Sealing Material Composition

• US 20080139734A1
• Filed: 03/18/2005
• Published: 06/12/2008
• Est. Priority Date: 03/26/2004
• Status: Abandoned Application

• Current Assignee: Kaneka Corporation
• Original Assignee: Kaneka Corporation
• Inventors: Nakashima, Tohru, Aoyama, Taizo
• Application Number:
  US10/593,788
• Publication Number:
  US 20080139734A1
• Time in Patent Office: Days
• US Class Current: 524/505
• CPC Class Codes: C03C 27/10 with the aid of adhesive specially adapted for that purpose
• CPC Class Codes: C08L 2205/02 containing two or more polymers of the same C08L -group
• CPC Class Codes: C08L 2205/035 containing four or more polymers in a blend
• CPC Class Codes: C08L 23/0815 Copolymers of ethene with aliphatic 1-olefins
• CPC Class Codes: C08L 23/10 Homopolymers or copolymers of propene
• CPC Class Codes: C08L 23/22 Copolymers of isobutene; Butyl rubber ; Homo- or copolymers of other iso-olefins
• CPC Class Codes: C08L 2312/08 by silane
• CPC Class Codes: C08L 2666/02 Organic macromolecular compounds, natural resins, waxes or and bituminous materials
• CPC Class Codes: C08L 53/02 of vinyl-aromatic monomers and conjugated dienes
• CPC Class Codes: C08L 75/04 Polyurethanes
• CPC Class Codes: C08L 83/04 Polysiloxanes
• CPC Class Codes: C09J 123/22 Copolymers of isobutene; Butyl rubber ; Homo- or copolymers of other iso-olefines
• CPC Class Codes: C09J 153/00 Adhesives based on block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Adhesives based on derivatives of such polymers
• CPC Class Codes: C09K 3/10 Materials in mouldable or extrudable form for sealing or packing joints or covers filling pastes C09D5/34

Abstract

The present invention relates to a sealing material composition comprising a novel resin composition and excellent not only in gas barrier properties but also in hot melt adhesive properties, in particular. It also relates to a sealing material made by using the above-mentioned composition, in particular a sealing material for double glazing. The present invention can be accomplished by using a sealing material composition which comprises an alkenyl group-terminated isobutylene-based polymer (A), a thermoplastic resin (B) and a compound (C) containing at least two hydrosilyl groups within the molecule thereof.

Claims

1. A sealing material composition

which comprises an alkenyl group-terminated isobutylene-based polymer (A), a thermoplastic resin (B) and a compound (C) containing at least two hydrosilyl groups within the molecule thereof.

2. The sealing material composition according to claim 1 which further comprises a carbon-carbon unsaturated bond-containing functional group-containing compound (D), which is different from the component (A).

3. The sealing material composition according to claim 2

which further comprises at least one nitrogen atom-containing compound (E) which is at least one species selected from the group consisting of amines, amides and carboxylic acid hydrazides.

4. The sealing material composition according to claim 3

wherein the alkenyl group-terminated isobutylene-based polymer (A) is crosslinked by the compound (C) containing at least two hydrosilyl groups within the molecule thereof.

5. The sealing material composition according to claim 4

wherein the alkenyl group-terminated isobutylene-based polymer (A) is dynamically crosslinked by the compound (C) containing at least two hydrosilyl groups within the molecule thereof in the step of melt kneading with the thermoplastic resin (B).

6. The sealing material composition according to claim 3

which further comprises a tackifier resin (F).

7. The sealing material composition according to claim 6

which further comprises an inorganic filler (G).

8. The sealing material composition according to claim 7

which further comprises a plasticizer (H).

9. The sealing material composition according to claim 8

which further comprises an alkoxysilane compound (I).

10. The sealing material composition according to claim 2

wherein the thermoplastic resin (B) is at least one species selected from the group consisting of thermoplastic elastomers, polyethylene, polypropylene, ethylene-α

-olefin copolymers, polyisobutylene, isobutylene-isoprene copolymers (butyl rubbers), chlorinated butyl, brominated butyl, isobutylene-(p-methylstyrene) copolymers, and brominated isobutylene-(p-methylstyrene) copolymers.

11. The sealing material composition according to claim 10

wherein the thermoplastic elastomer is a styrenic thermoplastic elastomer and/or a thermoplastic polyurethane elastomer.

12. The sealing material composition according to claim 11

wherein the styrenic thermoplastic elastomer is an isobutylene-based block copolymer (B1) composed of a polymer block (a) derived from an aromatic vinyl compound as the constituent monomer and a polymer block (b) derived from isobutylene as the constituent monomer.

13. The sealing material composition according to claim 12

wherein the isobutylene-based block copolymer (B1) is a triblock copolymer composed of a polymer block (a) derived from an aromatic vinyl compound as the constituent monomer/a polymer block (b) derived from isobutylene as the constituent monomer/a polymer block (a) derived from an aromatic vinyl compound as the constituent monomer.

14. The sealing material composition according to claim 12

wherein the isobutylene-based block copolymer (B1) is a diblock copolymer composed of a polymer block (a) derived from an aromatic vinyl compound as the constituent monomer and a polymer block (b) derived from isobutylene as the constituent monomer.

15. The sealing material composition according to claim 1

wherein the compound (C) is a polyorganohydrogensiloxane (C1) containing two or more hydrosilyl groups, on average, per molecule of the molecule thereof.

16. The sealing material composition according to claim 15

wherein the polyorganohydrogensiloxane (C1) is a polyorganohydrogensiloxane comprising 2 to 200 siloxane units.

17. The sealing material composition according to claim 2

wherein the carbon-carbon unsaturated bond-containing functional group-containing compound (D) further has at least one functional group selected from the group consisting of an epoxy group, alkoxy groups, radical polymerizable unsaturated groups, a carboxyl group, a carboxylic acid anhydride group, halogen atoms and alkoxysilyl groups.

18. The sealing material composition according to claim 17

wherein the carbon-carbon unsaturated bond-containing functional group-containing compound (D) is allyl glycidyl ether and/or monoallyl diglycidyl isocyanurate.

19. The sealing material composition according to claim 3

wherein the nitrogen atom-containing compound (E) is at least one species selected from among dicarboxylic acid hydrazides.

20. A sealing material

which comprises the sealing material composition according to claim 3.

21. (canceled)

22. (canceled)