Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
73 words
A water resistant, starch-based adhesive composition having a pH in the range from about 4.5 to about 7.0 consisting essentially of: (a) water; (b) corn or wheat starch; (c) a carboxylated styrene-butadiene copolymer latex, said starch and latex being present in amounts sufficient to provide a starch to latex ratio, based on starch weight and latex solids weight, of between about 1:1 and about 4:1; (d) a thickener; and (e) a cross-linking agent.
Claim 2
Dependent Claim
73 words
A water resistant, starch-based adhesive composition having a pH in the range from about 4.5 to about 7.0 consisting essentially of: (a) water; (b) corn or wheat starch; (c) a carboxylated styrene-butadiene copolymer latex, said starch and latex being present in amounts sufficient to provide a starch to latex ratio, based on starch weight and latex solids weight, of between about 1:1 and about 4:1; (d) a thickener; and (e) a cross-linking agent.
Claim 3
Dependent Claim
25 words
The adhesive composition of claim 1, wherein said cross-linking agent constitutes less than about five weight percent based upon the total weight of said composition.
Claim 4
Dependent Claim
16 words
The composition of claim 1, wherein said thickener is employed in combination with an alkaline material.
Claim 5
Dependent Claim
16 words
The composition of claim 3, wherein said thickener is hydroxyethylcellulose and said alkaline material is ammonia.
Claim 6
Dependent Claim
16 words
The composition of claim 2, wherein said cross-linking agent is a urea-formaldehyde or melamine formaldehyde resin.
Claim 7
Dependent Claim
12 words
The composition of claim 5, wherein said cross-linking agent further comprises glyoxal.
Claim 8
Dependent Claim
26 words
The composition of claim 6, wherein said cross-linking agent comprises glyoxal and a urea-formaldehyde resin in a weight ratio of glyoxal to urea-formaldehyde of 3:2, respectively.
Claim 9
Dependent Claim
15 words
The composition of claim 2, wherein said cross-linking agent comprises glyoxal and a urea-formaldehyde resin.
Claim 10
Dependent Claim
10 words
The composition of claim 1, wherein said starch is uncooked.
Claim 11
Dependent Claim
89 words
The composition of claim 1, wherein said water is present in an amount of between about 25 percent to about 54 weight percent, said starch is present in an amount of between about 25 and about 38 weight percent, said latex is present in an amount of between about 17 and about 47 weight percent, said thickener is present in an amount of between about 0.1 to about 1 weight percent and said cross-linking agent is present in an amount of between about 0.5 and about 5 weight percent.
Claim 12
Dependent Claim
20 words
The composition of claim 10, further comprising ammonia in an amount of between about 0.05 and about 0.1 weight percent.
Claim 13
Dependent Claim
25 words
The composition of claim 11, wherein said thickener comprises ammonia activated hydroxyethylcellulose and said cross-linking agent comprises a urea-formaldehyde resin, a melamine-formaldehyde resin or glyoxal.
Claim 14
Dependent Claim
31 words
The composition of claim 10, wherein the starch to latex ratio is between about 2.3:1 and 3.8:1, based on the weight of the starch and the solids weight of the latex.