US4053440A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Latex compositions sensitive to heat
Assignee: Individual
•
Filing: 1975-08-01
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Granted: 1977-10-11
•
Expires: 1995-08-01
Abstract
Abstract A latex composition sensitive to heat, particularly for use as a binder for nonwoven fabrics, comprises 0.05 to 5 parts by weight per 100 parts by weight of a latex (as the dry solids) of a urethane-oxyalkylene copolymer having the formula ##STR1## IN WHICH R represents an aliphatic group and/or an aromatic group which can contain a biuret group, a urethane group or isocyanate groups, R' is hydrogen or a lower alkyl radical having 1 to 8 carbon atoms (straight or branch chain), an aryl radical or an alkylaryl radical, x is 0 or 1, y is always greater than 2 and x+y is also always greater than 2; n has a value ranging between 2 and 4 inclusive while p has a value at least equal to 5.
Inventors
- 👤 Jean Claude Bonnet
- 👤 Alain Ribba
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 00:43
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/2805; C08G18/2815; C08G18/283; C08C; C08C1/00; C08C1/14; C08C1/145; C08L; C08L21/00; C08L21/02
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
116 words
A latex composition sensitive to heat consisting essentially of a natural or synthetic latex and 0.5 to 5 parts by weight per 100 parts by weight of dry solids of the latex of a urethane-oxylalkylene copolymer having the formula: ##STR13## in which R is an aliphatic or aromatic structure which can contain biuret groups, urethane groups or isocyanate groups, R' is selected from the group which consists of hydrogen, lower alkyl having 1 to 8 carbon atoms and of straight or branched chain, aryl and alkylaryl, x is 0 or 1, y is always greater than 2, n has a value of 2 to 4 inclusively, and p has a value at least equal to 5.
Claim 2
Dependent Claim
116 words
A latex composition sensitive to heat consisting essentially of a natural or synthetic latex and 0.5 to 5 parts by weight per 100 parts by weight of dry solids of the latex of a urethane-oxylalkylene copolymer having the formula: ##STR13## in which R is an aliphatic or aromatic structure which can contain biuret groups, urethane groups or isocyanate groups, R' is selected from the group which consists of hydrogen, lower alkyl having 1 to 8 carbon atoms and of straight or branched chain, aryl and alkylaryl, x is 0 or 1, y is always greater than 2, n has a value of 2 to 4 inclusively, and p has a value at least equal to 5.
Claim 3
Dependent Claim
27 words
The composition defined in claim 1 wherein R is a radical having the formula: ##STR14## in which d is between 2.4 and 2.8 and R' is butyl.
Claim 4
Dependent Claim
21 words
The composition defined in claim 1 wherein R is a radical having the formula: ##STR15## and in which R' is butyl.
Claim 5
Dependent Claim
23 words
The composition defined in claim 1 wherein R is a radical having the formula: ##STR16## and in which R' is the butyl radical.
Claim 6
Dependent Claim
41 words
The composition defined in claim 1 wherein said latex is selected from the group consisting of natural rubber, the homopolymers and copolymers of vinylic monomers, the homopolymers and copolymers of acrylic monomers, and the homopolymers and copolymers of olefins and diolefins.
References Cited (Backward Citations)
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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) | 1980-10-10 | 1981-04-11 | 1981-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-10 | 1985-04-11 | 1985-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-10 | 1989-04-11 | 1989-10-11 | $7700.00 | Window Closed / Lapsed |