US4481250A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vinyl acetate-ethylene binder composition having good wet tensile strength and low heat seal temperature for nonwoven products
Assignee: Air Products and Chemicals Inc
•
Filing: 1983-07-29
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Granted: 1984-11-06
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Expires: 2003-07-29
Abstract
Abstract An emulsion composition is disclosed which provides a binder having good wet tensile strength and low heat seal temperature for nonwoven products which comprises an aqueous dispersion of a mixture consisting essentially of 50 to 95 wt % of a vinyl acetate-ethylene copolymer and 5 to 50 wt % of a vinyl acetate-ethylene-crosslinking monomer copolymer.
Inventors
- 👤 Gerald R. Cook
- 👤 Phillip A. Mango
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:30
CPC Classifications
C; C08; C08L; C08L31/00; C08L31/02; C08L31/04; D; D04; D04H; D04H1/00; D04H1/40; D04H1/58; D04H1/587; D04H1/64; C08L2205/00; C08L2205/04; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249924; Y10T428/24994; Y10T442/00; Y10T442/20; Y10T442/2738
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
77 words
An emulsion composition providing a binder having good wet tensile strength and heat sealability for nonwoven products comprising an aqueous dispersion of a mixture consisting essentially of (a) 50 to 95 wt% copolymer A containing 60 to 95 wt% vinyl acetate and 5 to 40 wt% ethylene, and (b) 5 to 50 wt% copolymer B containing 60 to 95 wt% vinyl acetate, 5 to 40 wt% ethylene and up to about 10 wt% crosslinking mono-olefinically unsaturated monomer.
Claim 2
Dependent Claim
77 words
An emulsion composition providing a binder having good wet tensile strength and heat sealability for nonwoven products comprising an aqueous dispersion of a mixture consisting essentially of (a) 50 to 95 wt% copolymer A containing 60 to 95 wt% vinyl acetate and 5 to 40 wt% ethylene, and (b) 5 to 50 wt% copolymer B containing 60 to 95 wt% vinyl acetate, 5 to 40 wt% ethylene and up to about 10 wt% crosslinking mono-olefinically unsaturated monomer.
Claim 3
Dependent Claim
25 words
The composition of claim 1 in which the mixture consists essentially of 65 to 90 wt% copolymer A and 10 to 35 wt% copolymer B.
Claim 4
Dependent Claim
58 words
The composition of claim 1 in which the vinyl acetate content is 75 to 85 wt% and the ethylene content is 15 to 25 wt% of copolymer A, and the vinyl acetate is 70 to 80 wt%, the ethylene is 15 to 25 wt% and the crosslinking mono-olefinically unsaturated monomer is 4 to 8 wt% of copolymer B.
Claim 5
Dependent Claim
58 words
The composition of claim 2 in which the vinyl acetate content is 75 to 85 wt% and the ethylene content is 15 to 25 wt% of copolymer A, and the vinyl acetate is 70 to 80 wt%, the ethylene is 15 to 25 wt% and the crosslinking mono-olefinically unsaturated monomer is 4 to 8 wt% of copolymer B.
Claim 6
Dependent Claim
32 words
The composition of claim 1 in which the crosslinking olefinically unsaturated monomer is N-methylol acrylamide, N-methylol methacrylamide, the lower alkyl ethers of N-methylol acrylamide or N-methylol methacrylamide, acrylamide, methacrylamide, or acrylic acid.
Claim 7
Dependent Claim
15 words
The composition of claim 4 in which the crosslinking mono-olefinically unsaturated monomer is 4-6 wt%.
Claim 8
Dependent Claim
78 words
A nonwoven product comprising a web of fibers bonded together with a binder deposited from an emulsion composition comprising an aqueous dispersion of a mixture consisting essentially of (a) 50 to 95 wt% copolymer A containing 60 to 95 wt% vinyl acetate and 50 to 40 wt% ethylene, and (b) 5 to 50 wt% copolymer B containing 60 to 95 wt% vinyl acetate, 5 to 40 wt% ethylene and up to about 10 wt% crosslinking mono-olefinically unsaturated monomer.
Claim 9
Dependent Claim
78 words
A nonwoven product comprising a web of fibers bonded together with a binder deposited from an emulsion composition comprising an aqueous dispersion of a mixture consisting essentially of (a) 50 to 95 wt% copolymer A containing 60 to 95 wt% vinyl acetate and 50 to 40 wt% ethylene, and (b) 5 to 50 wt% copolymer B containing 60 to 95 wt% vinyl acetate, 5 to 40 wt% ethylene and up to about 10 wt% crosslinking mono-olefinically unsaturated monomer.
