Acrylate latex and latex foam products
Abstract
Abstract A FILM-FORMING LATEX COMPRISING A COPOLYMER OF (A) AN A,B-ETHYLENICALLY UNSATURATED CARBOXYLIC ACID, E.G., METHACRYLIC ACID, (B) A MONO(HYDROXYALKYL) ESTER OF ETHYLENICALLY UNSATURATED CARBOXYLIC ACID, E.G., 2-HYDROXYETHYL ACRYLATE AND (C) AT LEAST ONE ALKYL ESTER OF AN A,BMONOETHYLENICALLY UNSATURATED CARBOXYLIC ACID, E.G.BUTYL ACRYLATE, IS PREPARED BY EMULSION POLYMERIZATION. A MODIFIED, COPOLYMER AQUEOUS DISPERSION IS PREPARED BY BLENDING THE LATEX WITH AN ORGANIC COREACTIVE MATERIAL, E.G. A MELAMINE-FORMALDEHYDE RESIN, AND OPTIONAL FORMULATING INGREDIENTS. LATEX FOAM IS PREPARED FROM THE MODIFIED, COPOLYMER AQUEOUS DISPERSION, WHICH MAY CONTAIN OPTIONAL FORMULATING INGREDIENTS, BY FROTHING THE RESULTING FOAM FORMATION, AND CURING AND DRYING THE WET FROTH THUS OBTAINED TO FORM LATEX FOAM SPONGE. OTHER ARTICLES ARE OBTAINED, FOR EXAMPLE, BY APPLYING THE WET FROTH TO A TEXTILE SUBSTRATE, THEN CARRYING OUT THE CURING AND DRYING STEPS.
Inventors
- 👤 Carl Moore
- 👤 Donald B Parrish
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-09 | 1975-02-08 | 1975-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-09 | 1979-02-08 | 1979-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-09 | 1983-02-08 | 1983-08-10 | $7700.00 | Window Closed / Lapsed |