Glass-polycarbonate laminates

• US 4,204,026 A
• Filed: 11/21/1978
• Issued: 05/20/1980
• Est. Priority Date: 11/21/1978
• Status: Expired due to Term

• Current Assignee: General Electric Company
• Original Assignee: General Electric Company
• Inventors: Le Grand, Donald G., Vitale, Gina G.
• Primary Examiner(s): Ansher, Harold
• Application Number:
  US05/962,624
• Time in Patent Office: 546 Days
• Field of Search: 428/412, 428/447, 428/448, 428/429, 428/451, 428/911, 428/409
• US Class Current: 428/409
• CPC Class Codes: B32B 17/10005 laminated safety glass or glazing
• CPC Class Codes: B32B 17/10018 comprising only one glass sheet
• CPC Class Codes: B32B 17/10036 comprising two outer glass sheets
• CPC Class Codes: B32B 17/1033 Laminated safety glass or glazing containing temporary protective coatings or layers
• CPC Class Codes: B32B 17/10752 containing polycarbonate
• CPC Class Codes: B32B 2369/00 Polycarbonates
• CPC Class Codes: B32B 7/12 using interposed adhesives or interposed materials with bonding properties
• CPC Class Codes: C09D 183/14 in which at least two but not all the silicon atoms are connected by linkages other than oxygen atoms C09D183/10 takes precedence
• CPC Class Codes: Y10S 428/911 Penetration resistant layer
• CPC Class Codes: Y10T 428/31 Surface property or characteristic of web, sheet or block
• CPC Class Codes: Y10T 428/31507 Of polycarbonate
• CPC Class Codes: Y10T 428/31663 As siloxane, silicone or silane
• CPC Class Codes: Y10T 428/31667 Next to addition polymer from unsaturated monomers, or aldehyde or ketone condensation product

Abstract

A glass-polycarbonate laminate wherein the glass layer is bonded to a polycarbonate layer by means of a bonding system comprised of an aminoalkyl[poly(aryloxysiloxane)] primer and an organopolysiloxane-polycarbonate block copolymer bonding agent.

Claims

1. An improved laminate of glass and polycarbonate resin wherein the glass and polycarbonate resin layers are bonded together by means of an organopolysiloxane-polycarbonate copolymer adhesive layer disposed between said glass and said polycarbonate resin, the improvement comprising an adhesion promoting primer layer disposed between said glass and said organopolysiloxane-polycarbonate adhesive layer, said adhesion promoting primer layer comprising an aminoalkyl(poly(aryloxysiloxane)) represented by the general formula ##STR21## wherein u is an integer equal to from 1 to 4;

n has a value of from 5 to about 500, q has a value of from 1 to about 500;

m has a value of from 0 to 10;

A, B and C are independently selected from OH and ##STR22## radicals;

D, E and F are OH radicals, d, e and f are 0 or 1, provided that if q is 1 then all of d, e and f are 0, and further provided that if q is greater than 1 then at least one 1f A, B and C is a ##STR23## radical and the sum of d+e+f is equal to Y wherein Y has a value of from 0 to 2 which is obtained from the formula 3-W=Y wherein W is the number of ##STR24## radicals represented by A, B and C;

R is a member independently selected from the class of hydrogen, alkyl radicals, and halogenated alkyl radicals;

R¹ is a member independently selected from the class of alkyl radicals, halogenated alkyl radicals, and cyanoalkyl radicals;

Z is a member independently selected from the class of hydrogen, lower alkyl radicals, and halogen radicals; and

R² is a member selected from the class of ##STR25## wherein R⁶, R⁷ and R⁹ are independently selected from hydrogen and alkyl radicals, R⁵ and R⁸ are independently selected from alkylidene radicals, R¹⁰ represents a straight chain alkylidene radical, and R³ and R⁴ are independently selected from hydrogen, alkyl radicals, H₂ NCO--, H₂ NCH₂ CH₂ --, and H₂ NCH₂ CH₂ NCH₂ CH₂ --.

2. The laminate according to claim 1 wherein said organopolysiloxane-polycarbonate copolymer is comprised of (A) from 10 to 75 percent by weight of a polydiorganosiloxane composed of from about 5 to about 200 chemically combined diorganosiloxy units consisting essentially of dialkylsiloxy units which are connected to each other by silicon-oxygen-silicon linkages wherein each of the silicon atoms has two organo radicals attached through a carbon-silicon bond and (B) from 90 to 25 percent by weight of an intercondensation product of a dihydric phenol and a carbonyl halide, where said polydiorganosiloxane and said intercondensation product are joined by aryloxy-silicon linkages.

3. The laminate according to claim 2 wherein R² is an N-beta-(aminoethyl)gamma-aminopropyl radical.

4. The laminate according to claim 2 wherein R² is a gamma-aminopropyl radical.

5. The laminate according to claim 2 wherein said primer is disposed on the glass layer.

6. The laminate according to claim 2 comprising a core lamina of polycarbonate resin, two outer laminae of glass, an intermediate bonding layer of said organopolysiloxane-polycarbonate copolymer disposed between each of said outer glass laminae and said core polycarbonate lamina, and a primer layer of said aminoalkyl[poly(aryloxysiloxane)] disposed between said outer glass laminae and said intermediate bonding layers.

7. The laminate according to claim 2 comprising one glass lamina, one polycarbonate lamina, an intermediate bonding layer of said organopolysiloxane-polycarbonate copolymer disposed between said glass lamina and said polycarbonate resin lamina, and a primer layer of said aminoalkyl[poly(aryloxysiloxane)] disposed between said glass lamina and said intermediate bonding layer.

8. The laminate according to claim 7 and further including a hard mar resistant coating bonded to the outer exposed surface of said polycarbonate lamina.