KR960700286A - Isocyanate-Based Elastomer and Method for Manufacturing the Same (ISOCYANATE-BASED ELASTOMER AND PROCESS FOR PRODUCTION THEREOF) - Google Patents

Abstract

The present invention relates to an isocyanate-based elastomer comprising a filler, wherein the filler is present at a level of about 30% to about 90% by weight of the elastomer, with a specific gravity of less than about 2.0. The present invention also provides a method comprising the steps of providing a first mixture comprising a catalyst and a substantially inert filler material, the surface of which is wetted by the catalyst; Providing a second mixture comprising an isocyanate and an active hydrogen-comprising compound, wherein the isocyanate and active hydrogen-comprising compound are in a substantially unreacted state; Providing a reaction mixture by mixing the first mixture and the second mixture; It relates to a method for producing an isocyanate-based elastomer, comprising the step of preparing an isocyanate-based elastomer by reacting the reaction mixture.

Description

Isocyanate-Based Elastomer and Method for Manufacturing the Same (ISOCYANATE-BASED ELASTOMER AND PROCESS FOR PRODUCTION THEREOF)

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Claims (25)

Providing a first mixture consisting of a catalyst and a filler material serving as a carrier for the catalyst; Providing a second mixture composed of an isocyanate and an active hydrogen-comprising compound, wherein the isocyanate and active hydrogen-comprising compound are in a substantially unreacted state; Providing a reaction mixture by mixing the first mixture and the second mixture; Preparing an isocyanate-based elastomer by reacting the reaction mixture. The method of claim 1 wherein the active hydrogen-comprising compound is selected from the group consisting of polyols, polyamines, polyamides, polyimines and polyolamines. The method of claim 1 wherein the active hydrogen-comprising compound is a polyol. 4. The process of claim 3 wherein the polyol is a component of a hydroxyl-terminated framework selected from the group consisting of polyethers, polyesters, polycarbonates, polydienes and polycaprolactones. 4. The process of claim 3 wherein the polyol is selected from the group consisting of adipic acid-ethylene glycol polyester, poly (butylene glycol), poly (propylene glycol) and hydroxy-terminated polybutadiene. The method of claim 3 wherein the polyol is a polyether polyol. The method of claim 3 wherein the polyether polyol has a molecular weight of about 200 to about 10,000. The method of claim 1 wherein the active hydrogen-comprising compound is a polyamine or a polyalcoholamine. The method of claim 8, wherein the polyamine is selected from the group consisting of primary and secondary amine-terminated polyethers. The process of claim 1 wherein the isocyanate is represented by the general formula: Q (NCO) _i Wherein i is an integer of 2 or more and Q is an organic radical having group i. The isocyanate according to claim 1, wherein the isocyanate is 1,6-hexamethylene diisocyanate, 1,4-butylene diisocyanate, perfurylidene diisocyanate, 2,4-toluene diisocyanate, 2,6-toluene diisocyanate, 2, 4'-diphenylmethane diisocyanate, 4,4'-diphenylmethane diisocyanate, 4,4'-diphenylpropane diisocyanate, 4,4'-diphenyl-3,3'-dimethyl methane diisocyanate, 1 , 5-naphthalene diisocyanate, 1-methyl- 2, 4- diisocyanate 5- chlorobenzene, 2, 4- diisocyanato-s-triazine, 1-methyl- 2, 4- diisocyanato cyclohexane, p-phenylene diisocyanate, m-phenylene diisocyanate, 1, 4- naphthalene diisocyanate, dianisidine diisocyanate, bitolylene diisocyanate, 1, 4- xylylene diisocyanate, 1, 3- xylene diisocyanate , Switch - (4-isocyanato phenyl) methane, bis (3-methyl-4-isocyanato-phenyl) methane, polymethylene polyphenyl polyisocyanate and is selected from the group consisting of a mixture thereof. The method of claim 1 wherein the isocyanate is selected from the group consisting of 2,4-toluene diisocyanate, 2,6-toluene diisocyanate and mixtures thereof. The method of claim 1, wherein the isocyanate is selected from (i) 2,4'-diphenylmethane diisocyanate, 4,4'-diphenylmethane diisocyanate and mixtures thereof; And (ii) an isocyanate selected from the group consisting of 2,4-toluene diisocyanate, 2,6-toluene diisocyanate, and mixtures thereof, and an isocyanate selected from the group consisting of 2,6-toluene diisocyanate and mixtures thereof. A method selected from a crowd consisting primarily of a mixture of (iii). An isocyanate-based elastomer comprising a filler, wherein the filler is present at a level from about 30% to about 90% by weight of the elastomer, with a specific gravity less than about 2.0. The elastomer of claim 14, wherein the filler material is derived from a milled elastomer. 15. The elastomer of claim 14 filled with a milled elastomer. The elastomer of claim 14, wherein the milled elastomer is non-filled elastomer. 15. The elastomer of claim 14, wherein the filler material is a milled sheet molding compound. 15. The elastomer of claim 14, wherein the filler material is a milled reaction injection molded elastomer. 15. The elastomer of claim 14, wherein the filler material is a whole tire or part thereof that is regrind. 15. The elastomer of claim 14, wherein the filler material is a ground isocyanate elastomer foam. 15. The elastomer of claim 14, wherein the filler material is a regrind reinforced reaction injection molded elastomer. ※ Note: The disclosure is based on the initial application.