US4698242A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoplastic elastic adhesive containing polyether block amides
Assignee: Ingredion Inc
•
Filing: 1986-07-30
•
Granted: 1987-10-06
•
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 12:11
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.
References Cited (Backward Citations)
US4230838A
Cited
US4252920A
Cited
US4208493A
Cited
US4259220A
Cited
US4543099A
Cited
US4418123A
Cited
US4242470A
Cited
US4361680A
Cited
US4505056A
Cited
FR2523143A1
Cited
US4419494A
Cited
US4411954A
Cited
FR2533577A1
Cited
US4610745A
Cited
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 |