Transparent Colored High Modulus Interlayers and Laminates Therefrom

• US 20080302461A1
• Filed: 06/08/2007
• Published: 12/11/2008
• Est. Priority Date: 06/08/2007
• Status: Abandoned Application

• Current Assignee: E. I. du Pont de Nemours and Company (Corteva, Inc.)
• Original Assignee: E. I. du Pont de Nemours and Company (Corteva, Inc.)
• Inventors: Hayes, Richard Allen, Smith, Rebecca L., Samuels, Sam Louis, Phillips, Thomas R.
• Application Number:
  US11/760,468
• Publication Number:
  US 20080302461A1
• Time in Patent Office: Days
• US Class Current: 156/99
• 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 17/10339 Specific parts of the laminated safety glass or glazing being colored or tinted tinted glass sheet B32B17/1011; tinted interlayer B32B17/10651
• CPC Class Codes: B32B 17/10743 containing acrylate (co)polymers or salts thereof
• CPC Class Codes: B32B 2367/00 Polyesters, e.g. PET, i.e. polyethylene terephthalate
• CPC Class Codes: C08J 2323/08 Copolymers of ethene C08J2323/16 takes precedence
• CPC Class Codes: C08J 2423/00 Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
• CPC Class Codes: C08J 2423/08 Copolymers of ethene C08J2423/16 takes precedence
• CPC Class Codes: C08J 3/226 using a polymer as a carrier
• CPC Class Codes: C08K 3/013 Fillers, pigments or reinforcing additives
• CPC Class Codes: C08K 5/0041 Optical brightening agents, organic pigments
• CPC Class Codes: C08L 2205/02 containing two or more polymers of the same C08L -group
• CPC Class Codes: C08L 23/0876 Neutralised polymers, i.e. ionomers
• CPC Class Codes: C08L 2666/06 Homopolymers or copolymers of unsaturated hydrocarbons; Derivatives thereof

Abstract

A process for preparing a transparent laminate comprising a colored interlayer and a rigid sheet, comprising: (a) forming a color concentrate comprising a thermoplastic ionomer copolymer and about 1 to about 10 wt % (based on the total weight of the color concentrate) of pigment by: (i) combining (a) one or more colored master batch, each comprising about 50 to about 80 wt % (based upon the weight of the master batch) a thermoplastic matrix polymer and about 20 to about 50 wt % (based on the weight of the master batch) of pigment, and (b) one or more thermoplastic ionomer copolymer; and (ii) melt mixing the one or more colored master batch and the one or more thermoplastic ionomer copolymer at a temperature above the melting points of the thermoplastic ionomer copolymer and the thermoplastic matrix polymer; (b) forming an interlayer composition comprising thermoplastic ionomer copolymer and about 0.01 to about 3 wt % (based upon the weight of the thermoplastic ionomer copolymer and pigment in the interlayer composition) pigment by: (i) combining the color concentrate and thermoplastic ionomer copolymer; and (ii) melt mixing the color concentrate and the thermoplastic ionomer copolymer at a temperature above the melting point of the thermoplastic ionomer copolymer; and (c) forming a colored thermoplastic interlayer sheet comprising thermoplastic ionomer copolymer and about 0.01 to about 3 wt % (based upon the weight of the ionomer and pigment in the interlayer) pigment by extruding the interlayer composition into the interlayer sheet; and (d) preparing a laminate comprising the colored thermoplastic interlayer and a rigid sheet; wherein by thermoplastic ionomer copolymer is meant a thermoplastic copolymer of an alpha-olefin having 2 to 10 carbon atoms and about 15 to about 30 wt % (based on the total weight of the ionomer copolymer) of an alpha, beta-ethylenically unsaturated carboxylic acid having 3 to 8 carbons, wherein about 5 to about 90% of the carboxylic acids are neutralized with a metal ion. In addition, ionomer/pigment master batch.

