US4390594A
Expired / Lapsed
US
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Plasticizers for polyvinyl butyral
Assignee: EIDP Inc
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Filing: 1981-12-01
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Granted: 1983-06-28
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Expires: 2001-12-01
Abstract
Abstract This invention relates to a novel group of plasticizers for polyvinyl butyral wherein the plasticizer comprises a mixture of at least one triethylene glycol diester of a monocarboxylic acid having a carbon chain comprising 7 or 8 carbon atoms and at least one dialkyl adipate in which the alkyl group contains from 3 to 8 carbon atoms or at least one alkyl alkylaryl adipate.
Inventors
- 👤 Daniel Dages
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:30
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/10; C08K5/101; C08K5/103; B; B32; B32B; B32B17/00; B32B17/06; B32B17/10; B32B17/10005; B32B17/1055; B32B17/10605; B32B17/10761; C08K5/11; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31627; Y10T428/3163; Y10T428/31942
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
140 words
A plasticizer for polyvinyl butyral having a molecular weight between about 30,000 and 600,000, a 0 to 10% content by weight of residual ester groups, calculated as polyvinyl acetate and a 12 to 25% content by weight of hydroxyl groups, calculated as polyvinyl alcohol wherein the plasticizer comprises a mixture of: (a) between about 10 and 90% of at least one triethylene glycol diester of a monocarboxylic acid wherein the carbon chain comprises 7 or 8 carbon atoms; and (b) between about 90 and 10% of at least one adipate which is: (i) an alkyl alkylaryl adipate having the general formula: ##STR4## wherein n is greater than or equal to 1 and the sum of p+r is greater than or equal to 1; or (ii) a dialkyl adipate in which the alkyl group contains from 3 to 8 carbon atoms.
Claim 2
Dependent Claim
140 words
A plasticizer for polyvinyl butyral having a molecular weight between about 30,000 and 600,000, a 0 to 10% content by weight of residual ester groups, calculated as polyvinyl acetate and a 12 to 25% content by weight of hydroxyl groups, calculated as polyvinyl alcohol wherein the plasticizer comprises a mixture of: (a) between about 10 and 90% of at least one triethylene glycol diester of a monocarboxylic acid wherein the carbon chain comprises 7 or 8 carbon atoms; and (b) between about 90 and 10% of at least one adipate which is: (i) an alkyl alkylaryl adipate having the general formula: ##STR4## wherein n is greater than or equal to 1 and the sum of p+r is greater than or equal to 1; or (ii) a dialkyl adipate in which the alkyl group contains from 3 to 8 carbon atoms.
Claim 3
Dependent Claim
20 words
The plasticizer according to claim 1 wherein the diester is triethylene glycol di-n-heptanoate, triethylene glycol di-2-ethylhexanoate, or triethylene glycol di-n-octanoate.
Claim 4
Dependent Claim
25 words
The plasticizer according to claim 2 wherein the alkyl alkylaryl adipate is benzyl octyl adipate, benzyl hexyl adipate, benzyl butyl adipate or benzyl decyl adipate.
Claim 5
Dependent Claim
17 words
The plasticizer according to claim 1 comprising a mixture of triethylene glycol di-n-heptanoate with benzyl octyl adipate.
Claim 6
Dependent Claim
17 words
The plasticizer according to claim 1 comprising a mixture of triethylene glycol di-2-ethylhexanoate with benzyl octyl adipate.
Claim 7
Dependent Claim
17 words
The plasticizer according to claim 1 comprising a mixture of triethylene glycol di-n-octanoate with benzyl octyl adipate.
Claim 8
Dependent Claim
143 words
A composition of matter comprising a polyvinyl butyral resin having a molecular weight between about 30,000 and 600,000, a 0 to 10% content by weight of residual ester groups, calculated as polyvinyl acetate and a 12 to 25% content by weight of hydroxyl groups, calculated as polyvinyl alcohol, plasticized with a plasticizer mixture of: (a) between about 10 and 90% of at least one triethylene glycol diester of a monocarboxylic acid wherein the carbon chain comprises 7 or 8 carbon atoms; and (b) between about 90 and 10% of at least one adipate which is: (i) an alkyl alkylaryl adipate having the general formula: ##STR5## wherein n is greater than or equal to 1 and the sum of p+r is greater than or equal to 1; or (ii) a dialkyl adipate in which the alkyl group contains from 3 to 8 carbon atoms.
Claim 9
Dependent Claim
143 words
A composition of matter comprising a polyvinyl butyral resin having a molecular weight between about 30,000 and 600,000, a 0 to 10% content by weight of residual ester groups, calculated as polyvinyl acetate and a 12 to 25% content by weight of hydroxyl groups, calculated as polyvinyl alcohol, plasticized with a plasticizer mixture of: (a) between about 10 and 90% of at least one triethylene glycol diester of a monocarboxylic acid wherein the carbon chain comprises 7 or 8 carbon atoms; and (b) between about 90 and 10% of at least one adipate which is: (i) an alkyl alkylaryl adipate having the general formula: ##STR5## wherein n is greater than or equal to 1 and the sum of p+r is greater than or equal to 1; or (ii) a dialkyl adipate in which the alkyl group contains from 3 to 8 carbon atoms.
Claim 10
Dependent Claim
23 words
The composition of matter according to claim 7 wherein the plasticizer content of the polyvinyl butyral-plasticizer mixture is between about 10 and 65%.
Claim 11
Dependent Claim
19 words
An interlayer for laminated safety glass comprising the composition of matter according to one of claims 7 or 8.
