Patent US4243572A successfully refreshed from Google Patents.
US4243572A
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Alkyl alkylaryl adipate plasticizers for polyvinyl butyral
Assignee: EIDP Inc
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Filing: 1979-11-19
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Granted: 1981-01-06
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Expires: 1999-11-19
Abstract
Abstract A plasticizer for polyvinyl butyral wherein the plasticizer is an alkyl alkylaryl adipate and particularly a benzyl alkyl adipate. The plasticized polyvinyl butyral is specially useful in the manufacture of transparent sheets and particularly as an interlayer for laminated safety glass.
Inventors
- 👤 Daniel Dages
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:57
CPC Classifications
B; B32; B32B; B32B17/00; B32B17/06; B32B17/10; B32B17/10005; B32B17/1055; B32B17/10761; B32B17/10605; C; C08; C08K; C08K5/00; C08K5/04; C08K5/10; C08K5/11; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31627; Y10T428/3163
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
38 words
A method for plasticizing polyvinyl butyral which comprises admixing polyvinyl butyral and alkyl alkylaryl adipate of the formula: ##STR3## where n is an integer greater than 0 and p and r integers whose sum is greater than 0.
Claim 2
Independent Claim
38 words
A method for plasticizing polyvinyl butyral which comprises admixing polyvinyl butyral and alkyl alkylaryl adipate of the formula: ##STR3## where n is an integer greater than 0 and p and r integers whose sum is greater than 0.
Claim 3
Dependent Claim
18 words
The method according to claim 1 wherein p is equal to 1 and r is equal to 0.
Claim 4
Independent Claim
15 words
The method according to claims 1 or 2 wherein n is between 2 and 10.
Claim 5
Dependent Claim
31 words
The method according to claim 1 wherein the alkyl alkylaryl adipate is selected from the group consisting of benzyl octyl adipate, benzyl hexyl adipate, benzyl butyl adipate and benzyl decyl adipate.
Claim 6
Dependent Claim
15 words
The method according to claim 4 wherein the alkyl aryl adipate is benzyl octyl adipate.
Claim 7
Dependent Claim
44 words
The method according to claim 1 wherein the alkyl alkylaryl adipate to be admixed with the polyvinyl butyral is in an amount such that the plasticized polyvinyl butyral contains from about 15 to 65% by weight alkyl, alkylaryl adipate based on the total weight.
Claim 8
Dependent Claim
51 words
The method according to claim 1 wherein the polyvinyl butyral has a molecular mass of between about 30,000 and 600,000, and the molecular chain contains from about 12 to 25% by weight hydroxyl groups calculated as polyvinyl alcohol and below about 10% by weight residual ester groups calculated as polyvinyl ester.
Claim 9
Dependent Claim
20 words
The method according to claim 1 wherein the admixture is conducted generally and for a period of about 30 minutes.
Claim 10
Dependent Claim
35 words
A polyvinyl butyral resin plasticized with an alkyl aryl adipate plasticizer of the formula: ##STR4## where n is an integer greater than 0 and p and r are integers whose sum is greater than 0.
Claim 11
Dependent Claim
35 words
A polyvinyl butyral resin plasticized with an alkyl aryl adipate plasticizer of the formula: ##STR4## where n is an integer greater than 0 and p and r are integers whose sum is greater than 0.
Claim 12
Dependent Claim
26 words
The polyvinyl butyral resin according to claim 9 wherein p is equal to 1, r is equal to 0 and n is between 2 and 10.
Claim 13
Dependent Claim
39 words
The polyvinyl butyral resin according to claims 9 or 10 wherein the alkyl alkylaryl adipate plasticizer is present in an amount of from about 15 to 65% by weight of the total weight of the plasticized polyvinyl butyral resin.
Claim 14
Dependent Claim
41 words
An interlayer for laminated safety glass comprising a polyvinyl butyral plasticized with an alkyl alkylaryl adipate plasticizer of the formula: ##STR5## where n is an integer greater than 0 and p and r are integers whose sum is greater than 0.
Claim 15
Dependent Claim
41 words
An interlayer for laminated safety glass comprising a polyvinyl butyral plasticized with an alkyl alkylaryl adipate plasticizer of the formula: ##STR5## where n is an integer greater than 0 and p and r are integers whose sum is greater than 0.
Claim 16
Dependent Claim
18 words
The interlayer according to claim 12 wherein p is equal to 1 and r is equal to 0.
Claim 17
Dependent Claim
15 words
The interlayer according to claims 12 or 13 wherein n is between 2 and 10.
Claim 18
Dependent Claim
34 words
A plasticizer for polyvinyl butyral comprising an alkyl alkylaryl adipate of the formula: ##STR6## where n is an integer greater than 0 and p and r are integers whose sum is greater than 0.
Claim 19
Dependent Claim
34 words
A plasticizer for polyvinyl butyral comprising an alkyl alkylaryl adipate of the formula: ##STR6## where n is an integer greater than 0 and p and r are integers whose sum is greater than 0.
Claim 20
Dependent Claim
51 words
The plasticizer according to claim 15 wherein the polyvinyl butyral has a molecular mass of between about 30,000 and 600,000, and the molecular chain contains from about 12 to 25% by weight hydroxyl groups calculated as polyvinyl alcohol and below about 10% by weight residual ester groups calculated as polyvinyl ester.
Claim 21
Dependent Claim
18 words
The plasticizer according to claim 15 wherein p is equal to 1 and r is equal to 0.
Claim 22
Dependent Claim
15 words
The plasticizer according to claims 15 or 17 wherein n is between 2 and 10.
Claim 23
Dependent Claim
31 words
The plasticizer according to claim 15 wherein the alkyl alkylaryl adipate is selected from the group consisting of benzyl octyl adipate, benzyl hexyl adipate, benzyl butyl adipate and benzyl decyl adipate.
Claim 24
Dependent Claim
15 words
The plasticizer according to claim 19 wherein the alkyl alkylarly adipate is benzyl octyl adipate.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-01-06 | 1984-07-07 | 1985-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-01-06 | 1988-07-07 | 1989-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-01-06 | 1992-07-07 | 1993-01-06 | $7700.00 | Window Closed / Lapsed |