Joint composition including starch
AssigneeGeorgia-Pacific Corporation
InventorsGeorge W. Green, Hubert C. Francis
Life of this patent
Estimating the term…
Abstract
A filler composition of the type used to hide the joint of adjoining wallboard panels and comprising filler, binder, bulking agent and improved starch-bodying agent, and optionally a water retention agent.
Claims25
A powdery composition capable of being combined with water to form a filler composition of the type used to hide the joint of adjoining wallboard panels, said filler composition being a wet coherent paste-like mass of fine-particle solids capable of being spread readily and drying to form a solid mass, said powdery compositions consisting essentially of filler, binder, bulking agent and improved starch-bodying agent.
A ready mix filler composition of the type used to hide the joint of adjoining wallboard panels and being a wet coherent paste-like mass of fine particle solids capable of being spread readily and drying to form a solid mass, said filler composition consisting essentially of filler, binder, bulking agent, improved starch-bodying agent and water, the proportion of water and other constituents being such that said composition has a viscosity within the range of about 350 to about 750 Brabender units at 70.degree. F.
A dry powdery composition for use in preparing a filler composition consisting essentially of:
- (A) about 50 to about 87 wt.% filler;
- (B) about 2 to about 10 wt.% binder;
- (C) about 10 to about 30 wt.% bulking agent;
- and
- (D) about 1 to about 5 wt.% of improved starch-bodying agent.
A composition comprising:
- (A) about 25 to about 93 wt.% filler;
- (B) about 2 to about 12 wt.% binder;
- (C) about 5 to about 50 wt.% bulking agent;
- and
- (D) about 0.5 to about 10 wt.% of improved starch-bodying agent.
A composition consisting essentially of:
- (A) about 73 to about 81 wt.% filler;
- (B) about 1.8 to about 3 wt.% starch binder;
- (C) about 1.5 to about 2.5 wt.% improved starch-bodying agent;
- (D) about 13 to about 21 wt.% bulking agent;
- (E) about 0.1 to about 0.4 wt.% water retention agent;
- (F) about 2 to about 7 wt.% anticracking agent;
- (G) about 0.05 to about 0.2 wt.% buffering agent;
- (H) about 0.1 to about 0.2 wt.% defoaming agent;
- and
- (I) about 0.05 to about 0.1 wt.% preservative.
A composition consisting essentially of:
- (A) about 75 to about 80 wt.% filler;
- (B) about 0.1 to about 0.2 wt.% poly(vinyl alcohol) binder;
- (C) about 1.5 to about 2.5 wt.% improved starch-bodying agent;
- (D) about 15 to about 21 wt.% bulking agent;
- (E) about 0.1 to about 0.4 wt.% water retention agent;
- (F) about 2 to about 7 wt.% anticracking agent;
- (G) about 0.05 to about 0.2 wt.% buffering agent;
- (H) about 0.1 to about 0.2 wt.% defoaming agent;
- and
- (I) about 0.05 to about 0.1 wt.% preservative.
A ready mix filler composition consisting essentially of:
- (A) about 45 to about 62.5 wt.% limestone;
- (B) about 1 to about 3.5 wt.% polymeric binder;
- (C) about 0 to about 0.5 wt.% starch binder;
- (D) about 0.5 to about 1 wt.% improved starch-bodying agent;
- (E) about 3.5 to about 7 wt.% aluminum silicate;
- (F) about 0.25 to about 0.3 wt.% hydroxy propyl methyl cellulose;
- and
- (G) about 32 to about 38 wt.% water.
A method for preparing a powdery composition capable of being combined with water to form a filler composition of the type used to hide the joint of adjoining wallboard panels, said filler composition being a wet coherent paste-like mass of fine-particle solids capable of being spread readily and drying to form a solid mass, comprising forming said powdery composition by combining filler, binder, bulking agent and a waxy-maize starch.
A method for preparing a powdery composition capable of being combined with water to form a filler composition of the type used to hide the joint of adjoining wallboard panels, said filler composition being a wet coherent paste-like mass of fine-particle solids capable of being spread readily and drying to form a solid mass, comprising forming said powdery composition by combining filler, binder, bulking agent and a starch containing virtually 100% amylopectin.
Dependencies are inferred from the claim text.