Patent US4698242A successfully refreshed from Google Patents.
US4698242A
Expired / Lapsed
US
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Thermoplastic elastic adhesive containing polyether block amides
Assignee: Ingredion Inc
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Filing: 1986-07-30
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Granted: 1987-10-06
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Expires: 2006-07-30
Abstract
Abstract The invention is directed to thermoplastic hot melt adhesive compositions which function as elastic bands for disposable items.
Inventors
- 👤 Catherine E. Salerno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:18
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/45; A61F13/49; A61F13/49007; A61F13/49009; A61F13/4902; C; C08; C08L; C08L77/00; C08L77/12; C09; C09J; C09J153/00; C09J153/02; C08L2666/00; C08L2666/02
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
174 words
A method for imparting elongation resistant gathers to portions of a generally non-elastomeric film, or web substrate which comprises contacting a surface of the substrate with a molten band of a self-adhering elastic composition comprising: (a) from 35 to 75% by weight of a rubbery block copolymer containing a rubbery polyisoprene midblock portion and a plurality of crystaline poly (vinylarene) endblocks wherein the poly(vinylarene) portion constitute from 17 to 75% by weight of the copolymers; (b) from 10 to 45% by weight of a tackifying resin selected from the group consisting of polyterpene resins having a softening point, as determined by ASTM method E28 58T, of from about 60° to 140° C.; phenolic-modified terpene resins; aliphatic petroleum hydrocarbon resins having a Ball and Ring softening point of from about 60° to 140° C.; and hydrogenated copolymers of styrene and alpha-methyl styrene having a softening point of from 78° to 125° C.; (c) from 5 to 25l % by weight of polyether ester amide; and (d) from 0.2 to 2% by weight of an antioxidant.
Claim 2
Independent Claim
174 words
A method for imparting elongation resistant gathers to portions of a generally non-elastomeric film, or web substrate which comprises contacting a surface of the substrate with a molten band of a self-adhering elastic composition comprising: (a) from 35 to 75% by weight of a rubbery block copolymer containing a rubbery polyisoprene midblock portion and a plurality of crystaline poly (vinylarene) endblocks wherein the poly(vinylarene) portion constitute from 17 to 75% by weight of the copolymers; (b) from 10 to 45% by weight of a tackifying resin selected from the group consisting of polyterpene resins having a softening point, as determined by ASTM method E28 58T, of from about 60° to 140° C.; phenolic-modified terpene resins; aliphatic petroleum hydrocarbon resins having a Ball and Ring softening point of from about 60° to 140° C.; and hydrogenated copolymers of styrene and alpha-methyl styrene having a softening point of from 78° to 125° C.; (c) from 5 to 25l % by weight of polyether ester amide; and (d) from 0.2 to 2% by weight of an antioxidant.
Claim 3
Dependent Claim
15 words
The method of claim 1 wherein the block copolymer is a polystyrene polyiosprene polystyrene copolymer.
Claim 4
Dependent Claim
19 words
The method of claim 2 wherein the polystyrene portion comprises at least 22% by weight of the block copolymer.
Claim 5
Dependent Claim
17 words
The method of claim 3 wherein the polystyrene portion comprises approximately 22% by weight of the copolymer.
Claim 6
Dependent Claim
77 words
The method of claim 1 wherein the polyether ester amide is a sequence copolycondensate containing chains consisting of recurrent units with the formula: ##STR2## where: A is the polyamide sequence resulting from the loss of two carboxylic functions from the dicarboxylic polyamide, B is the polyoxyalkylene glycol sequence resulting from the loss of the two hydroxylated groups at the chain-ends of the polyalkylene glycol, and n is the number of recurrent units forming the sequence copolycondensate chain.
Claim 7
Dependent Claim
30 words
The method of claim 3 wherein the polyether ester amide is characterized by a melting point of 120° C., a shore hardness of 55D and a specific gravity of 1.06.
Claim 8
Dependent Claim
23 words
The method of claim 1 wherein the tackifying resin is a synthetic polyterpene resin having a softening point of 60 to 140° C.
Claim 9
Dependent Claim
24 words
The method of claim 1 wherein the polyether ester amide is present in an amount of 10 to 20% by weight of the adhesive.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-10-05 | 1991-04-06 | 1991-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-10-05 | 1995-04-06 | 1995-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-10-05 | 1999-04-06 | 1999-10-06 | $7700.00 | Window Closed / Lapsed |