Patent US3869415A successfully refreshed from Google Patents.
US3869415A
Expired / Lapsed
US
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Resinous polymer containing waterproofing plaster compositions
Assignee: Temec Ltd
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Filing: 1973-08-14
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Granted: 1975-03-04
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Expires: 1993-08-14
Abstract
Abstract A plaster composition having water-resistance properties comprising 30 to 60% by weight of calcium sulfate plaster solids, 0.25 to 15% by weight of a water-proofing resin selected from the group consisting of vinyl toluene-butadiene copolymers, polyvinyl chloride, polyvinyl acetate, petroleum and coal tar hydrocarbon polymer resins and styrene and acrylic copolymers, 4 to 48% of an organic solvent for said resin and 20 to 50% by weight of water. The composition preferably includes a cellulose ether suspending agent for the resin solution. Up to 50% by weight of the plaster solids may be replaced by a hydraulic cement.
Inventors
- 👤 John Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:08
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/14; C04B2111/00; C04B2111/20; C04B2111/27
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
93 words
A PLASTER COMPOSITION HAVING WATER-RESISTANCE PROPERTIES COMPRISING 30 TO 60% BY WEIGHT OF CALCIUM SULFACE PLASTER SOLIDS, 0,25 TP 15% BY WEIGHT OF A LOW MOLECULAR CHLORIDE, POLYSELECTED FROM THE GROUP CONSISTING OF POLYVINYL CHLORIDE POLYMER VINYL ACETATE, PETROLEUM AND COAL TAR HYDROCARBON POLYMER RESINS AND STYRENE AND CARYLIC COPOLYMERS, 44 TO 48% OF A SUBSTANTIALLY WATER-IMMISCIBLE ORGANIC SOLVENT FOR SAID RESIN AND 20 TO 50% BY WEIGHT OF WATER, SID ORGANIC SOLVENT HAVING THE PROPERTY OF EVAPORATING FROM THE COMPOSITION AT A RATE SIMILAR TO THE RATE OF EVAPORATION OF WATER THEREFROM.
Claim 2
Dependent Claim
93 words
A PLASTER COMPOSITION HAVING WATER-RESISTANCE PROPERTIES COMPRISING 30 TO 60% BY WEIGHT OF CALCIUM SULFACE PLASTER SOLIDS, 0,25 TP 15% BY WEIGHT OF A LOW MOLECULAR CHLORIDE, POLYSELECTED FROM THE GROUP CONSISTING OF POLYVINYL CHLORIDE POLYMER VINYL ACETATE, PETROLEUM AND COAL TAR HYDROCARBON POLYMER RESINS AND STYRENE AND CARYLIC COPOLYMERS, 44 TO 48% OF A SUBSTANTIALLY WATER-IMMISCIBLE ORGANIC SOLVENT FOR SAID RESIN AND 20 TO 50% BY WEIGHT OF WATER, SID ORGANIC SOLVENT HAVING THE PROPERTY OF EVAPORATING FROM THE COMPOSITION AT A RATE SIMILAR TO THE RATE OF EVAPORATION OF WATER THEREFROM.
Claim 3
Dependent Claim
25 words
A composition in accordance with claim 1, wherein up to 50% by weight of the calcium sulfate plaster solids is replaced by a hydraulic cement.
Claim 4
Dependent Claim
14 words
A composition in accordance with claim 1, wherein said resin is a polyindene resin.
Claim 5
Dependent Claim
14 words
A composition in accordance with claim 1, wherein said resin is a coumarone-indene resin.
Claim 6
Dependent Claim
27 words
A composition in accordance with claim 1, wherein said resin is a petroleum or coal tar hydrocarbon polymer resin having a molecular weight of 800 to 1100.
Claim 7
Dependent Claim
40 words
A composition in accordance with claim 1, wherein said resin is a polyindene resin obtained from the polymerization of unsaturates derived from the deep cracking of petroleum polymers derived from the coal tar naphtha fraction boiling between 168*C. and 175*C.
Claim 8
Dependent Claim
22 words
A composition in accordance with claim 1, where said resin has a ring and ball melting point of from 80* to 140*C.
Claim 9
Dependent Claim
26 words
A composition in accordance with claim 1, wherein said solvent is an aliphatic or aromatic hydrocarbon having a boiling point of about 120* to about 210*C.
Claim 10
Dependent Claim
25 words
A composition in accordance with claim 1, wherein said solvent is an aliphatic or aromatic hydrocarbon having a boiling point of from 138* to 181*C.
