US4064100A
Expired / Lapsed
US
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Friable distearyl pentaerythritol diphosphite
Assignee: WESTON CHEMICAL CO Inc
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Filing: 1976-06-18
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Granted: 1977-12-20
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Expires: 1996-06-18
Abstract
Abstract Free flowing distearyl pentaerythritol diphosphite is prepared. The product is non-toxic.
Inventors
- 👤 Ingenuin Hechenbleikner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:20
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/547; C07F9/6564; C07F9/6571; C07F9/6574; C07F9/65746
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
69 words
A composition comprising distearyl pentaerythritol diphosphite in friable form, said composition consisting essentially of the product prepared by either (1) reacting diphenyl pentaerythritol diphosphite with stearyl alcohol in a molar excess of 10 to 100 molar % or (2) reacting pentaerythritol, triphenyl phosphite and stearyl alcohol, the stearyl alcohol being employed in a molar excess of 10 to 100 molar % of that required to form distearyl pentaerythritol diphosphite.
Claim 2
Dependent Claim
69 words
A composition comprising distearyl pentaerythritol diphosphite in friable form, said composition consisting essentially of the product prepared by either (1) reacting diphenyl pentaerythritol diphosphite with stearyl alcohol in a molar excess of 10 to 100 molar % or (2) reacting pentaerythritol, triphenyl phosphite and stearyl alcohol, the stearyl alcohol being employed in a molar excess of 10 to 100 molar % of that required to form distearyl pentaerythritol diphosphite.
Claim 3
Dependent Claim
15 words
A composition according to claim 1 wherein the composition includes stearyl alcohol and tristearyl phosphite.
Claim 4
Dependent Claim
15 words
A composition according to claim 1 in the form of a finely-divided, friable, free-flowing powder.
Claim 5
Dependent Claim
10 words
A composition according to claim 1 made by process (1).
Claim 6
Dependent Claim
10 words
A composition according to claim 1 made by process (2).
Claim 7
Dependent Claim
37 words
A composition according to claim 1 wherein the pentaerythritol and triphenyl phosphite are first reacted together, the phenol formed is stripped off and then the stearyl alcohol is reacted with the product remaining after stripping the phenol.
Claim 8
Dependent Claim
28 words
A composition according to claim 6 wherein the materials are employed in the molar ratio of 1 mole pentaerythritol, 2 moles triphenyl phosphite and 2.2 moles stearyl alcohol.
Claim 9
Dependent Claim
62 words
A process of preparing a friable distearyl pentaerythritol diphosphite composition comprising either (1) reacting diphenyl pentaerythritol diphosphite with stearyl alcohol in a molar excess of at least 10 molar % or (2) reacting pentaerythritol, triphenyl phosphite and stearyl alcohol, the stearyl alcohol being employed in a molar excess of at least 10 molar % of that required to form distearyl pentaerythritol diphosphite.
Claim 10
Dependent Claim
62 words
A process of preparing a friable distearyl pentaerythritol diphosphite composition comprising either (1) reacting diphenyl pentaerythritol diphosphite with stearyl alcohol in a molar excess of at least 10 molar % or (2) reacting pentaerythritol, triphenyl phosphite and stearyl alcohol, the stearyl alcohol being employed in a molar excess of at least 10 molar % of that required to form distearyl pentaerythritol diphosphite.
Claim 11
Dependent Claim
14 words
A process according to claim 8 wherein the process consists essentially of said steps.
Claim 12
Dependent Claim
32 words
A process according to claim 8 wherein the molar excess of stearyl alcohol in process (1) is 10 to 100 molar % and in process (2) is 10 to 100 molar %.
Claim 13
Dependent Claim
10 words
A process according to claim 8 which is process (1).
Claim 14
Dependent Claim
10 words
A process according to claim 8 which is process (2).
Claim 15
Dependent Claim
37 words
A process according to claim 12 wherein the pentaerythritol and triphenyl phosphite are first reacted together, the phenol formed is stripped off and then the stearyl alcohol is reacted with the product remaining after stripping the phenol.
Claim 16
Dependent Claim
28 words
A process according to claim 13 wherein the materials are employed in the molar ratio of 1 mole pentaerythritol, 2 moles triphenyl phosphite and 2.2 moles stearyl alcohol.
Claim 17
Dependent Claim
31 words
A composition of matter comprising a polymer selected from the group consisting of halogen containing polymers and olefin polymers having incorporated therein the composition of claim 1 as a stabilizer therefore.
Claim 18
Dependent Claim
15 words
A composition of matter according to claim 15 wherein the polymer is an olefin polymer.
Claim 19
Dependent Claim
26 words
The stabilized composition of matter according to claim 16 stabilized against deterioration in the presence of ultraviolet light also including a stabilizing amount of 2-hydroxy-4-n-octoxy benzophenone.
Claim 20
Dependent Claim
27 words
The stabilized composition of matter according to claim 17 wherein the olefin polymer is chosen from the group consisting of homopolymers and copolymers of ethylene and propylene.
Claim 21
Dependent Claim
26 words
The stabilized composition of claim 18 containing 0.1 to 5% of 2-hydroxy-4-n-octoxy benzophenone and 0.05-1% of the said distearyl pentaerythritol diphosphite composition based on the polymer.
Claim 22
Dependent Claim
27 words
The stabilized composition of claim 19 containing 0.5 parts of 2-hydroxy-4-n-octoxy benzophenone and 0.5 parts of said distearyl pentaerythritol diphosphite composition per 100 parts of said polymer.
Claim 23
Dependent Claim
41 words
A method for stabilizing an olefin polymer against deterioration in the presence of ultraviolet light comprising the addition of a stabilizing amount of 2-hydroxy-4-n-octoxy benzophenone in combination with a stabilizing amount of the friable distearyl pentaerythritol diphosphite composition of claim 1.
Claim 24
Dependent Claim
35 words
The method of claim 21 wherein the 2-hydroxy-4-n-octoxy benzophenone is added in an amount of 0.1 to 5% and the distearyl pentaerythritol diphosphite composition is added in an amount of 0.05-1% based on the polymer.
Claim 25
Dependent Claim
29 words
The method of claim 22 wherein there is employed 0.5 parts of 2-hydroxy-4-n-octoxy benzophenone and 0.5 parts of said distearyl pentaerythritol diphosphite composition per 100 parts of said polymer.
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) | 1980-12-19 | 1981-06-20 | 1981-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-12-19 | 1985-06-20 | 1985-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-12-19 | 1989-06-20 | 1989-12-20 | $7700.00 | Window Closed / Lapsed |