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US 3,940,361 AGranted
Dispersions of styrene/acrylonitrile copolymers
AssigneeE. I. Du Pont de Nemours and Company
InventorEugene G. Sommerfeld
Life of this patent
Estimating the term…
Abstract
Coating compositions containing copolymers of ethylenically unsaturated aromatic monomers and ethylenically unsaturated nitrile monomers are useful for coating paper, plastics, metals and other packaging materials. These compositions, when blended with vinyl polymers, show improved flexibility and adhesion.
Claims12
A composition comprising
- A. 75-100 percent, by weight of solids, of a particulate copolymer of
- 1. 25-75 percent, by weight, of at least one monomer represented by the structure ##SPC2##
- where R, R.sub.1, R.sub.2 and R.sub.3 are hydrogen or an alkyl radical of 1-5 carbon atoms;
- and
- 2. 25-75 percent, by weight, of at least one ethylenically unsaturated nitrile monomer,
- the total of (1) and (2) being 100 percent;
- and
- B. an organic liquid carrier comprising
- 1. 20-80 percent, by weight, of ethylene carbonate or propylene carbonate,
- and
- 2. 20-80 percent, by weight, of an alkanol of 1-4 carbon atoms, acetone, methylethyl ketone, an ether alcohol, an ester of an ether alcohol or tetrahydrofuran.
8 more elements
A composition comprising
- A. 75-100 percent, by weight of solids, of a particulate copolymer of
- 1. 25-75 percent, by weight, of at least one monomer represented by the structure ##SPC3##
- where R, R.sub.1, R.sub.2 and R.sub.3 are hydrogen or an alkyl radical of 1-5 carbon atoms;
- and
- 2. 25-75 percent, by weight, of at least one ethylenically unsaturated nitrile monomer, the total of (1) and (2) being 100 percent;
- and
- B. 0.25-25 percent, by weight of solids, of a halovinyl polymer or halovinylidene polymer;
- and
- C. an organic liquid carrier comprising
- 1. 20-80 percent, by weight, of ethylene carbonate or propylene carbonate,
- and
- 2. 20-80 percent, by weight, of an alkanol of 1-4 carbon atoms, acetone, methylethyl ketone, an ether alcohol, an ester of an ether alcohol or tetrahydrofuran, the organic liquid being a solvent or suspendant for (B).
9 more elements
Dependencies are inferred from the claim text.