Claim 12
Dependent Claim
153 words
A laminated safety glass comprising two sheets of glass having between the glass surfaces an interlayer of polyvinyl butyral having a molecular weight between about 30,000 and 600,000, a 0 to 10% content by weight of residual ester groups, calculated as polyvinyl acetate and a 12 to 25% content by weight of hydroxyl groups, calculated as polyvinyl alcohol, plasticized with a plasticizer mixture of: (a) between about 10 and 90% of at least one triethylene glycol diester of a monocarboxylic acid wherein the carbon chain comprises 7 or 8 carbon atoms; and (b) between about 90 and 10% of at least one adipate which is: (i) an alkyl alkylaryl adipate having the general formula; ##STR6## wherein n is greater than or equal to 1 and the sum of p+r is greater than or equal to 1; or (ii) a dialkyl adipate in which the alkyl group contains from 3 to 8 carbon atoms.
Claim 13
Dependent Claim
153 words
A laminated safety glass comprising two sheets of glass having between the glass surfaces an interlayer of polyvinyl butyral having a molecular weight between about 30,000 and 600,000, a 0 to 10% content by weight of residual ester groups, calculated as polyvinyl acetate and a 12 to 25% content by weight of hydroxyl groups, calculated as polyvinyl alcohol, plasticized with a plasticizer mixture of: (a) between about 10 and 90% of at least one triethylene glycol diester of a monocarboxylic acid wherein the carbon chain comprises 7 or 8 carbon atoms; and (b) between about 90 and 10% of at least one adipate which is: (i) an alkyl alkylaryl adipate having the general formula; ##STR6## wherein n is greater than or equal to 1 and the sum of p+r is greater than or equal to 1; or (ii) a dialkyl adipate in which the alkyl group contains from 3 to 8 carbon atoms.
Claim 14
Dependent Claim
22 words
The laminated safety glass according to claim 10, wherein the diester is triethylene glycol di-n-heptanoate, triethylene glycol di-2-ethylhexanoate or triethylene glycol di-n-octanoate.
Claim 15
Dependent Claim
27 words
The laminated safety glass according to claim 11, wherein the alkyl alkylaryl adipate is benzyl octyl adipate, benzyl hexyl adipate, benzyl butyl adipate, or benzyl decyl adipate.
Claim 16
Dependent Claim
19 words
The laminated safety glass according to claim 10, comprising a mixture of triethylene glycol di-n-heptanoate with benzyl octyl adipate.
Claim 17
Dependent Claim
19 words
The laminated safety glass according to claim 10, comprising a mixture of triethylene glycol di-2-ethylhexanoate with benzyl octyl adipate.
Claim 18
Dependent Claim
19 words
The laminated safety glass according to claim 10, comprising a mixture of triethylene glycol di-n-octanoate with benzyl octyl adipate.
Claim 19
Dependent Claim
22 words
The composition of matter according to claim 7 wherein the diester is triethylene glycol di-n-heptanoate, triethylene glycol di-2-ethylhexanoate, or triethylene glycol di-n-octanoate.
Claim 20
Dependent Claim
27 words
The composition of matter according to claim 16 wherein the alkyl alkylaryl adipate is benzyl octyl adipate, benzyl hexyl adipate, benzyl butyl adipate or benzyl decyl adipate.
Claim 21
Independent Claim
145 words
A method for plasticizing polyvinyl butyral having a molecular weight between about 30,000 and 600,000, a 0 to 10% content by weight of residual ester groups, calculated as polyvinyl acetate and a 12 to 25% content by weight of hydroxyl groups, calculated as polyvinyl alcohol, which comprises admixing the polyvinyl butyral with a plasticizer mixture of: (a) between about 10 and 90% of at least one triethylene glycol diester of a monocarboxylic acid wherein the carbon chain comprises 7 or 8 carbon atoms; and (b) between about 90 and 10% of at least one adipate which is: (i) an alkyl alkylaryl adipate having the general formula: ##STR7## wherein n is greater than or equal to 1 and the sum of p+r is greater than or equal to 1; or (ii) a dialkyl adipate in which the alkyl group contains from 3 to 8 carbon atoms.
Claim 22
Independent Claim
145 words
A method for plasticizing polyvinyl butyral having a molecular weight between about 30,000 and 600,000, a 0 to 10% content by weight of residual ester groups, calculated as polyvinyl acetate and a 12 to 25% content by weight of hydroxyl groups, calculated as polyvinyl alcohol, which comprises admixing the polyvinyl butyral with a plasticizer mixture of: (a) between about 10 and 90% of at least one triethylene glycol diester of a monocarboxylic acid wherein the carbon chain comprises 7 or 8 carbon atoms; and (b) between about 90 and 10% of at least one adipate which is: (i) an alkyl alkylaryl adipate having the general formula: ##STR7## wherein n is greater than or equal to 1 and the sum of p+r is greater than or equal to 1; or (ii) a dialkyl adipate in which the alkyl group contains from 3 to 8 carbon atoms.
Claim 23
Dependent Claim
20 words
The method according to claim 18 wherein the diester is triethylene glycol di-n-heptanoate, triethylene glycol di-2-ethylhexanoate, or triethylene glycol di-n-octanoate.
Claim 24
Dependent Claim
25 words
The method according to claim 19 wherein the alkyl alkylaryl adipate is benzyl octyl adipate, benzyl hexyl adipate, benzyl butyl adipate or benzyl decyl adipate.
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) | 1986-06-27 | 1986-12-27 | 1987-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-06-27 | 1990-12-27 | 1991-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-06-27 | 1994-12-27 | 1995-06-28 | $7700.00 | Window Closed / Lapsed |