Patent US4325997A successfully refreshed from Google Patents.
US4325997A
Expired / Lapsed
US
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Processable cellulose ester compositions
Assignee: Eastman Chemical Co
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Filing: 1980-09-29
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Granted: 1982-04-20
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Expires: 2000-09-29
Abstract
Abstract This invention is directed to processable cellulose esters having excellent adhesion to metal substrates and weatherability. These commercially useful cellulose ester compositions can be molded, extruded over metal foils, shaped and otherwise processed in a thermoplastic condition at elevated temperatures to provide products having improved ultraviolet light stability or weatherability and good color stability.
Inventors
- 👤 Richard J. Brewer
- 👤 Richard T. Bogan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:15
CPC Classifications
B; B32; B32B; B32B23/00; B32B23/04; B32B15/00; B32B15/20; B32B23/042; B32B37/00; B32B37/14; B32B37/15; B32B37/153; B32B2451/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31703
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
61 words
A processable halogenated phosphoric ester free cellulose ester plastic composition comprising (1) at least one cellulose ester plastic of the group consisting of cellulose acetate, cellulose propionate, cellulose butyrate, cellulose acetate propionate, cellulose acetate butyrate and (2) about 5 to 15 parts by weight of an acid accepting liquid epoxy compound per 100 parts by weight of said cellulose ester plastic.
Claim 2
Dependent Claim
61 words
A processable halogenated phosphoric ester free cellulose ester plastic composition comprising (1) at least one cellulose ester plastic of the group consisting of cellulose acetate, cellulose propionate, cellulose butyrate, cellulose acetate propionate, cellulose acetate butyrate and (2) about 5 to 15 parts by weight of an acid accepting liquid epoxy compound per 100 parts by weight of said cellulose ester plastic.
Claim 3
Dependent Claim
82 words
A processable cellulose ester plastic composition according to claim 1 wherein said acid accepting liquid epoxy compound is a member of the group consisting of compounds having the formula ##STR3## where n=0 to 12; ##STR4## wherein R 1 is an alkylene having 1 to 12 carbon atoms, or arylene which can be substituted with alkyl or hydroxy; x and y is 1 to 10; R 2 is methyl, ethyl, propyl, butyl, hexyl or octyl; (D) epoxidized tallate; and (E) epoxidized soybean oil.
Claim 4
Dependent Claim
18 words
A processable cellulose ester composition according to claim 2 wherein said cellulose ester plastic is cellulose acetate butyrate.
Claim 5
Dependent Claim
18 words
A processable cellulose ester composition according to claim 3 wherein said epoxy compound is epoxidized soya bean oil.
Claim 6
Dependent Claim
61 words
A processable halogenated phosphoric ester free cellulose ester plastic composition comprising (1) at least one cellulose ester plastic of the group consisting of cellulose acetate, cellulose propionate, cellulose butyrate, cellulose acetate propionate, cellulose acetate butyrate and (2) about 5 to 10 parts by weight of an acid accepting liquid epoxy compound per 100 parts by weight of said cellulose ester plastic.
Claim 7
Dependent Claim
61 words
A processable halogenated phosphoric ester free cellulose ester plastic composition comprising (1) at least one cellulose ester plastic of the group consisting of cellulose acetate, cellulose propionate, cellulose butyrate, cellulose acetate propionate, cellulose acetate butyrate and (2) about 5 to 10 parts by weight of an acid accepting liquid epoxy compound per 100 parts by weight of said cellulose ester plastic.
Claim 8
Dependent Claim
81 words
A processable cellulose ester plastic composition according to claim 5 wherein said acid accepting epoxy compound is a member of the group consisting of compounds having the formula ##STR5## where n=0 to 12; ##STR6## wherein R 1 is an alkylene having 1 to 12 carbon atoms, or arylene which can be substituted with alkyl or hydroxy; x and y is 1 to 10; R 2 is methyl, ethyl, propyl, butyl, hexyl or octyl; (D) epoxidized tallate; and (E) epoxidized soybean oil.
Claim 9
Dependent Claim
18 words
A processable cellulose ester composition according to claim 6 wherein said cellulose ester plastic is cellulose acetate butyrate.
Claim 10
Dependent Claim
18 words
A processable cellulose ester composition according to claim 7 wherein said epoxy compound is epoxidized soya bean oil.
Claim 11
Dependent Claim
13 words
Decorative trim prepared by extruding the composition of claim 1 onto metal foil.
Claim 12
Dependent Claim
13 words
Decorative trim according to claim 9 wherein said metal foil is aluminum foil.
Claim 13
Dependent Claim
13 words
Decorative trim prepared by extruding the composition of claim 4 onto metal foil.
Claim 14
Dependent Claim
13 words
Decorative trim according to claim 11 wherein said metal foil is aluminum foil.
Claim 15
Dependent Claim
13 words
Decorative trim prepared by extruding the composition of claim 5 onto metal foil.
Claim 16
Dependent Claim
13 words
Decorative trim according to claim 13 wherein said metal foil is aluminum foil.
Claim 17
Dependent Claim
13 words
Decorative trim prepared by extruding the composition of claim 8 onto metal foil.
Claim 18
Dependent Claim
13 words
Decorative trim according to claim 15 wherein said metal foil is aluminum foil.
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) | 1985-04-19 | 1985-10-19 | 1986-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-04-19 | 1989-10-19 | 1990-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-04-19 | 1993-10-19 | 1994-04-20 | $7700.00 | Window Closed / Lapsed |