-85; and (ii) at least one nonelastomeric segment selected from segments comprising ethylene and tetrafluoroethylene repeating units in a mole ratio of 40-60:60-40, and segments comprising vinylidene fluoride, hexafluoropropylene and tetrafluoroethylene repeating units in a mole ratio of 0-100:0-50:0-100, with the proviso that if the thermoplastic polymer is a vinylidene fluoride polymer, the blend is crosslinked.
Inventors
- 👤 Tai C. Cheng
- 👤 Bruce A. Kaduk
- 👤 Ashok K. Mehan
- 👤 David D. Taft
- 👤 Carl J. Weber
- 👤 Steven C. Zingheim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:55
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/20; H01B1/24; C; C08; C08L; C08L23/00; C08L23/02; C08L23/04; C08L23/08; C08L27/00; C08L27/02; C08L27/12; C08L27/16; C08L27/18; C08L53/00; H01B1/22; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
148 words
A composition comprising a blend of: (A) A thermoplastic polymer selected from copolymers of ethylene, tetrafluoroethylene; and (B) a thermoplastic elastomer having (i) at least one elastomeric Segment comprising (a) vinylidene fluoride, hex- or pentafluoropropylene, and tetrafluoroethylene repeating units in a mole ratio of 45-90:5-50:0-35 or (b) perfluoro(alkyl vinyl ether), tetrafluoroethylene, and vinylidene fluoride repeating units in a mole ratio of 15-75:0-85; and (ii) at least one nonelastomeric segment selected from segments comprising ethylene and tetrafluoroethylene repeating units in a mole ratio of 40-60:6014 40, or segments comprising vinylidene fluoride, hexafluoropropylene and tetrafluoroethylene repeating units in a mole ratio of 0-100:0-50:0-100, the weight proportion of (i) to (ii) being about 5-95:95-5; wherein (A) is present in an amount of about 1 to about 99% by weight and (B) is present in an amount of about 99 to about 1% by weight, based on the weight of the blend.
Claim 2
Dependent Claim
148 words
A composition comprising a blend of: (A) A thermoplastic polymer selected from copolymers of ethylene, tetrafluoroethylene; and (B) a thermoplastic elastomer having (i) at least one elastomeric Segment comprising (a) vinylidene fluoride, hex- or pentafluoropropylene, and tetrafluoroethylene repeating units in a mole ratio of 45-90:5-50:0-35 or (b) perfluoro(alkyl vinyl ether), tetrafluoroethylene, and vinylidene fluoride repeating units in a mole ratio of 15-75:0-85; and (ii) at least one nonelastomeric segment selected from segments comprising ethylene and tetrafluoroethylene repeating units in a mole ratio of 40-60:6014 40, or segments comprising vinylidene fluoride, hexafluoropropylene and tetrafluoroethylene repeating units in a mole ratio of 0-100:0-50:0-100, the weight proportion of (i) to (ii) being about 5-95:95-5; wherein (A) is present in an amount of about 1 to about 99% by weight and (B) is present in an amount of about 99 to about 1% by weight, based on the weight of the blend.
Claim 3
Dependent Claim
134 words
A composition comprising a blend of: (A) a copolymer of ethylene, tetrafluoroethylene and a third monomer in the mole ratio of 40-60:15-50:0-35; and (B) a thermoplastic elastomer having (i) at least one elastomeric segment comprising (a) vinylidene fluoride, hexa- or pentafluoropropylene, and tetrafluoroethylene repeating units in a mole ratio of 45-90:5-50:0-35 or (b) perfluoro(alkyl vinyl ether), tetrafluoroethylene, and vinylidene fluoride repeat units in a mole ratio of 15-75:0-85:0-85; and (ii) at least one nonelastomeric segment comprising ethylene and tetrafluoroethylene repeating units in a mole ratio of 40-60:60-40, the weight proportion of (i) to (ii) being about 5-95:95-5; wherein (A) is present in an amount of about 1 to about 99% by weight and (B) is present in an amount of about 99 to about 1% by weight, based on the weight of the blend.
