Patent US4257927A successfully refreshed from Google Patents.
US4257927A
Expired / Lapsed
US
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Inorganic organic coester stabilizers
Assignee: Adeka Corp
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Filing: 1978-10-05
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Granted: 1981-03-24
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Expires: 1998-10-05
Abstract
Abstract New polyhydric phenol coesters are disclosed of polyhydric phenols, having 2 to 3 phenolic hydroxyl groups and 1 to 3 benzenoid rings, with carbonic acid and an inorganic acid which can be phosphorous acid, phosphoric acid, and boric acid. The new coesters have molecular weights from 700 to about 10,000, preferably from 1200 to 7000, and are highly effective stabilizers for a variety of synthetic resins. Stabilizer compositions comprising a polyhydric phenol coester and a known polymer stabilizer, as well as synthetic resins stabilized with such stabilizer compositions, are also disclosed.
Inventors
- 👤 William E. Leistner
- 👤 Motonobu Minagawa
- 👤 Yutaka Nakahara
- 👤 Tohru Haruna
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:58
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/49; C08K5/51
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
89 words
As a new composition of matter, a coester terminating in a free hydroxyl group and having a molecular weight between 700 and about 10,000, of at least one polyhydric phenol having 3 phenolic hydroxyl groups and 3 benzenoid rings substituted with zero to three alkyl, cycloalkyl, or aralkyl groups having 1 to 10 carbon atoms, with carbonic acid and an inorganic acid selected from the group consisting of phosphorous acid and phosphoric acid, in which the molar proportions of carbonic acid to inorganic acid range from 19:1 to 1:19.
Claim 2
Dependent Claim
89 words
As a new composition of matter, a coester terminating in a free hydroxyl group and having a molecular weight between 700 and about 10,000, of at least one polyhydric phenol having 3 phenolic hydroxyl groups and 3 benzenoid rings substituted with zero to three alkyl, cycloalkyl, or aralkyl groups having 1 to 10 carbon atoms, with carbonic acid and an inorganic acid selected from the group consisting of phosphorous acid and phosphoric acid, in which the molar proportions of carbonic acid to inorganic acid range from 19:1 to 1:19.
Claim 3
Dependent Claim
15 words
A coester according to claim 1 having a molecular weight between 1200 and about 7000.
Claim 4
Dependent Claim
14 words
A coester according to claim 1 in which the inorganic acid is phosphorous acid.
Claim 5
Dependent Claim
14 words
A coester according to claim 1 in which the inorganic acid is phosphoric acid.
Claim 6
Dependent Claim
12 words
A coester according to claim 4 which is a carbonate-acid phosphite coester.
Claim 7
Dependent Claim
12 words
A coester according to claim 4 which is a carbonate-phenol phosphate coester.
Claim 8
Dependent Claim
15 words
A coester according to claim 1 in which the polyhydric phenol is 1, 1,3-tris (2'-methyl-4'-hydroxy-5'-t-butylphenyl)butane.
Claim 9
Dependent Claim
151 words
A stabilizer composition capable of increasing the resistance to deterioration on heating of a synthetic resin, comprising a coester terminating in a free hydroxyl group and having a molecular weight between 700 and about 10,000, of at least one polyhydric phenol having 2 to 3 phenolic hydroxyl groups and 1 to 3 benzenoid rings, substituted with zero to three alkyl, cycloalkyl or aralkyl groups having 1 to 10 carbon atoms, with carbonic acid and an inorganic acid selected from the group consisting of phosphorous acid and phosphoric acid, in which the molar proportions of carbonic acid to inorganic acid range from 19:1 to 1:19, and at least one synthetic resin stabilizer selected from the group consisting of thiodipropionate esters, organic phosphites, polyhydric alcohols, polyhydric alcohol 3-alkylthio propionates, ultraviolet absorbers, heavy metal deactivators, and barium, calcium, magnesium, nickel, strontium, tin, and zinc salts of monocarboxylic acids having 6 to 24 carbon atoms.