Claims

1. A process for preparing a transparent laminate comprising a colored interlayer and a rigid sheet, comprising:

(a) forming a color concentrate comprising a thermoplastic ionomer copolymer and about 1 to about 10 wt % (based on the total weight of the color concentrate) of pigment by;

(i) combining (a) one or more colored master batch, each comprising about 50 to about 80 wt % (based upon the weight of the master batch) a thermoplastic matrix polymer and about 20 to about 50 wt % (based on the weight of the master batch) of pigment, and (b) one or more thermoplastic ionomer copolymer; and

(ii) melt mixing the one or more colored master batch and the one or more thermoplastic ionomer copolymer at a temperature above the melting points of the thermoplastic ionomer copolymer and the thermoplastic matrix polymer;

(b) forming an interlayer composition comprising about 97 to about 99.9 wt % (based upon the weight of the ionomer and pigment in the interlayer composition) thermoplastic ionomer copolymer and about 0.01 to about 3 wt % (based upon the weight of the thermoplastic ionomer copolymer and pigment in the interlayer composition) pigment by;

(i) combining the color concentrate and thermoplastic ionomer copolymer; and

(ii) melt mixing the color concentrate and the thermoplastic ionomer copolymer at a temperature above the melting point of the thermoplastic ionomer copolymer; and

(c) forming a colored thermoplastic interlayer sheet comprising about 97 to about 99.9 wt % (based upon the weight of the ionomer and pigment in the interlayer composition) thermoplastic ionomer copolymer and about 0.01 to about 3 wt % (based upon the weight of the ionomer and pigment in the interlayer) pigment by extruding the interlayer composition into the interlayer sheet; and

(d) preparing a laminate comprising the colored thermoplastic interlayer and a rigid sheet;

wherein by thermoplastic ionomer copolymer is meant a thermoplastic copolymer of an alpha-olefin having 2 to 10 carbon atoms and about 15 to about 30 wt % (based on the total weight of the ionomer copolymer) of an alpha, beta-ethylenically unsaturated carboxylic acid having 3 to 8 carbons, wherein about 5 to about 90% of the carboxylic acids are neutralized with a metal ion.

2. The process of claim 1 wherein the thermoplastic matrix polymer is a thermoplastic ionomer copolymer of an alpha-olefin having 2 to 10 carbon atoms and about 15 to about 30 wt % (based on the total weight of the ionomer copolymer) of an alpha, beta-ethylenically unsaturated carboxylic acid having 3 to 8 carbons, wherein about 5 to about 90% of the carboxylic acids are neutralized with a metal ion and wherein each of the melt mixing steps is conducted at a temperature from about 110°

C. to about 250°

C.

3. The process of claim 1 wherein the thermoplastic matrix polymer is poly(vinyl butyral) and wherein each of the melt mixing steps is conducted at a temperature from about 110°

C. to about 250°

C.

5. The process of claim 1 wherein (a) the interlayer composition comprises about 0.1 to about 2 weight % pigment, based on the weight of the interlayer composition, (b) the colored interlayer comprises about 0.1 to about 2 weight % pigment, based on the weight of the colored thermoplastic interlayer, and (c) the color concentrate comprises about 0.3 to about 5 weight % pigment, based on the weight of the color concentrate.

6. The process of claim 1 wherein the pigment primary particle diameter size is between about 1 to about 200 nanometers (nm).

7. The process of claim 1 wherein the laminates have about 20% to 100% transmission.

8. The process of claim 1 wherein laminate has about 90 to 100% clarity.

9. The process of claim 7 wherein laminate has about 95 to 100% clarity.

11. The process of claim 1 wherein each of the melt mixing steps is conducted at a temperature from about 110°

C. to about 250°

C.

12. The process of claim 1 wherein each of the melt mixing steps are conducted at a temperature from about 180°

C. to about 250°

C.

