Patent US4643937A successfully refreshed from Google Patents.
US4643937A
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Laminate formed from a polyarylate sheet and a polycarbonate and/or polyester sheet
Assignee: Syensqo Specialty Polymers USA LLC
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Filing: 1985-02-27
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Granted: 1987-02-17
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Expires: 2005-02-27
Abstract
Abstract Described herein are laminates formed from a layer of a polyarylate sheet and a layer of an aromatic polycarbonate, a polyester, or mixtures of these resin sheets. These laminates are suitable for use in glazing applications.
Inventors
- 👤 Barry L. Dickinson
- 👤 Lloyd M. Robeson
- 👤 Marvin E. Sauers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:59
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; B32B27/36; B32B27/28; B32B27/365; B32B2272/00; Y; Y10; Y10S; Y10S148/00; Y10S148/154; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/24967; Y10T428/31504; Y10T428/31507; Y10T428/31786
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
91 words
A laminate comprising a layer of a polyarylate sheet, said polyarylate derived from a dihydric phenol and an aromatic dicarboxylic acid, and a layer of a sheet of a thermoplastic aromatic polycarbonate, a thermoplastic polyester derived from an aliphatic or cycloaliphatic diol, or mixtures thereof, and at least one aromatic dicarboxylic acid, or mixtures of the polycarbonate and polyester, the sheets which form the layers being from about 1 mil to about 100 mils thick for the polyarylate and from about 2 mils to 1/2-inch thick for the polycarbonate and/or polyester.
Claim 2
Dependent Claim
91 words
A laminate comprising a layer of a polyarylate sheet, said polyarylate derived from a dihydric phenol and an aromatic dicarboxylic acid, and a layer of a sheet of a thermoplastic aromatic polycarbonate, a thermoplastic polyester derived from an aliphatic or cycloaliphatic diol, or mixtures thereof, and at least one aromatic dicarboxylic acid, or mixtures of the polycarbonate and polyester, the sheets which form the layers being from about 1 mil to about 100 mils thick for the polyarylate and from about 2 mils to 1/2-inch thick for the polycarbonate and/or polyester.
Claim 3
Dependent Claim
18 words
A laminate as defined in claim 1 which is from about 30 mils to about 1/2 inch thick.
Claim 4
Dependent Claim
18 words
A laminate as defined in claim 2 which is from about 40 mils to about 90 mils thick.
Claim 5
Dependent Claim
87 words
A laminate as defined in claim 1 wherein the dihydric phenol is of the following formula: ##STR8## wherein Y is independently selected from, hydrogen, alkyl groups of 1 to 4 carbon atoms, chlorine or bromine, each a, independently, has a value of from 0 to 4, inclusive, and R 1 is a divalent saturated or unsaturated aliphatic hydrocarbon radical having from 1 to 6 carbon atoms, or a cycloalkylidene or cycloalkylene radicals having up to and including 9 carbon atoms, O, CO, SO 2 , or S.
Claim 6
Dependent Claim
22 words
A laminate as defined in claim 1 wherein the aromatic dicarboxylic acid is selected from terephthalic acid, isophthalic acid, or mixtures thereof.
Claim 7
Dependent Claim
28 words
A laminate as defined in claim 1 wherein the dihydric phenol is bisphenol-A and the aromatic dicarboxylic acid is selected from terephthalic acid, isophthalic acid, or mixtures thereof.
Claim 8
Dependent Claim
32 words
A laminate as defined in claim 1 wherein the polyarylate is derived from a mixture of bisphenol-A and hydroquinone and a dicarboxylic acid selected from terephthalic acid, isophthalic acid, or mixtures thereof.
Claim 9
Dependent Claim
14 words
A laminate as defined in claim 1 wherein the polyarylate is a polyarylate carbonate.
Claim 10
Dependent Claim
21 words
A laminate as defined in claim 1 wherein the aromatic polycarbonate is derived from a dihydric phenol and a carbonate precursor.
Claim 11
Dependent Claim
13 words
A laminate as defined in claim 9 wherein the dihydric phenol is bisphenol-A.
Claim 12
Dependent Claim
17 words
A laminate as defined in claim 9 wherein the aromatic polycarbonate is derived from bisphenol-A and phosgene.
Claim 13
Dependent Claim
14 words
A laminate as defined in claim 9 wherein the polycarbonate is a polyester carbonate.
Claim 14
Dependent Claim
27 words
A laminate as defined in claim 1 wherein the polyester has repeating units of the formula: ##STR9## wherein n is an integer of from 2 to 10.
Claim 15
Dependent Claim
13 words
A laminate as defined in claim 1 wherein the polyester is poly(ethylene terephthalate).
Claim 16
Dependent Claim
54 words
A laminate as defined in claim 1 wherein the polyester has recurring units of the formula: ##STR10## wherein the cyclohexane ring is selected from the cis- and trans-isomers thereof and R 17 represents an aryl radical containing 6 to 20 carbon atoms and which is the decarboxylated residue derived from an aromatic dicarboxylic acid.
Claim 17
Dependent Claim
17 words
A laminate as defined in claim 1 wherein the polyester has recurring units of the formula: ##STR11##
Claim 18
Dependent Claim
17 words
A laminate as defined in claim 1 wherein the polyarylate is blended with polycarbonate and/or a polyester.
Claim 19
Dependent Claim
16 words
A laminate as defined in claim 1 wherein the polyarylate is blended with a poly(ethylene terepthalate).
Claim 20
Dependent Claim
17 words
A laminate as defined in claim 1 wherein the polycarbonate and/or polyester is blended with a polyarylate.
Claim 21
Dependent Claim
55 words
A laminate comprising a sheet made from a layer of a polymer which undergoes Photo-Fries rearrangement and a sheet made from a layer of a thermoplastic aromatic polycarbonate, a thermoplastic polyester derived from an aliphatic or cycloaliphatic diol, or mixtures thereof, and at least one aromatic dicarboxylic acid, or mixtures of the polycarbonate and polyester.
Claim 22
Dependent Claim
55 words
A laminate comprising a sheet made from a layer of a polymer which undergoes Photo-Fries rearrangement and a sheet made from a layer of a thermoplastic aromatic polycarbonate, a thermoplastic polyester derived from an aliphatic or cycloaliphatic diol, or mixtures thereof, and at least one aromatic dicarboxylic acid, or mixtures of the polycarbonate and polyester.
Claim 23
Dependent Claim
18 words
A laminate as defined in claim 20 wherein the polymer which undergoes the Photo-Fries rearrangement is a polyarylate.
Claim 24
Dependent Claim
10 words
A shaped article made from the laminate of claim 1.
Claim 25
Dependent Claim
14 words
A shaped article as defined in claim 22 in the form of a lens.
Claim 26
Dependent Claim
14 words
A shaped article as defined in claim 22 in the form of a globe.
Claim 27
Dependent Claim
13 words
A laminate as defined in claim 1 coated with a mar resistance coating.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-02-16 | 1990-08-18 | 1991-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-02-16 | 1994-08-18 | 1995-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-02-16 | 1998-08-18 | 1999-02-17 | $7700.00 | Window Closed / Lapsed |