Claim 10
Dependent Claim
151 words
A stabilizer composition capable of increasing the resistance to deterioration on heating of a synthetic resin, comprising a coester terminating in a free hydroxyl group and having a molecular weight between 700 and about 10,000, of at least one polyhydric phenol having 2 to 3 phenolic hydroxyl groups and 1 to 3 benzenoid rings, substituted with zero to three alkyl, cycloalkyl or aralkyl groups having 1 to 10 carbon atoms, with carbonic acid and an inorganic acid selected from the group consisting of phosphorous acid and phosphoric acid, in which the molar proportions of carbonic acid to inorganic acid range from 19:1 to 1:19, and at least one synthetic resin stabilizer selected from the group consisting of thiodipropionate esters, organic phosphites, polyhydric alcohols, polyhydric alcohol 3-alkylthio propionates, ultraviolet absorbers, heavy metal deactivators, and barium, calcium, magnesium, nickel, strontium, tin, and zinc salts of monocarboxylic acids having 6 to 24 carbon atoms.
Claim 11
Dependent Claim
17 words
A stabilizer composition according to claim 8 in which the synthetic resin stabilizer is a thiodipropionate ester.
Claim 12
Dependent Claim
18 words
A stabilizer composition according to claim 8, in which the inorganic acid of the coester is phosphorous acid.
Claim 13
Dependent Claim
18 words
A stabilizer composition according to claim 8, in which the polyhydric phenol of the coester is an alkylidenebisphenol.
Claim 14
Dependent Claim
13 words
A stabilizer composition according to claim 11 in which the alkylidenebisphenol is 4,4'-n-butylidenebis(2-t-butyl-5-methylphenol).
Claim 15
Dependent Claim
34 words
A stabilizer composition according to claim 8, in which the synthetic resin stabilizer is a barium, calcium, magnesium, nickel, strontium, tin, or zinc salt of a monocarboxylic acid having 6 to 24 carbon atoms.
Claim 16
Dependent Claim
16 words
A stabilizer composition according to claim 13, in which the synthetic resin stabilizer is calcium stearate.
Claim 17
Dependent Claim
126 words
A stabilized synthetic resin composition comprising a synthetic resin selected from the group consisting of olefin polymers, vinyl chloride polymers, acrylonitrile copolymers, and polyamides comprising a synthetic resin and 0.05 to 5 percent by weight of the resin of a coester terminating in a free hydroxyl group and having a molecular weight between 700 and about 10,000, of at least one polyhydric phenol having 2 to 3 phenolic hydroxyl groups and 1 to 3 benzenoid rings, substituted with zero to three alkyl, cycloalkyl, or aralkyl groups having 1 to 10 carbon atoms, with carbonic acid and an inorganic acid selected from the group consisting of phosphorous acid and phosphoric acid, in which the molar proportions of carbonic acid to inorganic acid range from 19:1 to 1:19.
Claim 18
Dependent Claim
126 words
A stabilized synthetic resin composition comprising a synthetic resin selected from the group consisting of olefin polymers, vinyl chloride polymers, acrylonitrile copolymers, and polyamides comprising a synthetic resin and 0.05 to 5 percent by weight of the resin of a coester terminating in a free hydroxyl group and having a molecular weight between 700 and about 10,000, of at least one polyhydric phenol having 2 to 3 phenolic hydroxyl groups and 1 to 3 benzenoid rings, substituted with zero to three alkyl, cycloalkyl, or aralkyl groups having 1 to 10 carbon atoms, with carbonic acid and an inorganic acid selected from the group consisting of phosphorous acid and phosphoric acid, in which the molar proportions of carbonic acid to inorganic acid range from 19:1 to 1:19.
Claim 19
Dependent Claim
18 words
A stabilized synthetic resin composition according to claim 15 in which the synthetic resin is an olefin polymer.
Claim 20
Dependent Claim
19 words
A stabilized synthetic resin composition according to claim 15 in which the synthetic resin is a vinyl chloride polymer.
Claim 21
Dependent Claim
20 words
A stabilized synthetic resin composition according to claim 15 in which the inorganic acid of the coester is phosphorous acid.
Claim 22
Dependent Claim
20 words
A stabilized synthetic resin composition according to claim 18 in which the coester is a phenyl ester of phosphorus acid.
Claim 23
Dependent Claim
20 words
A stabilized synthetic resin composition according to claim 18 in which the coester is a 2-ethylhexyl ester of phosphorous acid.
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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) | 1984-03-23 | 1984-09-22 | 1985-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-23 | 1988-09-22 | 1989-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-23 | 1992-09-22 | 1993-03-24 | $7700.00 | Window Closed / Lapsed |