13. The process of claim 1 wherein the colored interlayer is adhered directly to the rigid sheet.

14. The process of claim 1 wherein the rigid sheet is a glass sheet.

15. The process of claim 6 wherein the rigid sheet is a glass sheet.

16. The process of claim 1 wherein the preparing a laminate comprising the colored thermoplastic interlayer and a rigid sheet comprises forming a pre-laminate assembly of the colored thermoplastic interlayer between the rigid sheet and a second rigid sheet, and laminating the pre-laminate assembly using heat.

17. The process of claim 1 wherein the preparing a laminate comprising the colored thermoplastic interlayer and a rigid sheet comprises forming a pre-laminate assembly of the colored thermoplastic interlayer and at least one other interlayer sheet between the rigid sheet and a second rigid sheet, and laminating the pre-laminate assembly using heat.

18. The process of claim 1 wherein the laminate is formed by forming a pre-laminate assembly comprising in order the rigid sheet, the colored thermoplastic interlayer, a polyester film, a second interlayer sheet and a second rigid sheet, and laminating the pre-laminate assembly using heat.

19. The process of claim 1 wherein the laminate is formed by forming a pre-laminate assembly comprising in order the rigid sheet, the colored thermoplastic interlayer, a polyester film, and laminating the pre-laminate assembly using heat.

20. The process of claim 1 wherein the colored thermoplastic interlayer is in the form of a monolayer sheet with a thickness of about 10 to about 250 mils (0.25-6.35 mm).

21. The process of claim 1 wherein the thermoplastic ionomer copolymer is prepared from (a) an alpha olefin selected from the group consisting of ethylene, propylene, 1-butene, 1-pentene, 1-hexene, 1-heptene, 3-methyl-1-butene, 4-methyl-1-pentene and mixtures thereof, and (b) an alpha, beta-ethylenically unsaturated carboxylic acid comonomer selected from the group consisting of acrylic acid, methacrylic acid, itaconic acid, maleic acid, maleic anhydride, fumaric acid, monomethyl maleic acid and mixtures thereof.

22. The process of claim 1 wherein the thermoplastic ionomer copolymer is prepared from (a) ethylene and (b) acrylic acid, methacrylic acid or mixtures thereof.

23. The process of claim 1 wherein the pigment is selected from the group consisting of PB 60, PR202, PR264, PY151, PB 15.3, PR 122, PV 19, PY181, PV19, PR254, PV 15.1, PG 7, PB29, PB15.6, PY129, PY109, PY42, PB7, PB15:

4, DPP/QA pigment, PR209, PR202, PR149 and combinations thereof.

24. The process of claim 1 wherein the pigment is selected from the group consisting of PY42, PB7, PB15:

4, DPP/QA pigment, PR209, PR202, PR149 and combinations containing at least one thereof.

25. The process of claim 1 wherein the colored master batch is selected from the group consisting of cyan, magenta and yellow primary color master batch.

26. The process of claim 1 wherein the colored master batch is a master batch selected from the group consisting of cyan, magenta, yellow and black primary color master batches.

4. A process for preparing a transparent laminate comprising a colored interlayer and a rigid sheet, comprising:

(a) forming a color concentrate consisting essentially of (I) about 90 to about 99 wt % (based on the total weight of the ionomer and pigment in the color concentrate) of an thermoplastic ionomer copolymer, (II) about 1 to about 10 wt % (based on the total weight of the ionomer and pigment in the color concentrate) of pigment, and (III) 0 to about 5 wt % (based on the total weight of the color concentrate) optional additives by;

(i) combining (a) one or more colored master batch, each comprising about 50 to about 80 wt % (based upon the weight of the ionomer and pigment in the master batch) a thermoplastic ionomer copolymer and about 20 to about 50 wt % (based on the weight of the ionomer and pigment in the master batch) of pigment, and (b) one or more thermoplastic ionomer copolymer; and

(ii) melt mixing the one or more colored master batch and the one or more thermoplastic ionomer copolymer at a temperature above the melting point of the thermoplastic ionomer copolymer;

