Composite structure

• US 20080038549A1
• Filed: 08/14/2006
• Published: 02/14/2008
• Est. Priority Date: 08/14/2006
• Status: Abandoned Application

• Current Assignee: Momentive Performance Materials Incorporated (Momentive Performance Materials Holdings LLC)
• Original Assignee: General Electric Company
• Inventors: Fahrenkopf, Timothy J., McKeon, Francis J., Ramdatt, Philbert E., Griswold, Roy M.
• Application Number:
  US11/504,564
• Publication Number:
  US 20080038549A1
• Time in Patent Office: Days
• US Class Current: 428/343
• CPC Class Codes: C08J 3/24 Crosslinking, e.g. vulcanising, of macromolecules mechanical aspects B29C35/00; crosslinking agents C08K
• CPC Class Codes: C08L 2666/04 Macromolecular compounds according to groups C08L7/00 - C08L49/00, or C08L55/00 - C08L57/00; Derivatives thereof
• CPC Class Codes: C09J 201/08 Carboxyl groups
• CPC Class Codes: Y10T 428/24926 including ceramic, glass, porcelain or quartz layer
• CPC Class Codes: Y10T 428/28 Web or sheet containing structurally defined element or component and having an adhesive outermost layer

Abstract

A composite structure comprising at least one transparent or translucent panel member having at least two surfaces to said panel member wherein at least one of said surfaces has a adhesive and/or sealant comprising a hot melt vulcanizate composition disposed on at least a portion thereof; wherein said hot melt vulcanizate composition is made by the process comprising: In one embodiment herein there is provided a hot melt vulcanizate composition made by the process comprising:

• • a) producing a reaction product (i) from (1) at least one first resin selected from the group consisting of thermoplastic polymer and elastomeric polymer, (2) at least one unsaturated carboxylic acid anhydride, (3) at least one alkylamine possessing two or more amine functionalities, and optionally (4) at least one free-radical generating catalyst, and wherein said reaction product (i) optionally further comprises, at least one first additive; and, optionally,
  • b) blending said reaction product (i) with at least one second resin selected from the group consisting of thermoplastic polymer and elastomeric polymer, provided that at least one of second resin is different from at least one of first resin and, optionally, at least one second additive;
  • c) curing said reaction product (i), wherein reaction product (i) has been blended as in (b) above, or not, to produce a hot melt vulcanizate composition; and, optionally,
  • d) adding at least one third additive to the hot melt vulcanizate composition; wherein a composite structure is comprised of said panel member.

Claims

1. A composite structure comprising:

at least one transparent or translucent panel member having at least two surfaces to said panel member wherein at least one of said surfaces has a adhesive and/or sealant comprising a hot melt vulcanizate composition disposed on at least a portion thereof;

wherein said hot melt vulcanizate composition is made by the process comprising;

a) producing a reaction product (i) from (1) at least one first resin selected from the group consisting of thermoplastic polymer and elastomeric polymer, (2) at least one unsaturated carboxylic acid anhydride, (3) at least one alkylamine possessing two or more amine functionalities, and optionally (4) at least one free-radical generating catalyst, and wherein said reaction product (i) optionally further comprises, at least one first additive; and

, optionally,

b) blending said reaction product (i) with at least one second resin selected from the group consisting of thermoplastic polymer and elastomeric polymer, provided that at least one of second resin is different from at least one of first resin and, optionally, at least one second additive;

c) curing said reaction product (i), wherein reaction product (i) has been blended as in (b) above, or not, to produce a hot melt vulcanizate composition; and

, optionally,

d) adding at least one third additive to the hot melt vulcanizate composition;

wherein a composite structure is comprised of said panel member.

2. The composite structure of claim 1, possessing at least two panel members.

3. The composite structure of claim 1, wherein panel member is glass and/or plastic.

4. The composite structure of claim 1, wherein composite structure is selected from the group consisting of window, window glazing, an insulated thermal (i.e., window) unit and combinations thereof.

5. The composite structure of claim 1, wherein the composite structure is partially or completely assembled at a site of installation.

6. The composite structure of claim 5, wherein the composite structure is a window or thermal unit.

7. The composite structure of claim 1, wherein the thermoplastic polymer of first and second resin is selected from the group consisting of homopolymers and copolymers of polypropylene, polyethylene, polystyrene, acrylonitrile butadiene styrene, styrene acrylonitrile, polymethylmethacrylate, polyester, polycarbonate, polyamide, polyphenylene ether, polyphenylene oxide and combinations thereof.

8. The compsite structure of claim 1, wherein the elastomeric polymer of first and second resin is selected from the group consisting of of ethylene propylene copolymer, ethylene propylene diene terpolymer, butyl rubber, natural rubber, chlorinated polyethylene, silicone rubber, isoprene rubber, butadiene rubber, styrene-butadiene rubber, SEBS, ethylene-vinyl acetate, ethylene butylacrylate, ethylene methacrylate, ethylene ethylacrylate, ethylene-alpha-olefin copolymers, high density polyethylene, nitrile rubber and combinations thereof.

