Claims
- 1. A vinyl acetate-ethylene copolymer emulsion comprising an aqueous, stable collodial dispersion of at least about 60 wt % of a copolymer containing 65 to 90 wt % vinyl acetate and 10 to 35 wt % ethylene prepared by the emulsion polymerization of the monomers in the presence of 4 to 8 wt %, based on vinyl acetate, of a stabilizing system consisting essentially of a fully (98 to 99+mole %) hydrolyzed polyvinyl alcohol, a partially (86 to 90 mole %) hydrolyzed polyvinyl alcohol, the polyvinyl alcohols having a degree of polymerization ranging from 100 to 600 and present at 3 to 5 wt % in a weight ration ranging from 3:1 to 1:3, and 1 to 3 wt % of a nonylphenoxy (polyethyleneoxy) ethanol.
- 2. The vinyl acetate-ethylene copolymer emulsion of claim 1 in which the weight ratio of fully hydrolyzed polyvinyl alcohol to partially hydrolyzed polyvinyl alcohol is about 1:1.
- 3. The vinyl acetate-ethylene copolymer emulsion of claim 1 in which the copolymer contains 85 to 90 wt % vinyl acetate and 10 to 15 wt % ethylene.
- 4. The vinyl acetate-ethylene copolymer emulsion of claim 1 in which the nonylphenoxy (polyethyleneoxy) ethanol has an HLB value ranging from about 17.2 to 19.
- 5. The vinyl acetate-ethylene copolymer emulsion of claim 4 in which the HLB value is about 17.2.
- 6. The vinyl acetate-ethylene copolymer emulsion of claim 2 in which the nonylphenoxy poly(ethyleneoxy) ethanol has an HLB value ranging from about 17.2 to 19.
- 7. The vinyl acetate-ethylene copolymer emulsion of claim 6 in which the HLB value is about 17.2.
Parent Case Info
This is a continuation of application Ser. No. 07/144,896 filed 1/15/88 now abandoned, which is a divisional of application Ser. No. 07/063,603 filed 6/18/87 now U.S. Pat. No. 4,735,986, which is a continuation of application Ser. No. 06/762,097 filed 8/2/85.
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
4921898 |
Lenney et al. |
May 1991 |
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Divisions (1)
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Number |
Date |
Country |
Parent |
63603 |
Jun 1987 |
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Continuations (2)
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Number |
Date |
Country |
Parent |
144896 |
Jan 1988 |
|
Parent |
762097 |
Aug 1985 |
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