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US3969293A
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Basic zinc phosphites
Assignee: NL Chemicals Inc
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Filing: 1975-03-24
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Granted: 1976-07-13
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Expires: 1995-03-24
Abstract
Abstract Novel basic zinc phosphites are described for use as tannin stain inhibitors which can be represented by the formula; X ZnO.ZnHPO3 wherein X is a number from 1/2 to 10.
Inventors
- 👤 Edward Louis White
- 👤 William Ernest Robertson
- 👤 William Heng-Sen Yu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:13
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/04; C09C1/046; A; A01; A01N; A01N59/00; A01N59/26; C01; C01B; C01B25/00; C01B25/16; C09D; C09D5/00; C09D5/02; C09D5/024; C09D7/00; C09D7/40; C09D7/48; C01P; C01P2006/00; C01P2006/80; C08; C08K; C08K3/00; C08K3/10; C08K3/11; C08K3/32
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
60 words
In a latex paint coating composition, the improvement comprising having present in said latex paint coating composition an agent for rendering said latex paint coating composition color resistant toward tannin stains and possessing corrosion and mildew resistant properties, said agent comprising a basic zinc phosphite having the formula X ZnO.ZnHPO 3 where X is a number from 1/2 to 100
Claim 2
Dependent Claim
60 words
In a latex paint coating composition, the improvement comprising having present in said latex paint coating composition an agent for rendering said latex paint coating composition color resistant toward tannin stains and possessing corrosion and mildew resistant properties, said agent comprising a basic zinc phosphite having the formula X ZnO.ZnHPO 3 where X is a number from 1/2 to 100
Claim 3
Dependent Claim
23 words
Latex paint coating composition according to claim 1 in which the basic zinc phosphite contains from 0 to 3 moles of bound water.
Claim 4
Dependent Claim
50 words
A process for imparting tannin stain inhibition, corrosion resistance and mildew resistance to a latex paint coating composition which comprises adding to said latex paint coating composition a basic zinc phosphite, said basic zinc phosphite having the formula X ZnO.ZnHPO 3 where X is a number from 1/2 to 10.
Claim 5
Dependent Claim
50 words
A process for imparting tannin stain inhibition, corrosion resistance and mildew resistance to a latex paint coating composition which comprises adding to said latex paint coating composition a basic zinc phosphite, said basic zinc phosphite having the formula X ZnO.ZnHPO 3 where X is a number from 1/2 to 10.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-07-13 | 1980-01-12 | 1980-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-13 | 1984-01-12 | 1984-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-13 | 1988-01-12 | 1988-07-13 | $7700.00 | Window Closed / Lapsed |