9. The composite structure of claim 1, wherein the carboxylic acid anhydride (2) is selected from the group consisting of isobutenylsuccinic, (+/−

)-2-octen-1-ylsuccinic, itaconic, 2-dodecen-1-ylsuccinic, cis-1,2,3,6-tetrahydrophthalic, cis-5-norbornene-endo-2,3-dicarboxylic, endo-bicyclo[2.2.2]oct-5-ene-2,3-dicarboxylic, methyl-5-norbornene-2,3-carboxylic, exo-3,6-epoxy-1,2,3,6-tetrahydrophthalic, maleic, citraconic, 2,3 dimethylmaleic, 1-cyclopentene-1,2-dicarboxylic, 3,4,5,6-tetrahydrophthalic; and

combinations thereof.

10. The composite structure of claim 1, wherein the alkylamine possessing two or more amine functionalities (3) has the general formula (I):

R¹₂N—

R—

NR²₂ 

 

(I)

wherein R is a linear, branched or cyclic divalent alkylene group containing from 1 to about 20 carbon atoms, said divalent alkylene group optionally containing at least one interposed amine group;

each R¹ and R² is independently hydrogen, or the same or different linear or branched alkyl group of from 1 to about 8 carbon atoms.

11. The composite structure of claim 10 wherein the alkylene group contains from 2 to about 12 carbon atoms.

12. The composite structure of claim 10 wherein the alkylene group contains from 2 to about 8 carbon atoms.

13. The composite structure of claim 1 wherein the alkylamine (3) comprises at least one of a polyoxypropylene diamine and a polyoxypropylene dialkyldiamine.

14. The composite structure of claim 1 wherein the alkylamine possessing two or more amine functionalities is selected from the group consisting of 5-amino-1,3,3-trimethylcyclohexanemethylamine, 1,4-diaminocyclohexane, 1,3-propanediamine, 1,3-pentanediamine, isophoronediamine, diethylenetriamine, triethylenetetramine, trimethylhexamethylenediamine, N,N′

-dimethylethylenediamine, N,N′

-diethyl-1,3-propanediamine, bis(aminomethyl)cyclohexylamine, bis(p-aminocyclohexyl)methane, 2,2′

-dimethylbis(p-aminocyclohexyl)methane, 1,2-diaminocyclohexane, metaxylenediamine, norbornanediamine, diethyltoluenediamine, 1,7-diaminoheptane, polyoxypropylene diethyldiamine, N,N′

-diethyl-isophoronediamine and combinations thereof.

15. The composite structure of claim 1 wherein free radical generating catalyst (4) is selected from the group consisting of water soluble peroxides, oil soluble peroxides and combinations thereof.

16. The composite structure of claim 1 wherein the first, second, and/or third additive is selected from the group consisting of tackifier, plasticizer, silane adhesion promoter, condensation catalyst, other component and combinations thereof.

17. The composite structure of claim 16 wherein tackifier is selected from the group consisting of partially or fully hydrogenated cycloaliphatic petroleum hydrocarbon resins, partially or fully hydrogenated aromatic modified petroleum hydrocarbon resins;

aliphatic-aromatic petroleum hydrocarbon resins;

styrenated terpene resins made from d-limonene and alpha-methylstyrene resins; and

combinations thereof.

18. The composite structure of claim 16 wherein silane adhesion promoter is of the general formula:

(Y_aZB)_cSi(OR)_b(X)<sub>4−

(b+c)</sub>,

wherein a=0 to 2, b=1 to 3, c=1 to 3, with the proviso that b+c is less than or equal to 4, each Y may independently be selected from hydrogen, an alkyl, alkenyl, hydroxy alkyl, alkaryl, alkylsilyl, alkylamine, C(═

O)OR or C(═

O)NR, C(═

O)R, alkylepoxy, Z is N or S or B, R is an acyl, alkyl, aryl or alkaryl, X is R or a halogen wherein R is a monovalent alkyl, B is a divalent straight chain, branched chain, cyclic hydrocarbon, aryl, alkylaryl or combination thereof bridging group, or B may contain at least one heteroatom bridge.

19. The composite structure of claim 16 wherein other component is selected from the group consisting of UV stabilizers, antioxidants, metal deactivators, processing aids, waxes, fillers, colorants, blowing agents and combinations thereof.

20. The composite structure of claim 1 wherein blending is conducted as a continuous process.

21. The composite structure of claim 1 wherein blending is conducted in a screw type mixer-extruder.

22. The composite structure of claim 1 wherein adhesive and/or sealant is a hot melt adhesive.

23. The composite structure of claim 22 wherein the adhesive and/or sealant has a reduced level of volatiles.

24. The composite structure of claim 22 wherein the adhesive and/or sealant has a level of volatile materials of less than about 10% by weight of the weight of the vulcanizate composition.

25. The composite structure of claim 22 wherein the adhesive and/or sealant has an amount of fugitive peroxides present in the hot melt vulcanizate composition that is less than an equivalent hot melt vulcanizate composition that does not contain an amine (4).

26. The composite structure of claim 22 wherein the adhesive and/or sealant has a level of fugitive peroxides present in the hot melt vulcanizate composition of 25% less than an equivalent hot melt vulcanizate composition that does not contain an amine.