ZEOLITHS WITH IMPROVED COMPATIBILITY

Abstract

ENHANCED COMPATIBILITY ZEOLITHS The invention relates to modified zeolite crystals comprising zeolite crystals and 0.5% to 20%, by weight, including terminals, relative to the total weight of modified zeolite crystals, of at least one polymer compatibilizing agent, in particular a functional polyolefin. The invention also relates to the use of the modified zeolite crystals according to the invention as a filler in a polymer matrix, for example, for the preparation of composite materials. Figure to be published with the abstract: None

Claims

Claims

1. Modified zeolite crystals comprising zeolite crystals and from 0.5% to 20%, preferably from 0.5% to 15%, more preferably from 1% to 10%, and advantageously from 1% to 5%, by weight, inclusive, relative to the total weight of modified zeolite crystals, of at least one polymeric compatibilizing agent, said at least one polymeric compatibilizing agent being a functional polyolefin, said crystals being in the form of free crystals or in the form of friable aggregates of crystals.

2. Modified crystals according to claim 1, wherein the zeolite crystals are zeolitic adsorbent materials selected from LTA type zeolites, FAU type zeolites, MFI type zeolites, P zeolites, SOD type zeolites, MOR type zeolites, CHA type zeolites, HEU type zeolites, and mixtures of two or more of them in any proportions.

3. Modified crystals according to claim 1 or claim 2, wherein the zeolite crystals have a number average size of between 0.05 pm and 20 pm, preferably between 0.1 pm and 20 pm, more preferably between 0.1 pm and 10 pm, advantageously between 0.2 pm and 10 pm, more preferably between 0.3 pm and 8 pm, more preferably between 0.5 pm and 5 pm.

4. Modified crystals according to any one of the preceding claims, wherein the compatibilizing agent has a melt flow index greater than 250 g / 10 min, measured according to ASTM D1238 (190°C, 2.16 kg), preferably between 250 g / 10 min and 1000 g / 10 min, more preferably between 300 g / 10 min and 950 g / 10 min, more preferably between 500 g / 10 min and 900 g / 10 min and, most preferably, between 550 g / 10 min and 900 g / 10 min.

5. Modified crystals according to any one of the preceding claims, wherein the melting temperature of said compatibilizing agent is less than 150°C, more preferably less than 120°C, advantageously less than 110°C, and more preferably less than 100°C.

6. Modified crystals according to any one of the preceding claims, in which the compatibilizing agent is chosen from homopolymers or copolymers of alpha-olefins or diolefins, optionally but preferably functionalized by one or several functional groups, chosen from unsaturated carboxylic or dicarboxylic acid anhydrides and unsaturated epoxides, copolymers of olefins with functionalized comonomers.

7. Modified crystals according to any one of the preceding claims, having a number average size of between 0.07 pm and 25 pm, preferably between 0.1 pm and 20 pm, more preferably between 0.1 pm and 10 pm, advantageously between 0.2 pm and 10 pm, more preferably between 0.3 pm and 8 pm, better still between 0.5 pm and 5 pm.

8. Use of the modified crystals according to any one of the preceding claims, as filler in a polymer matrix.

9. Use according to claim 8 as fillers in polymer matrices for applications in the fields of double glazing, coating compositions, ready-to-polymerize formulations, ready-to-crosslink formulations, but also for applications as filler in materials with reinforced mechanical, flame-retardant, sound-proofing properties, as well as for applications in the electrical and electronic fields.

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