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| Finely divided ionomer coated thermoplastic resin |
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| Highly corrosion-resistant surface-treated steel plate |
| The present invention relates to a highly corrosion-resistant surface-treated steel plate. More ... |
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| Highly corrosion-resistant, multi-layer coated steel sheets |
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| Magnetic recording medium |
| OF THE INVENTION The poly(paraxylylene), poly(monochloroparaxylylene), and poly(... |
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| Woven multilayer papermaking fabric having increased stability and permeability and method |
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Polyurethane binder composition containing a rubber extender oil and a finely divided solid soybean derivative
| Details |
Inventors: Burke, Earl S.;
Assignee: The General Tire & Rubber Company (Akron, OH)
Primary Examiner: Welsh; Maurice J.
Assistant Examiner:
Attorney, Agent or Firm:
A composition suitable for use as a binder for shredded, flexible polyurethane foams to make articles such as carpet or rug underlay comprises a polyalkylene ether polyol having from 2-4 hydroxyl groups, a minor amount by weight of a rubber extender oil, a stoichiometric excess of a certain diisocyanate and a minor amount by weight of a finely divided, solid soybean derivative. |
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DETAILED DESCRIPTION I claim: 1.
A composition of matter useful as a binder and comprising (a) 100 parts by weight of a polyalkylene ether polyol having from 2 to 4 hydroxyl groups and an average molecular weight of from about 2,000 to 4,500, (b) from about 30 to 50 parts by weight of a rubber extender oil, (c) from about 7.
5 to 25 parts by weight of a finely divided, solid soybean derivative consisting of both a proteinaceous and cellulosic fraction containing numerous --OH groups as well as reactive pendant protein groups (--COOH, --OR and --NH.
sub.
2), having a large surface to mass ratio and showing good structural geometry exhibiting elongated hexagonal polygons representing the cell walls of the soybean cotyledon from which solubles have been removed, and (d) a diisocyanate in an amount in excess of the stoichiometric amount required to react with all of the active hydrogen atoms of the polyol, and diisocyanate being selected from the group consisting of 2,4-tolylene diisocyanate, 2,6-tolylene diisocyanate, 4,4'-diphenyl methane diisocyanate, hydrogenated 4,4'-diphenyl methane diisocyanate, polymeric forms of TDI, MDI and hydrogenated MDI, xylene diisocyanate, isophorone diisocyanate and hexamethylene diisocyanate and mixtures of the same.
2.
A composition according to claim 1 wherein (a) is polypropylene ether triol having a molecular weight of from about 3,000 to 3,500, (b) is a naphthenic oil and (d) is 2,4-tolylene diisocyanate or 2,6-tolylene diisocyanate or mixture thereof.
3.
A composite cured article comprising shredded flexible polyurethane foam particles bonded together by means of a minor amount by weight as compared to said particles of binder composition comprising (a) 100 parts by weight of a polyalkylene ether polyol having from 2 to 4 hydroxyl groups and an average molecular weight of from about 2,000 to 4,500, (b) from about 30 to 50 parts by weight of a rubber extender oil, (c) from about 7.
5 to 25 parts by weight of a finely divided, solid soybean derivative consisting of both a proteinaceous and cellulosic fraction containing numerous --OH groups as well as reactive pendant protein groups (--COOH, --OR and --NH
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