US5863657A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adhesive for bonding together vinylidene fluoride resin and substrate
Assignee: Central Glass Co Ltd
•
Filing: 1995-12-27
•
Granted: 1999-01-26
•
Expires: 2015-12-27
Abstract
Abstract An adhesive for bonding together a first substrate made of vinylidene fluoride resin and a second substrate comprises an elastic fluorohydrocarbon resin, a polyisocyanate, and an organic solvent. This elastic fluorohydrocarbon resin is obtained by graft copolymerization of a fluorine-containing copolymer with a vinylidene fluoride monomer. This copolymer is prepared by copolymerizing at least one first fluorine-containing monomer with at least one unsaturated monomer that has peroxy bond. The adhesive itself is superior in durability, and bond strength between the first and second substrates is also superior.
Inventors
- 👤 Chikashi Kawashima
- 👤 Katunori Kawamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:02
CPC Classifications
B; B32; B32B; B32B7/00; B32B7/04; B32B7/12; B32B27/00; B32B27/06; B32B27/08; B32B27/30; B32B27/304; C; C09; C09J; C09J127/00; C09J127/02; C09J127/12; C09J127/16; C09J151/00; C09J151/003; C08; C08L; C08L2666/00; C08L2666/28; C08L2666/36; Y; Y10; Y10T; Y10T428/00; Y10T428/28; Y10T428/2852; Y10T428/2878; Y10T428/31504; Y10T428/3154; Y10T428/31544
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
194 words
An adhesive adapted for bonding together a first substrate made of a vinylidene fluoride resin and a second substrate, said adhesive comprising: an elastic fluorohydrocarbon resin, wherein said elastic fluorohydrocarbon resin is prepared by a method comprising the steps of: (a) copolymerizing at least one first fluorine-containing monomer with at least one second monomer having (i) at least one double bond and (ii) at least one peroxy bond, said at least one first fluorine-containing monomer being selected from the group consisting of a combination of vinylidene fluoride and hexafluorotpropvlene, a combination of vinylidene fluoride, hexafluoropropylene and tetrafluoroethylene, and a combination of vinylidene fluoride and chlorotrifluoroethylene, thereby to produce a fluorine-containing copolymer having a glass transition temperature below room temperature and a peroxy bond capable of decomposition during graft copolymerization; (b) providing a dispersion of said fluorine-containing copolymer in a liquid medium; (c) introducing into said dispersion a third monomer which is vinylidene fluoride; and (d) polymerizing said vinylidene fluoride in said dispersion so as to cause decomposition of said peroxy bond, thereby causing at least a portion of said vinylidene fluoride to undergo graft copolymerization with said copolymer; a polyisocyanate; and an organic solvent.
Claim 2
Dependent Claim
194 words
An adhesive adapted for bonding together a first substrate made of a vinylidene fluoride resin and a second substrate, said adhesive comprising: an elastic fluorohydrocarbon resin, wherein said elastic fluorohydrocarbon resin is prepared by a method comprising the steps of: (a) copolymerizing at least one first fluorine-containing monomer with at least one second monomer having (i) at least one double bond and (ii) at least one peroxy bond, said at least one first fluorine-containing monomer being selected from the group consisting of a combination of vinylidene fluoride and hexafluorotpropvlene, a combination of vinylidene fluoride, hexafluoropropylene and tetrafluoroethylene, and a combination of vinylidene fluoride and chlorotrifluoroethylene, thereby to produce a fluorine-containing copolymer having a glass transition temperature below room temperature and a peroxy bond capable of decomposition during graft copolymerization; (b) providing a dispersion of said fluorine-containing copolymer in a liquid medium; (c) introducing into said dispersion a third monomer which is vinylidene fluoride; and (d) polymerizing said vinylidene fluoride in said dispersion so as to cause decomposition of said peroxy bond, thereby causing at least a portion of said vinylidene fluoride to undergo graft copolymerization with said copolymer; a polyisocyanate; and an organic solvent.
Claim 3
Dependent Claim
95 words
An adhesive according to claim 1, wherein said adhesive is bonded between a first substrate made of a vinylidene fluoride resin and a second substrate, wherein said vinylidene fluoride resin comprises a member selected from the group consisting of a polyvinylidene fluoride and a copolymer vinylidene fluoride and at least one other monomer, wherein if said at least one other monomer is present, the vinylidene fluoride resin has a molar ratio of vinylidene fluoride units to at least one other structural unit derived from said at least one other monomer of from 50:50 to 100:0.
