Patent US4735990A successfully refreshed from Google Patents.
US4735990A
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Aqueous resin emulsion
Assignee: Nitto Denko Corp
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Filing: 1986-09-25
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Granted: 1988-04-05
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Expires: 2006-09-25
Abstract
Abstract An aqueous resin emulsion is disclosed. The emulsion is obtained by emulsion copolymerizing a monomer mixture comprising (a) an acrylic acid fluoroalkyl ester derivative, (b) an acrylic acid derivative, and (c) a polyfunctional monomer for internal cross-linking, in an aqueous medium. The emulsion shows excellent polymerization stability in emulsion copolymerization for the preparation thereof and excellent dispersion stability in an aqueous medium.
Inventors
- 👤 Yasuo Kihara
- 👤 Kenjiro Mori
- 👤 Takashi Kawasaki
- 👤 Keiichi Ushiyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:40
CPC Classifications
C; C08; C08F; C08F220/00; C08F220/02; C08F220/10; C08F220/22
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
198 words
An aqueous resin emulsion having a particle size of from 0.03 to 2 μm, which is obtained by emulsion copolymerizing a monomer mixture consisting of (a) from 60 to 99.8% by weight of an acrylic acid fluoroalkyl ester derivative represented by formula (I) CH.sub.2 ═CR.sup.1 COOR.sup.2 (CF.sub.2).sub.n CFA.sub.2 (I) wherein R 1 represents a hydrogen atom or a lower alkyl group, R 2 represents the group --CH 2 -- m or the group ##STR4## wherein m represents 0 or an integer of from 1 to 12 and x+y is an integer of from 1 to 11, n represents 0 or an integer of from 1 to 12, and R 3 represents a hydrogen atom or an acetyl group, and A independently represents a hydrogen atom, a fluorine atom, or CF 3 , (b) from 0.1 to 20% by weight of an acrylic acid derivative represented by formula (II) R.sup.4 CH═CR.sup.5 COOH (III) wherein R 4 represents a hydrogen atom, a lower alkyl group or a carboxyl group, and R 5 represents a hydrogen atom or a lower alkyl group, and (c) from 0.1 to 20% by weight of a polyfunctional monomer for internal cross-linking, in an aqueous medium.
Claim 2
Dependent Claim
198 words
An aqueous resin emulsion having a particle size of from 0.03 to 2 μm, which is obtained by emulsion copolymerizing a monomer mixture consisting of (a) from 60 to 99.8% by weight of an acrylic acid fluoroalkyl ester derivative represented by formula (I) CH.sub.2 ═CR.sup.1 COOR.sup.2 (CF.sub.2).sub.n CFA.sub.2 (I) wherein R 1 represents a hydrogen atom or a lower alkyl group, R 2 represents the group --CH 2 -- m or the group ##STR4## wherein m represents 0 or an integer of from 1 to 12 and x+y is an integer of from 1 to 11, n represents 0 or an integer of from 1 to 12, and R 3 represents a hydrogen atom or an acetyl group, and A independently represents a hydrogen atom, a fluorine atom, or CF 3 , (b) from 0.1 to 20% by weight of an acrylic acid derivative represented by formula (II) R.sup.4 CH═CR.sup.5 COOH (III) wherein R 4 represents a hydrogen atom, a lower alkyl group or a carboxyl group, and R 5 represents a hydrogen atom or a lower alkyl group, and (c) from 0.1 to 20% by weight of a polyfunctional monomer for internal cross-linking, in an aqueous medium.
Claim 3
Dependent Claim
18 words
An aqueous resin emulsion as in claim 1, wherein the particle size is from 0.05 to 2 μm.
Claim 4
Dependent Claim
18 words
An aqueous resin emulsion as in claim 2, wherein the particle size is from 0.1 to 1 μm.
Claim 5
Dependent Claim
51 words
An aqueous resin emulsion as in claim 1, wherein the acrylic acid fluoroalkyl ester derivative is represented by formulae (I-a), (I-b), (I-c), and (I-d) ##STR5## where R 1 , m, n, and R 3 are as defined in claim 1, with the proviso that in formula (I-b), n cannot be 0.
Claim 6
Dependent Claim
61 words
An aqueous resin emulsion as in claim 4, wherein the acrylic acid fluoroalkyl ester derivative is CH 2 ═C(CH 3 )COOCH 2 CF 3 , CH 2 ═C(CH 3 )COOCH 2 (CF 2 ) 2 H, CH 2 ═C(CH 3 )COOCH 2 (CF 2 ) 4 H, or CH 2 ═C(CH 3 )COO(CH 2 ) 2 (CF 2 ) 8 F.
Claim 7
Dependent Claim
26 words
An aqueous resin emulsion as in claim 1, wherein the monomer mixture contains from 70 to 95% by weight of the acrylic acid fluoroalkyl ester derivative.
Claim 8
Dependent Claim
24 words
An aqueous resin emulsion as in claim 1, wherein the acrylic acid derivative is acrylic acid, methacrylic acid, itaconic acid, or a mixture thereof.
Claim 9
Dependent Claim
24 words
An aqueous resin emulsion as in claim 1, wherein the monomer mixture contains from 1 to 15% by weight of the acrylic acid derivative.
Claim 10
Dependent Claim
23 words
An aqueous resin emulsion as in claim 1, wherein the polyfunctional monomer for internal cross-linking is a poly(meth)acrylate of an aliphatic polyhydric alcohol.
Claim 11
Dependent Claim
26 words
An aqueous resin emulsion as in claim 1, wherein the monomer mixture contains from 1 to 10% by weight of the polyfunctional monomer for internal cross-linking.
Claim 12
Dependent Claim
64 words
An aqueous resin emulsion as in claim 1, wherein up to 90% by weight of said acrylic acid fluoroalkyl ester derivative is replaced by an acrylic acid alkyl ester derivative represented by formula (III) CH.sub.2 ═CR.sup.6 COOR.sup.7 (III) wherein R 6 represents a hydrogen atom or a lower alkyl group, and R 7 represents an alkyl group having from 1 to 8 carbon atoms.
Claim 13
Dependent Claim
51 words
An aqueous resin emulsion as in claim 1, wherein the monomer mixture contains from 70 to 90% by weight of the acrylic acid fluoroalkyl ester derivative, from 1 to 15% by weight of the acrylic acid derivative, and from 1 to 10% by weight of the polyfunctional monomer for internal cross-linking.
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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) | 1991-04-05 | 1991-10-05 | 1992-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-04-05 | 1995-10-05 | 1996-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-04-05 | 1999-10-05 | 2000-04-05 | $7700.00 | Window Closed / Lapsed |