Claim 10
Dependent Claim
26 words
The nonwoven product of claim 7 in which the mixture consists essentially of 65 to 90 wt% copolymer A and 10 to 35 wt% copolymer B.
Claim 11
Dependent Claim
59 words
The nonwoven product of claim 7 in which the vinyl acetate content is 75 to 85 wt% and the ethylene content is 15 to 25 wt% in copolymer A and the vinyl acetate is 70 to 80 wt%, the ethylene is 15 to 25 wt%, and the crosslinking mono-olefinically unsaturated monomer is 4 to 8 wt% of copolymer B.
Claim 12
Dependent Claim
59 words
The nonwoven product of claim 8 in which the vinyl acetate content is 75 to 85 wt% and the ethylene content is 15 to 25 wt% in copolymer A and the vinyl acetate is 70 to 80 wt%, the ethylene is 15 to 25 wt%, and the crosslinking mono-olefinically unsaturated monomer is 4 to 8 wt% of copolymer B.
Claim 13
Dependent Claim
33 words
The nonwoven product of claim 7 in which the crosslinking mono-olefinically unsaturated monomer is N-methylol acrylamide, N-methylol methacrylamide, the lower alkyl ethers of N-methylol acrylamide or N-methylol methacrylamide, acrylamide, methacrylamide, or acrylic acid.
Claim 14
Dependent Claim
16 words
The nonwoven product of claim 10 in which the crosslinking olefinically unsaturated monomer is 4-6 wt%.
Claim 15
Dependent Claim
75 words
An emulsion composition providing a binder having good wet tensile strength and heat sealability for nonwoven products comprising an aqueous dispersion of a mixture consisting essentially of (a) 50 to 95 wt% copolymer A containing 60 to 95 wt% vinyl acetate and 5 to 40 wt% ethylene, and (b) 5 to 50 wt% copolymer B containing 60 to 95 wt% vinyl acetate, 5 to 40 wt% ethylene and up to about 10 wt% N-methylol acrylamide.
Claim 16
Dependent Claim
75 words
An emulsion composition providing a binder having good wet tensile strength and heat sealability for nonwoven products comprising an aqueous dispersion of a mixture consisting essentially of (a) 50 to 95 wt% copolymer A containing 60 to 95 wt% vinyl acetate and 5 to 40 wt% ethylene, and (b) 5 to 50 wt% copolymer B containing 60 to 95 wt% vinyl acetate, 5 to 40 wt% ethylene and up to about 10 wt% N-methylol acrylamide.
Claim 17
Dependent Claim
25 words
The composition of claim 13 in which the mixture consists essentially of 65 to 90 wt% copolymer A and 10 to 35 wt% copolymer B.
Claim 18
Dependent Claim
53 words
The composition of claim 14 in which the vinyl acetate is 75 to 85 wt% and the ethylene is 15 to 25 wt% in copolymer A and the vinyl acetate is 70 to 80 wt%, ethylene is 15 to 25 wt% and the N-methylol acrylamide is 4 to 6 wt% of copolymer B.
Claim 19
Dependent Claim
53 words
The composition of claim 13 in which the vinyl acetate is 75 to 85 wt% and the ethylene is 15 to 25 wt% in copolymer A and the vinyl acetate is 70 to 80 wt%, ethylene is 15 to 25 wt% and the N-methylol acrylamide is 4 to 6 wt% of copolymer B.
Claim 20
Dependent Claim
20 words
A nonwoven product comprising a web of fibers bonded together with a binder deposited from the emulsion of claim 13.
Claim 21
Dependent Claim
20 words
A nonwoven product comprising a web of fibers bonded together with a binder deposited from the emulsion of claim 14.
Claim 22
Dependent Claim
20 words
A nonwoven product comprising a web of fibers bonded together with a binder deposited from the emulsion of claim 15.
Claim 23
Dependent Claim
20 words
A nonwoven product comprising a web of fibers bonded together with a binder deposited from the emulsion of claim 16.
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) | 1987-11-06 | 1988-05-07 | 1988-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-11-06 | 1992-05-07 | 1992-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-11-06 | 1996-05-07 | 1996-11-06 | $7700.00 | Window Closed / Lapsed |