Patent US4728707A successfully refreshed from Google Patents.
US4728707A
Expired / Lapsed
US
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Water- and oil-repellent
Assignee: Daikin Industries Ltd
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Filing: 1986-03-12
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Granted: 1988-03-01
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Expires: 2006-03-12
Abstract
Abstract A water- and oil-repellent of a copolymer which comprises repeating units derived from (a) a monomeric compound having at least a perfluoroalkyl or perfluoroalkenyl group and an acrylate or methacrylate group and (b) a methacrylate, a homopolymer of which has a glass transition temperature of not lower than 115 DEG C., which has good resistance to dry cleaning and resistance to slippage.
Inventors
- 👤 Yoshio Amimoto
- 👤 Hirokazu Aoyama
- 👤 Akira Chida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:41
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/21; D06M15/263; C; C08; C08F; C08F220/00; C08F220/02; C08F220/10; C08F220/22; C08F220/12; C08F220/16; C08F220/18; C08F220/1811; D06M15/277
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
119 words
A water- and oil-repellent copolymer, comprising: (a) at least one monomeric compound selected from the group consisting of: ##STR3## wherein R f is a C 3 -C 21 perfluoroalkyl or perfluoroalkenyl group; R 1 is a hydrogen atom or a C 1 -C 10 alkyl group; R 2 is a C 1 -C 10 alkylene group; R 3 is a hydrogen atom or a methyl group; n is an integer of 1 to 10; and (b) 5 to 50% by weight, based on the total weight of the copolymer, of a methacrylate selected from the group consisting of isobornyl methacrylate and 4-cyanophenyl methacrylate, a homopolymer of which has a glass transition temperature (Tg) of not lower than 115° C.
Claim 2
Dependent Claim
119 words
A water- and oil-repellent copolymer, comprising: (a) at least one monomeric compound selected from the group consisting of: ##STR3## wherein R f is a C 3 -C 21 perfluoroalkyl or perfluoroalkenyl group; R 1 is a hydrogen atom or a C 1 -C 10 alkyl group; R 2 is a C 1 -C 10 alkylene group; R 3 is a hydrogen atom or a methyl group; n is an integer of 1 to 10; and (b) 5 to 50% by weight, based on the total weight of the copolymer, of a methacrylate selected from the group consisting of isobornyl methacrylate and 4-cyanophenyl methacrylate, a homopolymer of which has a glass transition temperature (Tg) of not lower than 115° C.
Claim 3
Dependent Claim
63 words
A water- and oil-repellent copolymer, comprising: (a) at least one monomeric compound selected from the group consisting of: ##STR4## (b) 5 to 50% by weight, based on the total weight of the copolymer, of a methacrylate selected from the group consisting of isobornyl methacrylate and 4-cyanophenyl methacrylate, a homopolymer of which has a glass transition temperature (Tg) of not lower than 115° C.
Claim 4
Dependent Claim
63 words
A water- and oil-repellent copolymer, comprising: (a) at least one monomeric compound selected from the group consisting of: ##STR4## (b) 5 to 50% by weight, based on the total weight of the copolymer, of a methacrylate selected from the group consisting of isobornyl methacrylate and 4-cyanophenyl methacrylate, a homopolymer of which has a glass transition temperature (Tg) of not lower than 115° C.
Claim 5
Dependent Claim
29 words
The water- and oil-repellent according to claim 1, wherein the methacrylate (b) is one wherein a homopolymer of which has a glass transition temperature not lower than 130° C.
Claim 6
Dependent Claim
26 words
The water- and oil-repellent copolymer according to claim 1, wherein the content of said monomeric compound (a) in the copolymer is at least 25% by weight.
Claim 7
Dependent Claim
21 words
The water- and oil-repellent copolymer according to claim 1, wherein said copolymer further comprises at least one other copolymerizable vinyl monomer.
Claim 8
Dependent Claim
27 words
The water- and oil-repellent copolymer according to claim 1, wherein component (b) has a sufficiently large molecular weight so that Tg is independent of the molecular weight.
Claim 9
Dependent Claim
26 words
The water- and oil-repellent copolymer according to claim 2, wherein the content of said monomeric compound (a) in the copolymer is at least 25% by weight.
Claim 10
Dependent Claim
21 words
The water- and oil-repellent copolymer according to claim 2, wherein said copolymer further comprises at least one other copolymerizable vinyl monomer.
Claim 11
Dependent Claim
30 words
The water- and oil-repellent copolymer according to claim 2, wherein the methacrylate (b) is one wherein a homopolymer of which has a glass transition temperature not lower than 130° C.
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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) | 1991-03-01 | 1991-08-31 | 1992-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-03-01 | 1995-08-31 | 1996-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-03-01 | 1999-08-31 | 2000-03-01 | $7700.00 | Window Closed / Lapsed |