US3867335A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tape joint cement additive
Assignee: Union Carbide Corp
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Filing: 1972-03-31
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Granted: 1975-02-18
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Expires: 1992-03-31
Abstract
Abstract A tape joint cement composition comprising an inert filler, a poly(vinylacetate) binder and from 0.5 to 5.0% by weight based on the weight of the poly(vinylacetate) of poly(1,2-dimethyl-5vinyl-pyridinium methyl sulfate). A method of preparing a readymix tape joint cement and a method of preparing a dry-mix tape joint cement utilizing said compound are also included.
Inventors
- 👤 Delmer H Reed
- 👤 Edward C Seltzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:20
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/10; C09K3/1025; C09K3/1028; C04; C04B; C04B26/00; C04B26/02; C04B26/04; C08; C08K; C08K3/00; C08K3/01; C08K3/013; C08K3/18; C08K3/24; C08K3/26; C08K3/34; C08L; C08L31/00; C08L31/02; C08L31/04; C04B2111/00; C04B2111/00474; C04B2111/00663; C04B2111/00672; C08L39/00; C08L39/04; C08L39/08; C09K2200/00; C09K2200/02; C09K2200/0239; C09K2200/0243; C09K2200/0247; C09K2200/0252; C09K2200/0265; C09K2200/0278; C09K2200/0286; C09K2200/06; C09K2200/0602; C09K2200/0615; C09K2200/0622
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
110 words
IN A TAPE JOINT CEMENT COMPOSITION COMPRISING (A) AN INERT FILLER, AND (B) A BINDER, SAID BINDER COMPRISING SOLID, POLY(VINYL ACETATE) SELECTED FROM THE GROUP CONSISTING OF VINYL ACETATE HOMOPOLYMER AND COPOLYMERS OF VINYL ACETATE WITH AT LEAST ONE COMONOMER SELECTED FROM THE GROUP CONSISTING OF DIBUTYL MALEATE, DIBUTYL FUMARATE, VINYL PROPIONATE, ETHYL ACRYLATE, BUTYL ACRYLATE, AND 2-ETHYLHEXYL ACRYLATE, THE IMPROVEMENT OF INCORPORATION IN SAID TAPE JOINT CEMENT COMPOSITION (C) FROM ABOUT 0.5 TO ABOUT 5 WEIGHT PER CENT, BASED UPON THE WEIGHT OF SAID BINDER, OF POLY(1,2-DIMETHYL-5VINYLPYRIDINIUM METHYL SULFATE) HOMOPOLYMER, SAID POLY(1,2DIMETHYL-5:VINYLPYRIDINUIM METHYL SULFATE) HOMOPOLYMER HAVING A REDUCED VISCOSITY OF FROM 0.8 TO 1.5 IN 0.5 M SODIUM BISULFITE.
Claim 2
Dependent Claim
110 words
IN A TAPE JOINT CEMENT COMPOSITION COMPRISING (A) AN INERT FILLER, AND (B) A BINDER, SAID BINDER COMPRISING SOLID, POLY(VINYL ACETATE) SELECTED FROM THE GROUP CONSISTING OF VINYL ACETATE HOMOPOLYMER AND COPOLYMERS OF VINYL ACETATE WITH AT LEAST ONE COMONOMER SELECTED FROM THE GROUP CONSISTING OF DIBUTYL MALEATE, DIBUTYL FUMARATE, VINYL PROPIONATE, ETHYL ACRYLATE, BUTYL ACRYLATE, AND 2-ETHYLHEXYL ACRYLATE, THE IMPROVEMENT OF INCORPORATION IN SAID TAPE JOINT CEMENT COMPOSITION (C) FROM ABOUT 0.5 TO ABOUT 5 WEIGHT PER CENT, BASED UPON THE WEIGHT OF SAID BINDER, OF POLY(1,2-DIMETHYL-5VINYLPYRIDINIUM METHYL SULFATE) HOMOPOLYMER, SAID POLY(1,2DIMETHYL-5:VINYLPYRIDINUIM METHYL SULFATE) HOMOPOLYMER HAVING A REDUCED VISCOSITY OF FROM 0.8 TO 1.5 IN 0.5 M SODIUM BISULFITE.
Claim 3
Dependent Claim
15 words
The tape joint cement composition of claim 1 wherein said binder is vinyl acetate homopolymer.
Claim 4
Dependent Claim
17 words
The tape joint cement composition of claim 1 wherein said binder is spray dried vinyl acetate homopolymer.
Claim 5
Dependent Claim
25 words
The tape joint cement composition of claim 1 wherein said filler is selected from the group consisting of calcium carbonate, clay, mica, silica, and asbestos.
References Cited (Backward Citations)
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US3084133A
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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) | 1978-02-17 | 1978-08-19 | 1979-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-17 | 1982-08-19 | 1983-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-17 | 1986-08-19 | 1987-02-18 | $7700.00 | Window Closed / Lapsed |