Claim 4
Dependent Claim
26 words
An adhesive according to claim 2, wherein said at least one other monomer is selected from the group consisting of tetrafluoroethylene, hexafluoropropylene, chlorotrifluoroethylene and hexafluoro acetone.
Claim 5
Dependent Claim
27 words
An adhesive according to claim 1, wherein said adhesive is bonded between a first substrate and a second substrate, and said second substrate has thereon active hydrogen.
Claim 6
Dependent Claim
12 words
An adhesive according to claim 1, wherein said organic solvent comprises N,N-dimethylformamide.
Claim 7
Dependent Claim
27 words
An adhesive according to claim 5, wherein said organic solvent is a solvent mixture of N,N-dimethylformamide and at least one other solvent selected from ketones and esters.
Claim 8
Dependent Claim
20 words
An adhesive according to claim 1, wherein said polyisocyanate is hexamethylene diisocyanate or an isocyanurate derived from said hexamethylene diisocyanate.
Claim 9
Dependent Claim
37 words
An adhesive according to claim 1, wherein said adhesive is bonded between a first substrate and a second substrate, and said second substrate is coated with a primer such that said second substrate has thereon active hydrogen.
Claim 10
Dependent Claim
14 words
An adhesive according to claim 8, wherein said primer comprises a silane coupling, agent.
Claim 11
Dependent Claim
30 words
An adhesive according to claim 1, wherein said at least one second monomer is a member selected from the group consisting of an unsaturated peroxy ester and an unsaturated peroxycarbonate.
Claim 12
Dependent Claim
27 words
An adhesive according to claim 1, wherein the ratio of said fluorine-containing copolymer to said third monomer is within a range from 30:70 to 95:5 by weight.
Claim 13
Dependent Claim
27 words
An adhesive according to claim 1, wherein the ratio of said polyisocyanate to said elastic fluorohydrocarbon resin is within a range from 0.3:100 to 50:100 by weight.
Claim 14
Dependent Claim
27 words
An adhesive according to claim 12, wherein the ratio of said polyisocyanate to said elastic fluorohydrocarbon resin is within a range from 0.5:100 to 30:100 by weight.
Claim 15
Dependent Claim
58 words
An adhesive according to claim 1, wherein said polyisocyanate is selected from the group consisting of ethylene diisocyanate, tetramethylene diisocyanate, hexamethylene diisocyanate, dodecamethylene diisocyanate, 1,6,11-undecane triisocyanate, 2,2,4-trimethylhexane diisocyanate, 2,6-diisocyanate methylcaproate, bis(2-isocyanate ethyl) fumarate, bis(2-isocyanate ethyl) carbonate, 2-isocyanate ethyl-2,6-diisocyanate hexanoate, isophorone diisocyanate, 4,4'-diphenylmethane diisocyanate, dicyclohexylmethane diisocyanate, cyclohexylene diisocyanate, methylcyclohexylene diisocyanate, bis(2-isocyanate ethyl)-4-cyclohexene-1,2-dicarboxylate, xylylene diisocyanate, diethylbenzene diisocyanate and tolylene diisocyanate.
Claim 16
Dependent Claim
29 words
An adhesive according to claim 1, wherein said organic solvent comprises a first solvent which is a solvent selected from the group consisting of N,N-dimethylaceto-amide, N-methylpyrrolidone and mixtures thereof.
Claim 17
Dependent Claim
34 words
An adhesive according to claim 15, wherein said organic solvent is a solvent mixture of said first solvent and a second solvent selected from the group consisting of ketones and esters and mixtures thereof.
Claim 18
Dependent Claim
29 words
A laminate comprising: a first substrate made of a vinylidene fluoride resin; and a second substrate which is stuck to said first substrate by an adhesive of claim 1.
References Cited (Backward Citations)
US4317861A
Cited
US4472557A
Cited
US4612351A
Cited
EP0144147A1
Cited
US4549921A
Cited
US4617350A
Cited
US4861835A
Cited
JPS6422547A
Cited
US5229461A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-01-25 | 2002-07-27 | 2003-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-01-25 | 2006-07-27 | 2007-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-01-25 | 2010-07-27 | 2011-01-26 | $7700.00 | Window Closed / Lapsed |