US4506057A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stable latexes containing phosphorus surface groups
Assignee: Dow Chemical Co
•
Filing: 1983-12-19
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Granted: 1985-03-19
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Expires: 2003-12-19
Abstract
Abstract A phosphorus modified latex composition useful in the coating of substrates with inorganic fillers. A latex particle having phosphorus groups intimately bound to the particle's surface formed by the emulsion polymerization of a latex with a phosphorus compound. Also a method of preparing a composite sheet and a paper coating latex with the phosphorus modified latex is provided.
Inventors
- 👤 Bettye W. Greene
- 👤 Sun-Lin Chen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:36
CPC Classifications
C; C08; C08F; C08F2/00; C08F2/12; C08F2/16; C08F2/22; C08F2/24; D; D21; D21H; D21H17/00; D21H17/20; D21H17/33; D21H17/34; D21H17/41; D21H17/42; D21H19/00; D21H19/36; D21H19/44; D21H19/56; D21H19/58
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
51 words
A modified latex composition containing a phosphorus surface group comprising: (a) at least one ethylenically unsaturated synthetic monomer which is emulsion polymerized to form a latex, and (b) a phosphorus compound which is intimately bound to the surface of said latex, said phosphorus compound being a phosphonate and/or a phosphate compound.
Claim 2
Dependent Claim
51 words
A modified latex composition containing a phosphorus surface group comprising: (a) at least one ethylenically unsaturated synthetic monomer which is emulsion polymerized to form a latex, and (b) a phosphorus compound which is intimately bound to the surface of said latex, said phosphorus compound being a phosphonate and/or a phosphate compound.
Claim 3
Dependent Claim
30 words
The composition of claim 1 wherein said ethylenically unsaturated synthetic monomer is of the general formula CH 2 ═CHR wherein R is H, alkyl, aryl, nitrile, ester, acid or halogen.
Claim 4
Dependent Claim
11 words
The composition of claim 1 wherein said latex is a copolymer.
Claim 5
Dependent Claim
8 words
The copolymer of claim 3 which is styrene-butadiene.
Claim 6
Dependent Claim
14 words
The composition of claim 1 wherein said phosphate compound is a phosphated ester surfactant.
Claim 7
Dependent Claim
17 words
The composition of claim 1 wherein said phosphorus compound is intimately bound by covalent bonds or adsorption.
Claim 8
Dependent Claim
27 words
The composition of claim 1 wherein said phosphorus compound is a mixture comprising: (a) a surfactant containing a --PO(O) 2 group, and (b) an ethylenically unsaturated comonomer.
Claim 9
Dependent Claim
17 words
The mixture of claim 7 wherein said surfactant containing a --PO(O) 2 group is a phosphated ester.
Claim 10
Dependent Claim
16 words
The mixture of claim 7 wherein said ethylenically unsaturated comonomer is an α,β-ethylenically unsaturated carboxylic acid.
Claim 11
Dependent Claim
19 words
The mixture of claim 7 wherein said ethylenically unsaturated comonomer is a derivative of a phosphonic or phosphoric acid.
Claim 12
Independent Claim
87 words
A method for preparing a paper coating composition formed from an aqueous dispersion of at least one inorganic filler, and from about 2 to about 30 percent of a modified latex composition containing a phosphorus surface group comprising: (a) at least one ethylenically unsaturated synthetic monomer which is emulsion polymerized to form a latex, and (b) a mixture comprising: (1) a surfactant containing a --PO(O) 2 group, and (2) an ethylenically unsaturated comonomer wherein said --PO(O) 2 group is intimately bound to the surface of said latex.
Claim 13
Independent Claim
87 words
A method for preparing a paper coating composition formed from an aqueous dispersion of at least one inorganic filler, and from about 2 to about 30 percent of a modified latex composition containing a phosphorus surface group comprising: (a) at least one ethylenically unsaturated synthetic monomer which is emulsion polymerized to form a latex, and (b) a mixture comprising: (1) a surfactant containing a --PO(O) 2 group, and (2) an ethylenically unsaturated comonomer wherein said --PO(O) 2 group is intimately bound to the surface of said latex.
Claim 14
Dependent Claim
30 words
The method of claim 11 wherein said ethylenically unsaturated synthetic monomer is of the general formula CH 2 ═CHR wherein R is H, alkyl, aryl, nitrile, ester, acid or halogen.
Claim 15
Dependent Claim
11 words
The method of claim 11 wherein said latex is a copolymer.
Claim 16
Dependent Claim
8 words
The copolymer of claim 13 which is styrene-butadiene.
Claim 17
Dependent Claim
12 words
The method of claim 11 wherein said surfactant is a phosphated ester.
Claim 18
Dependent Claim
18 words
The method of claim 11 wherein said --PO(O) 2 group is intimately bound by covalent bonds or adsorption.
Claim 19
Dependent Claim
19 words
The method of claim 11 wherein said ethylenically unsaturated comonomer of said mixture is an α,β-ethylenically unsaturated carboxylic acid.
Claim 20
Dependent Claim
22 words
The method of claim 11 wherein said ethylenically unsaturated comonomer of said mixture is a derivative of a phosphonic or phosphoric acid.
Claim 21
Dependent Claim
18 words
The composition of claim 1, wherein said phosphonate compound is covalently bonded to the surface of said latex.
Claim 22
Dependent Claim
21 words
The method of claim 18 wherein said derivative of a phosphonic acid is covalently bonded to the surface of said latex.
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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) | 1988-03-18 | 1988-09-17 | 1989-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-03-18 | 1992-09-17 | 1993-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-03-18 | 1996-09-17 | 1997-03-19 | $7700.00 | Window Closed / Lapsed |