IP Library › Granted Patent US 7,776,981
Granted Patent B2
US 7,776,981 · App. 11/195,501 · Granted Aug 17, 2010

Colloidally stabilized emulsions

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Quick Facts
Patent No.
US 7,776,981
App. No.
11/195,501
Granted
Aug 17, 2010
Kind
B2
Abstract

A filter substrate impregnated with an emulsion polymer, the emulsion polymer being substantially devoid of phenolics and stabilized using a protective colloid.

Claims (8)

1. An adhesive or binder for substrates, the adhesive or binder comprising a butadiene polymer produced by emulsion polymerization, wherein the butadiene polymer produced by emulsion polymerization comprises

a) at least 15 weight percent of nitrogen-containing monomers,

b) at least one self-crosslinking, methylol-containing monomer selected from the group consisting of N-methylol acrylamide, N-methylol methacrylamide and C1 to C4 ethers thereof, and

c) a protective colloid.

2. The adhesive or binder according to claim 1 , wherein the protective colloid is polyvinyl alcohol.

3. The adhesive or binder according to claim 2 , wherein the polyvinyl alcohol is fully hydrolyzed.

4. The adhesive or binder according to claim 2 , wherein the polyvinyl alcohol is partially hydrolyzed.

5. The adhesive or binder according to claim 1 , wherein the butadiene emulsion polymer comprises 1,3-butadiene.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 15, 2009
From: DOW REICHHOLD SPECIALTY LATEX LLC
To: MALLARD CREEK POLYMERS, INC.
Reel/Frame 022109/0310 →
NUNC PRO TUNC ASSIGNMENT Recorded Jan 15, 2009
From: KRISHNAN, VENKATARAM, DR.
To: DOW REICHHOLD SPECIALTY LATEX LLC
Reel/Frame 022111/0007 →