Patent US3616166A successfully refreshed from Google Patents.
US3616166A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adhesive composition and bonded nonwoven fabrics
Assignee: Rohm and Haas Co
•
Filing: 1969-04-01
•
Granted: 1971-10-26
•
Expires: 1989-04-01
Abstract
Abstract This invention is concerned with adhesive compositions having special use as a binder for nonwoven fabrics and comprises a ''''polyblend,'''' that is an aqueous dispersion of two different polymers obtained by emulsion polymerization. The first component of the polyblend is a polymer of ethyl acrylate having relatively low molecular weight such as from about 150,000 up to 300,000 viscosity average. The other component is an addition polymer made by emulsion polymerization of ethylenically unsaturated monomers comprising one or more members which when homopolymerized tend to produce hard polymers so that the emulsion polymer is one having a minimum film forming temperature (MFT) of at least about 50* C.
Inventors
- 👤 Louis E Kelley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:18
CPC Classifications
C; C09; C09J; C09J133/00; C09J133/04; C09J133/06; C09J133/08; D; D04; D04H; D04H1/00; D04H1/40; D04H1/58; D04H1/587; D04H1/64; D04H1/66; C08; C08L; C08L2666/00; C08L2666/02; C08L2666/04; C09J2301/00; C09J2301/30; C09J2301/302; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24851; Y10T428/31504; Y10T428/31855; Y10T442/00; Y10T442/20; Y10T442/2738
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
86 words
A composition as defined in claim 1 in which (1) is a linear copolymer of ethyl acrylate with (a) 0 to 30 percent by weight of methyl acrylate, a (C3-C8) alkyl acrylate or a (C2-C8) alkyl methacrylate, (b) 0 to 5 percent by weight of vinyl acetate, methyl methacrylate, styrene, vinyltoluene, vinyl chloride, vinylidene chloride, or acrylonitrile, (c) 0 to 5 percent by weight of an Alpha , Beta -monoethylenically unsaturated acid, and 0 to 1 percent by weight of acrylamide, N-methylolacrylamide, methacrylamide, or N-methylol methacrylamide.
Claim 2
Dependent Claim
115 words
A nonwoven fabric bonded in at least a portion of its area with a compositIon comprising (1) a linear polymer of ethyl acrylate having an MFT not above room temperature and a molecular weight of about 150,000 to 300,000 viscosity average obtained by emulsion polymerization using 0.2 to 5 percent by weight, based on the total monomer weight, of a chain-transfer agent and (2) a polymer containing polymerized units of vinyl chloride, methyl methacrylate, styrene, vinyltoluene, or acrylonitrile which polymer has an MFT of at least about 50* C., the polymers being present in a proportion of 60 to 90 percent by weight of (1) and 40 to 10 percent by weight of (2) respectively.
Claim 3
Dependent Claim
86 words
A nonwoven fabric according to claim 3 in which (1) is a linear copolymer of ethyl acrylate with (a) 0 to 30 percent by weight of methyl acrylate, a (C3-C8) alkyl acrylate or a (C2-C8) alkyl methacrylate, (b) 0 to 5 percent by weight of vinyl acetate, methyl methacrylate, styrene, vinyltoluene, vinyl chloride, vinylidene chloride, or acrylonitrile, (c) 0 to 5 percent by weight of an Alpha , Beta -monoethylenically unsaturated acid, and 0 to 1 percent by weight of acrylamide, N-methylolacrylamide, methacrylamide, or N-methylol methacrylamide.
Claim 4
Dependent Claim
101 words
A nonwoven fabric according to claim 3 in which (1) is a linear copolymer of ethyl acrylate with (a) 0 to 30 percent by weight of methyl acrylate, a (C3-C8) alkyl acrylate of a (C2-C8) alkyl methacrylate, (b) 0 to 5 percent by weight of vinyl acetate, methyl methacrylate, styrene, vinyltoluene, vinyl chloride, vinylidene chloride, or acrylonitrile, (c) 0 to 5 percent by weight of an Alpha , Beta -monoethylenically unsaturated acid, and 0 to 1 percent by weight of acrylamide, methacrylamide, or N-methylol acrylamide and in which (2) is a polymer of vinyl chloride, methyl methacrylate, styrene, vinyltoluene, or acrylonitrile.
Claim 5
Dependent Claim
145 words
A nonwoven fabric bonded in at least a portion of its area with a dried deposit of a composition comprising (1) a linear polymer of ethyl acrylate having an MFT not above room temperature and a molecular weight of about 150,000 to 300,000 viscosity average obtained by emulsion polymerization using 0.2 to 5 percent by weight, based on the total monomer weight, of a chain-transfer agent and (2) a polymer containing polymerized units of vinyl chloride, methyl methacrylate, styrene, vinyltoluene, or acrylonitrile which polymer has an MFT of at least about 50* C., the polymers being present in a proportion of 60 to 90 percent by weight of (1) and 40 to 10 percent by weight of (2) respectively, said fabric being in the form of a sleeve wherein a longitudinal edge is overlapped on and heat-sealed to the opposite longitudinal edge of the fabric.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-25 | 1975-04-26 | 1975-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-25 | 1979-04-26 | 1979-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-25 | 1983-04-26 | 1983-10-26 | $7700.00 | Window Closed / Lapsed |