IP Library › Granted Patent US 7,033,432
Granted Patent B2
US 7,033,432 · App. 11/049,363 · Granted Apr 25, 2006

Plaster composition and method of making same

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Quick Facts
Patent No.
US 7,033,432
App. No.
11/049,363
Granted
Apr 25, 2006
Kind
B2
Abstract

The present invention provides a plaster composition that includes calcined gypsum and a naphthalene sulfonate-aldehyde condensate alkali salt polymer having a weight average molecular weight from about 17,000 to about 47,000. The present invention also provides a method of forming a plaster composition that includes belending calcined gypsum and a naphthalene sulfonate-aldehyde condensate alkali salt polymer having a weight average molecular weight from about 17,000 to about 47,000 together to form a dry blend and contacting the dry blend with water to form a hardenable aqueous slurry.

Claims (16)

1. A plaster composition comprising:

calcined gypsum; and

a naphthalene sulfonate-aldehyde condensate alkali salt polymer having a weight average molecular weight from about 17,000 to about 47,000.

2. The plaster composition according to claim 1 wherein the aldehyde in the naphthalene sulfonate-aldehyde condensate alkali salt polymer is selected from the group consisting of formaldehyde, paraformaldehyde, and gluteraldehyde.

3. The plaster composition according to claim 1 wherein the calcined gypsum and the naphthalene sulfonate-aldehyde condensate alkali salt polymer are dry-blended together.

4. The plaster composition wherein the aldehyde in the naphthalene sulfonate-aldehyde condensate alkali salt polymer is formaldehyde.

5. The plaster composition according to claim 4 wherein the naphthalene sulfonate-aldehyde condensate alkali salt polymer is a sodium salt.

6. The plaster composition according to claim 4 wherein the naphthalene sulfonate-aldehyde condensate alkali salt polymer is a calcium salt.

7. A method of forming a plaster composition comprising:

blending calcined gypsum and a naphthalene sulfonate-aldehyde condensate alkali salt polymer having a weight average molecular weight from about 17,000 to about 47,000 together to form a dry blend; and

contacting the dry blend with water to form a hardenable aqueous slurry.

8. The method of forming a plaster composition according to claim 7 wherein the aldehyde in the naphthalene sulfonate-aldehyde condensate alkali salt polymer is selected from the group consisting of formaldehyde, paraformaldehyde, and gluteraldehyde.

9. The method of forming a plaster composition according to claim 7 wherein the calcined gypsum and the naphthalene sulfonate-aldehyde condensate alkali salt polymer are dry-blended together.

10. The method of forming a plaster composition according to claim 7 wherein the aldehyde in the naphthalene sulfonate-aldehyde condensate alkali salt polymer is formaldehyde.

11. The method of forming a plaster composition according to claim 10 wherein the naphthalene sulfonate-aldehyde condensate alkali salt polymer is a sodium salt.

12. The method of forming a plaster composition according to claim 10 wherein the naphthalene sulfonate-aldehyde condensate alkali salt polymer is a calcium salt.

Assignments (17)
RELEASE OF SECURITY INTEREST Recorded Jun 30, 2024
From: TWIN BROOK CAPITAL PARTNERS, LLC, AS ADMINISTRATIVE AGENT
To: RG DISPERSANTS USA LLC
Reel/Frame 067877/0761 →
RELEASE OF SECURITY INTEREST Recorded Sep 25, 2019
From: CITIZENS BANK, N.A.
To: GEO SPECIALTY CHEMICALS, INC.
Reel/Frame 050486/0061 →
RELEASE OF SECURITY INTEREST Recorded Sep 4, 2019
From: U.S. BANK NATIONAL ASSOCIATION
To: GEO SPECIALTY CHEMICALS, INC.
Reel/Frame 050264/0881 →
SECURITY INTEREST Recorded Aug 30, 2019
From: GEO SPECIALTY CHEMICALS, INC.
To: TWIN BROOK CAPITAL PARTNERS, LLC, AS ADMINISTRATIVE AGENT
Reel/Frame 050219/0608 →
RELEASE OF SECURITY INTEREST Recorded Aug 20, 2019
From: WELLS FARGO BANK, NATIONAL ASSOCIATION
To: GEO SPECIALTY CHEMICALS, INC.
Reel/Frame 050102/0181 →
SECURITY INTEREST Recorded Jan 11, 2019
From: GEO SPECIALTY CHEMICALS, INC.
To: CITIZENS BANK, N.A.
Reel/Frame 047968/0591 →
RELEASE OF SECURITY INTEREST Recorded Oct 19, 2017
From: WELLS FARGO BANK, NATIONAL ASSOCIATION
To: GEO SPECIALTY CHEMICALS, INC.
Reel/Frame 043905/0673 →
SECURITY INTEREST Recorded Oct 18, 2017
From: GEO SPECIALTY CHEMICALS, INC.
To: U.S. BANK NATIONAL ASSOCIATION
Reel/Frame 043898/0392 →
RELEASE OF SECURITY INTEREST Recorded Feb 26, 2013
From: WELLS FARGO CAPITAL FINANCE, LLC
To: GEO SPECIALTY CHEMICALS, INC.; GEO SPECIALTY CHEMICALS LIMITED
Reel/Frame 029876/0076 →
RELEASE OF SECURITY INTEREST Recorded Oct 31, 2012
From: WELLS FARGO CAPITAL FINANCE, LLC
To: GEO SPECIALTY CHEMICALS, INC.; GEO SPECIALTY CHEMICALS LIMITED
Reel/Frame 029215/0137 →
SECURITY AGREEMENT Recorded Oct 31, 2012
From: GEO SPECIALTY CHEMICALS, INC.
To: CITIZENS BANK OF PENNSYLVANIA
Reel/Frame 029217/0707 →
RELEASE OF SECURITY INTEREST Recorded Mar 24, 2010
From: THE CIT GROUP/BUSINESS CREDIT, INC.
To: GEO SPECIALTY CHEMICALS, INC.
Reel/Frame 024128/0129 →
SECURITY AGREEMENT Recorded Mar 24, 2010
From: GEO SPECIALTY CHEMICALS, INC.; GEO SPECIALTY CHEMICALS LIMITED
To: WELLS FARGO CAPITAL FINANCE, LLC
Reel/Frame 024128/0355 →
NOTICE OF GRANT OF SECURITY INTEREST IN PATENTS Recorded Apr 8, 2009
From: GEO SPECIALTY CHEMICALS, INC.
To: WELLS FARGO BANK, NATIONAL ASSOCIATION, AS COLLATERAL AGENT
Reel/Frame 022521/0554 →
SECURITY AGREEMENT Recorded Feb 19, 2009
From: GEO SPECIALTY CHEMICALS, INC.
To: THE CIT GROUP/BUSINESS CREDIT, INC.
Reel/Frame 022277/0316 →
SECURITY AGREEMENT Recorded Mar 17, 2006
From: GEO SPECIALTY CHEMICALS, INC.
To: WELLS FARGO BANK, NATIONAL ASSOCIATION
Reel/Frame 017314/0492 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 20, 2005
From: SAVOLY, ARPAD; ELKO, DAWN P.; VEAL, BENNIE
To: GEO SPECIALTY CHEMICALS, INC.
Reel/Frame 016710/0532 →