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US 5,308,657 AGranted
Protection of furniture edging
AssigneeMiles Inc.
InventorsPeter H. Markusch, Hans-Joachim Kogelnik, Jeffrey F. Dormish, Norbert Adam
Life of this patent
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Abstract
The invention is directed to a process for protecting the edges of a panel by applying a non-sagging polyurethane composition to the edges of said panel, and allowing the composition to cure.
Claims6
A process for protecting the edges of a panel wherein said panel consists of wood or wood by-products, said process comprising:
- a) applying a non-sagging polyurethane composition to the edges of said panel,
- b) shaping said composition to the desired final shape or form, and
- c) allowing said composition to cure,
- wherein said non-sagging polyurethane composition is prepared by mixing:
- 1) a liquid polymethylene poly(phenyl isocyanate) having an isocyanate group content of from about 15 to 32% by weight and a viscosity of less than 15,000 mPa.s at 25.degree. C,
- with
- 2) a liquid isocyanate reactive mixture comprising:
- i) from 40 to 95 parts by weight of one or more hydroxyl group containing compounds containing from 2 to 8 hydroxyl groups and having a molecular weight of from about 450 to about 6000,
- ii) from 1 to 10 parts by weight of one or more organic di- or polyamines,
- iii) from 0 to 50 parts by weight of one or more low molecular weight diols or triols having hydroxyl equivalent weights of about 100 or less,
- and
- iv) from 0 to 2.0 parts by weight of water,
- wherein said parts by weight total 100, and wherein the amount of component 1) and component 2) are such that the equivalent ratio of isocyanate groups to hydroxyl and amine groups is from 0.8:1 to 2:1.
10 more elements
Dependencies are inferred from the claim text.