(b) forming an interlayer composition consisting essentially of (I) about 97 to about 99.9 wt % (based upon the weight of the ionomer and pigment in the interlayer composition) thermoplastic ionomer copolymer, (II) about 0.01 to about 3 wt % (based upon the weight of the ionomer and pigment in the interlayer composition) pigment, and (III) 0 to about 5 wt % (based on the total weight of the interlayer composition) optional additives by;

(i) combining the color concentrate and thermoplastic ionomer copolymer; and

(ii) melt mixing the color concentrate and the thermoplastic ionomer copolymer at a temperature above the melting point of the thermoplastic ionomer copolymer; and

(c) forming a colored thermoplastic interlayer sheet consisting essentially of (I) about 97 to about 99.9 wt % (based upon the weight of the ionomer and pigment in the interlayer) thermoplastic ionomer copolymer, (II) about 0.01 to about 3 wt % (based upon the weight of the ionomer and pigment in the interlayer) pigment by extruding the interlayer composition into the interlayer sheet, and (III) 0 to about 5 wt % (based on the total weight of the colored thermoplastic interlayer sheet of optional additives; and

(d) preparing a laminate comprising the colored thermoplastic interlayer and a rigid sheet;

wherein by thermoplastic ionomer copolymer is meant a thermoplastic copolymer of an alpha-olefin having 2 to 10 carbon atoms and about 15 to about 30 wt % (based on the total weight of the ionomer copolymer) of an alpha, beta-ethylenically unsaturated carboxylic acid having 3 to 8 carbons, wherein about 5 to about 90% of the carboxylic acids are neutralized with a metal ion.

10. The process of claim 4 wherein (a) the interlayer composition contains about 0.01 to about 0.5 weight % pigment, based on the weight of the ionomer and pigment in the interlayer composition, (b) the colored interlayer contains about 0.01 to about 0.5 weight % pigment, based on the weight of the ionomer and pigment in the colored interlayer.

27. A colored master batch comprising:

(a) about 50 to about 80 wt % (based on the total weight of the colored master batch) of (i) an ionomer copolymer of an alpha-olefin and about 15 to about 30 wt % (based on the total weight of the ionomer copolymer) of an alpha, beta-ethylenically unsaturated carboxylic acid, wherein about 5 to about 90% of the carboxylic acids are neutralized with a metal ion; and

(b) about 20 to about 50 wt % (based on the total weight of the colored master batch) pigment.

28. A transparent, colored thermoplastic interlayer sheet comprising about 97 to about 99.9 wt % (based upon the weight of the thermoplastic ionomer copolymer and pigment in the interlayer composition) thermoplastic ionomer copolymer and about 0.01 to about 3 wt % (based upon the weight of the thermoplastic ionomer copolymer and pigment in the interlayer) pigment, wherein the thermoplastic ionomer copolymer is thermoplastic copolymer of an alpha-olefin having 2 to 10 carbon atoms and about 15 to about 30 wt % (based on the total weight of the ionomer copolymer) of an alpha, beta-ethylenically unsaturated carboxylic acid having 3 to 8 carbons, wherein about 5 to about 90% of the carboxylic acids are neutralized with a metal ion, wherein the interlayer sheet has about 90 to 100% clarity.

29. A transparent laminate comprising a colored thermoplastic interlayer sheet and a rigid sheet, the colored thermoplastic interlayer sheet comprising about 97 to about 99.9 wt % (based upon the weight of the thermoplastic ionomer copolymer and pigment in the interlayer composition) thermoplastic ionomer copolymer and about 0.01 to about 3 wt % (based upon the weight of the thermoplastic ionomer copolymer and pigment in the interlayer) pigment, wherein the thermoplastic ionomer copolymer is thermoplastic copolymer of an alpha-olefin having 2 to 10 carbon atoms and about 15 to about 30 wt % (based on the total weight of the ionomer copolymer) of an alpha, beta-ethylenically unsaturated carboxylic acid having 3 to 8 carbons, wherein about 5 to about 90% of the carboxylic acids are neutralized with a metal ion, wherein the laminate has about 90 to 100% clarity.