Claim 4
Dependent Claim
134 words
A composition comprising a blend of: (A) a copolymer of ethylene, tetrafluoroethylene and a third monomer in the mole ratio of 40-60:15-50:0-35; and (B) a thermoplastic elastomer having (i) at least one elastomeric segment comprising (a) vinylidene fluoride, hexa- or pentafluoropropylene, and tetrafluoroethylene repeating units in a mole ratio of 45-90:5-50:0-35 or (b) perfluoro(alkyl vinyl ether), tetrafluoroethylene, and vinylidene fluoride repeat units in a mole ratio of 15-75:0-85:0-85; and (ii) at least one nonelastomeric segment comprising ethylene and tetrafluoroethylene repeating units in a mole ratio of 40-60:60-40, the weight proportion of (i) to (ii) being about 5-95:95-5; wherein (A) is present in an amount of about 1 to about 99% by weight and (B) is present in an amount of about 99 to about 1% by weight, based on the weight of the blend.
Claim 5
Dependent Claim
40 words
A composition in accordance with claim 1 wherein (A) is present in an amount of about 5 to about 95% by weight and (B) is present in an amount of about 95 to about 5% by weight of the blend.
Claim 6
Dependent Claim
40 words
A composition in accordance with claim 1 wherein (A) is present in an amount of about 10 to about 70% by weight and (B) is present in an amount of about 90 to about 30% by weight of the blend.
Claim 7
Dependent Claim
25 words
A composition in accordance with claim 2 wherein the third monomer in thermoplastic polymer (A) is hexafluoropropylene; 3,3,3-trifluoropropylene-1; 2-trifluoromethyl-3,3,3-trifluoropropylene-1; or perfluoro (alkyl vinyl ether). pg,34
Claim 8
Dependent Claim
24 words
A composition in accordance with claim 2 wherein the nonelastomeric segment (B) (ii) further comprises hexafluoropropylene; 3,3,3-trifluororopropylene-1, 2-trifluoromethyl-3,3,3-trifluoropropylene-1; or perfluoro(alkyl vinyl ether) repeating units.
Claim 9
Dependent Claim
25 words
A composition in accordance with claim 2 wherein the elastomeric segment (Bi) comprises vinylidene fluoride, hexafluoropropylene and tetrafluoroethylene in a mole ratio of about 45-90:5-50:0-35.
Claim 10
Dependent Claim
24 words
A composition in accordance with claim 2 wherein said nonelastomeric segment (Bii) comprises ethylene, tetrafluoroethylene and hexafluoropropylene in a mole ratio of about 40-60:15-50:0-35.
Claim 11
Dependent Claim
13 words
A composition in accordance with claim 2 which further comprises a crosslinking agent.
Claim 12
Dependent Claim
34 words
A composition in accordance with claim 9 wherein said cross-linking agent is selected from the group consisting of triallyl cryanurate, triallyl isocyanurate, triallyl trimellitate, triallyl trimesate, tetrallyl pyromellitate, the diallyl ester of 1,1,3-trimethyl-5-carboxy-3(p-carboxyphenyl) indan.
Claim 13
Dependent Claim
11 words
A composition in accordance with claim 2 which has been cross-linked.
References Cited (Backward Citations)
US3864228A
Cited
US4200568A
Cited
US4094949A
Cited
US3987126A
Cited
US4158678A
Cited
US4115481A
Cited
JPS5941351A
Cited
JPS5962635A
Cited
EP0105433A1
Cited
US4487882A
Cited
US4560737A
Cited
US4530970A
Cited
EP0132834A2
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-06-18 | 1993-12-18 | 1994-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-06-18 | 1997-12-18 | 1998-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-06-18 | 2001-12-18 | 2002-06-19 | $7700.00 | Window Closed / Lapsed |