Claim 11
Dependent Claim
21 words
A composition in accordance with claim 1, wherein said solvent is a hydrocarbon having a boiling point of 168* to 175*C.
Claim 12
Dependent Claim
12 words
A composition in accordance with claim 1, wherein said solvent is xylene.
Claim 13
Dependent Claim
15 words
A composition in accordance with claim 1, wherein said solvent is a coal tar distillate.
Claim 14
Dependent Claim
20 words
A composition in accordance with claim 1, further including a cellulose ether as a suspending agent for the resin solution.
Claim 15
Dependent Claim
110 words
A plaster composition having water-resistance properties comprising 38.0 to 60% by weight of calcium sulfate plaster solids, 2.0 to 15% by weight of a low molecular weight resin selected from the group consisting of polyvinyl chloride, polyvinyl acetate, petroleum and coal tar hydrocarbon polymer resins and styrene and acrylic copolymers, 4.0 to 15% by weight of a substantially water-immiscible organic solvent for said resin, said organic solvent having the property of evaporating from the composition at a rate similar to the rate of evaporation of water therefrom, and 28.0 to 50% by weight of water, the organic solvent solution of resin being dispersed in the aqueous phase in the composition.
Claim 16
Dependent Claim
110 words
A plaster composition having water-resistance properties comprising 38.0 to 60% by weight of calcium sulfate plaster solids, 2.0 to 15% by weight of a low molecular weight resin selected from the group consisting of polyvinyl chloride, polyvinyl acetate, petroleum and coal tar hydrocarbon polymer resins and styrene and acrylic copolymers, 4.0 to 15% by weight of a substantially water-immiscible organic solvent for said resin, said organic solvent having the property of evaporating from the composition at a rate similar to the rate of evaporation of water therefrom, and 28.0 to 50% by weight of water, the organic solvent solution of resin being dispersed in the aqueous phase in the composition.
Claim 17
Dependent Claim
25 words
A composition in accordance with claim 14, wherein up to 50% by weight of the calcium sulfate plaster solids is replaced by a hydraulic cement.
Claim 18
Dependent Claim
20 words
A composition in accordance with claim 14, further including a cellulose ether as a suspending agent for the resin solution.
Claim 19
Dependent Claim
26 words
A composition in accordance with claim 14, wherein said solvent is an aliphatic or aromatic hydrocarbon having a boiling point of about 120* to about 210*C.
Claim 20
Dependent Claim
25 words
A composition in accordance with claim 14, wherein said solvent is an aliphatic or aromatic hydrocarbon having a boiling point of from 138* to 181*C.
Claim 21
Dependent Claim
21 words
A composition in accordance with claim 14, wherein said solvent is a hydrocarbon having a boiling point of 168* to 175*C.
Claim 22
Dependent Claim
22 words
The hardened waterproof plaster composition comprising the product obtained by allowing the composition of claim 1 to set to a hardened state.
Claim 23
Dependent Claim
19 words
A composition in accordance with claim 1, wherein the plaster solids, resin, organic solvent and water are packaged separately.
Claim 24
Dependent Claim
30 words
A compositon in accordance with claim 1, wherein the plaster solids are packaged as one component and one or more of the liquid components is packaged as a separate component.
Claim 25
Dependent Claim
74 words
A plaster composition having water-resistance properties comprising 30 to 60% by weight of calcium sulfate plaster solids, 0.25% to 15% by weight of a low molecular weight vinyl toluene-butadiene copolymer resin, 4 to 48% of a substantially water-immiscible organic solvent for said resin and 20 to 50% by weight of water, said organic solvent having the property of evaporating from the composition at a rate similar to the rate of evaporation of water therefrom.
Claim 26
Dependent Claim
74 words
A plaster composition having water-resistance properties comprising 30 to 60% by weight of calcium sulfate plaster solids, 0.25% to 15% by weight of a low molecular weight vinyl toluene-butadiene copolymer resin, 4 to 48% of a substantially water-immiscible organic solvent for said resin and 20 to 50% by weight of water, said organic solvent having the property of evaporating from the composition at a rate similar to the rate of evaporation of water therefrom.
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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) | 1978-03-03 | 1978-09-02 | 1979-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-03 | 1982-09-02 | 1983-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-03 | 1986-09-02 | 1987-03-04 | $7700.00 | Window Closed / Lapsed |