CA1202136A
Expired / Lapsed
CA
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Plasticizer-containing foils formed of the partially acetalised polyvinyl alcohol
Assignee: Dynamit Nobel AG
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Filing: 1982-07-16
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Granted: 1986-03-18
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Expires: 2002-07-16
Abstract
Abstract ABSTRACT OF THE DISCLOSURE: The present invention is concerned with foils made of partially acetalised polyvinyl alcohol, especially foils formed of polyvinyl butyral. These foils contain, as platicizers, esters of aroma-tic carboxylic acids whose ester components can possess up to 10 C-atoms, alone, or as mix-tures, or mixtures formed of these esters with esters formed of aliphatic carboxylic acids and glycols, chiefly di-, tri-or tetraethyleneglycol. These esters may be worked into the partially acetalised polyvinyl alcohol foils in higher pro-portions than the hitherto known plasticizers, without being exuded or influencing disadvantageously other important properties of the foils. They have the additional advantage that the laminated panes produceable therefrom possess a lower capacity for water uptake than hitherto known laminated glasses.
Inventors
- 👤 Rolf Beckmann
- 👤 Hans-Werner Schaaf
- 👤 Paul Spielau
Bibliographic Details
Application Number
—
Jurisdiction
CA
Data Source
google_patents
Last Synchronized
2026-11-07 17:39
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/10; C08K5/12; B; B32; B32B; B32B17/00; B32B17/06; B32B17/10; B32B17/10005; B32B17/1055; B32B17/10605; B32B17/10761; C08K5/101; C08K5/103; C09; C09J; C09J7/00; C09J7/10; B32B2605/00; B32B2605/006
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
79 words
A plasticizer-containing foil of partially acetalised polyvinyl alcohol, characterised in that said foil contains as plasticizer a mixture consisting essen-tially of a) at least one ester of an organic, cyclic acid and an alcohol, said alcohol having 4 to 10 carbon atoms and b) at least one ester of a glycol and an aliphatic mono-basic acid, the monobasic acid having 4 to 10 carbon atoms, the ratio of a) to b) in said mixture being from 85:15 to 15:85.
Claim 2
Dependent Claim
79 words
A plasticizer-containing foil of partially acetalised polyvinyl alcohol, characterised in that said foil contains as plasticizer a mixture consisting essen-tially of a) at least one ester of an organic, cyclic acid and an alcohol, said alcohol having 4 to 10 carbon atoms and b) at least one ester of a glycol and an aliphatic mono-basic acid, the monobasic acid having 4 to 10 carbon atoms, the ratio of a) to b) in said mixture being from 85:15 to 15:85.
Claim 3
Dependent Claim
39 words
A plasticizer-containing foil according to claim 1, characterised in that it contains as an ester of an organic cyclic acid, an ester of phthalic acid and as an ester of a glycol, an ester of di-, tri- or tetraethylene-glycol.
Claim 4
Dependent Claim
30 words
A plasticizer-containing foil according to claim 1, characterised in that the partially acetalised polyvinyl alcohol possesses a hydroxyl group content of 5 to 30% by weight calculated as polyvinyl alcohol.
Claim 5
Dependent Claim
30 words
A plasticizer-containing foil according to claim 1, characterised in that the partially acetalised polyvinyl alcohol possesses a hydroxyl group content of 16 to 23% by weight calculated as polyvinyl alcohol.
Claim 6
Dependent Claim
22 words
A plasticizer-containing foil according to claim 1, characterised in that it possesses a Shore hardness A at 23°C between 100 and 20.
Claim 7
Dependent Claim
22 words
A plasticizer-containing foil according to claim 1, characterised in that it possesses a Shore hard-ness A at 23°C between 90 and 30.
Claim 8
Dependent Claim
28 words
A plasticizer-containing sheet according to claim 1, wherein the ester of an organic cyclic acid is n-heptyl phthalate and the ester of a glycol is triethylene glycol diheptanoate.
Claim 9
Dependent Claim
30 words
A plasticizer-containing sheet according to claim 1, wherein the ester of an organic cyclic acid is hexyl decyl phthalate and the ester of a glycol is triethylene glycol di-2-ethyl butyrate.
Claim 10
Dependent Claim
103 words
A plasticizer-containing foil of partially acetalised polyvinyl alcohol, said foil containing plasti-cizer in an amount of 10 to 40% by weight based on the total weight of the foil characterised in that said foil contains as plasticizer a mixture consisting essentially of a) at least one ester of an organic, cyclic acid and an aliphatic alcohol, said aliphatic alcohol having 4 to 10 carbon atoms and b) at least one ester of a glycol and an aliphatic mono-basic acid, said monobasic acid having 4 to 10 carbon atoms, the weight ratio of a) to b) in said mixture being from 85:15 to 15:85.
Claim 11
Dependent Claim
103 words
A plasticizer-containing foil of partially acetalised polyvinyl alcohol, said foil containing plasti-cizer in an amount of 10 to 40% by weight based on the total weight of the foil characterised in that said foil contains as plasticizer a mixture consisting essentially of a) at least one ester of an organic, cyclic acid and an aliphatic alcohol, said aliphatic alcohol having 4 to 10 carbon atoms and b) at least one ester of a glycol and an aliphatic mono-basic acid, said monobasic acid having 4 to 10 carbon atoms, the weight ratio of a) to b) in said mixture being from 85:15 to 15:85.
Claim 12
Dependent Claim
39 words
A plasticizer-containing foil according to claim 9, characterised in that it contains as an ester of an organic cyclic acid, an ester of phthalic acid and as an ester of a glycol, an ester of di-, tri- or tetraethylene-glycol.
Claim 13
Dependent Claim
30 words
A plasticizer-containing foil according to claim 9, characterise in that it contains the plastizer in amounts of 20 to 35% by weight based on the total weight of the foil.
Claim 14
Dependent Claim
30 words
A plasticizer-containing foil according to claim 9, characterised in that the partially acetalised polyvinyl alcohol possesses a hydroxyl group content of 5 to 30% by weight calculated as polyvinyl alcohol.
Claim 15
Dependent Claim
30 words
A plasticizer-containing foil according to claim 9, characterised in that the partially acetalised polyvinyl alcohol possesses a hydroxyl group content of 16 to 23% by weight calculated as polyvinyl alcohol.
Claim 16
Dependent Claim
23 words
A plasticizer-containing foil according to claim 9 f characterised in that it possesses a Shore hardness A at 23°C between 100 and 20.
Claim 17
Dependent Claim
22 words
A plasticizer-containing foil according to claim 9, characterised in that it possesses a Shore Hard-ness A at 23°C between 90 and 30.
Claim 18
Dependent Claim
31 words
A plasticizer-containing foil according to claim 9, 11 or 12, wherein the ester of an organic cyclic acid is n-heptyl phthalate and the ester of a glycol is triethylene glycol diheptanoate.
Claim 19
Dependent Claim
33 words
A plasticizer-containing sheet according to claim 9, 11 or 12, wherein the ester of an organic cyclic acid is hexyl decyl phthalate and the ester of a glycol is triethylene glycol di-2-ethyl butyrate.
References Cited (Backward Citations)
No citation records indexed.
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