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US 10,538,063 B2Granted
Multilayer interlayer and glass laminate
AssigneeKuraray America, Inc.
InventorsStephen Bennison, Charles Anthony Smith, Steven M. Hansen, Toshiyuki Iguchi, Rebecca L. Smith, Takeshi Kusudou, Takuya Kobayashi
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Abstract
A multilayer interlayer containing a specified ionomer skin layer and an acoustic damping intermediate layer, and laminate containing such interlayer are provided, wherein the laminate has a desirable combination of sound insulating, flexural strength and optical properties suitable for use in transportation and architectural end uses.
Claims43
A multilayer interlayer comprising:
- (1) a first skin layer A which is a layer of a first thermoplastic resin optionally containing one or more additives,
- (2) a second skin layer C which is a layer of a second thermoplastic resin optionally containing one or more additives, and
- (3) an acoustic damping layer B between the first skin layer A and the second skin layer C,
- wherein (I) the first thermoplastic resin and the second thermoplastic resin are the same or different, (II) at least one of the first thermoplastic resin and the second thermoplastic is a first ionomer resin, and (III) the acoustic damping layer B is a layer of a thermoplastic elastomer resin optionally containing one or more additives, and
- wherein the first ionomer resin is an at least partially neutralized ethylene acid copolymer comprising copolymerized units of:
- (a) ethylene,
- (b) from about 10 to about 30 wt % of at least one α,β-unsaturated carboxylic acid having 3 to 10 carbon atoms, and
- (c) from about 2 wt % to about 15 wt % of at least one derivative of an α,β-unsaturated carboxylic acid having 3 to 10 carbon atoms,
- wherein (i) the weight percentages of the copolymerized units are based on the total weight of the ethylene acid copolymer and the sum of the weight percentages of the copolymerized units is 100 wt %, (ii) the at least one derivative of an α,β-unsaturated carboxylic acid having 3 to 10 carbon atoms comprises an α,β-unsaturated carboxylic acid ester, and (iii) at least a portion of carboxylic acid groups of the α,β-unsaturated carboxylic acid are neutralized to form an ionomer comprising carboxylate groups having counterions.
6 more elements
A laminate comprising a first exterior sheet and a second exterior sheet having interposed therebetween a multilayer interlayer, wherein that the multilayer interlayer comprises:
- (1) a first skin layer A which is a layer of a first thermoplastic resin optionally containing one or more additives,
- (2) a second skin layer C which is a layer of a second thermoplastic resin optionally containing one or more additives, and
- (3) an acoustic damping layer B between the first skin layer A and the second skin layer C,
- wherein (1) the first thermoplastic resin and the second thermoplastic resin are the same or different, (II) at least one of the first thermoplastic resin and the second thermoplastic is a first ionomer resin, and (III) the acoustic damping layer B is a layer of a thermoplastic elastomer resin optionally containing one or more additives, and
- wherein the first ionomer resin is an at least partially neutralized ethylene acid copolymer comprising copolymerized units of:
- (a) ethylene,
- (b) from about 10 to about 30 wt % of at least one α,β-unsaturated carboxylic acid having 3 to 10 carbon atoms, and
- (c) from about 2 wt % to about 15 wt % of at least one derivative of an α,β-unsaturated carboxylic acid having 3 to 10 carbon atoms,
- wherein (i) the weight percentages of the copolymerized units are based on the total weight of the ethylene acid copolymer and the sum of the weight percentages of the copolymerized units is 100 wt %, (ii) the at least one derivative of an α,β-unsaturated carboxylic acid having 3 to 10 carbon atoms comprises an α,β-unsaturated carboxylic acid ester, and (iii) at least a portion of carboxylic acid groups of the α,β-unsaturated carboxylic acid are neutralized to form an ionomer comprising carboxylate groups having counterions.
6 more elements
Dependencies are inferred from the claim text.