US4483952A
Expired / Lapsed
US
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Polyolefin resin composition comprising a dibenzylidene sorbitol derivative
Assignee: Ec Chemical Ind Co Ltd
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Filing: 1983-04-22
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Granted: 1984-11-20
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Expires: 2003-04-22
Abstract
Abstract A polyolefin resin composition consisting essentially of at least one homopolymer or copolymer of an aliphatic monoolefin and 0.05 to 2% by weight, based on the weight of the composition, of a dibenzylidene sorbitol derivative of the following formula <IMAGE> wherein R and R' are different from each other and each represents a member selected from the class consisting of a hydrogen atom, a chlorine atom, alkyl groups having 1 to 3 carbon atoms and alkoxy groups having a C1-C3 alkyl moiety.
Inventors
- 👤 Hiroshi Uchiyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:23
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/02; C08K; C08K5/00; C08K5/04; C08K5/15; C08K5/156; C08K5/1575
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
82 words
A polyolefin resin composition consisting essentially of at least one homopolymer or copolymer of an aliphatic monoolefin and 0.05 to 2% by weight, based on the weight of the composition, of a dibenzylidene sorbitol derivative of the following formula ##STR6## wherein R and R' are different from each other and each represents a member selected from the class consisting of a hydrogen atom, alkyl groups having 1 to 3 carbon atoms and alkoxy groups having a C 1 -C 3 alkyl moiety.
Claim 2
Dependent Claim
82 words
A polyolefin resin composition consisting essentially of at least one homopolymer or copolymer of an aliphatic monoolefin and 0.05 to 2% by weight, based on the weight of the composition, of a dibenzylidene sorbitol derivative of the following formula ##STR6## wherein R and R' are different from each other and each represents a member selected from the class consisting of a hydrogen atom, alkyl groups having 1 to 3 carbon atoms and alkoxy groups having a C 1 -C 3 alkyl moiety.
Claim 3
Dependent Claim
20 words
The composition of claim 1 wherein the aliphatic monoolefin is selected from the group consisting of ethylene, propylene and methylpentene.
Claim 4
Dependent Claim
13 words
The composition of claim 1 wherein the dibenzylidene sorbitol derivative is 1,3-p-methylbenzylidene-2,4-p-ethylbenzylidene sorbitol.
Claim 5
Dependent Claim
13 words
The composition of claim 1 wherein the dibenzylidene sorbitol derivative is 1,3-p-ethylbenzylidene-2,4-p-methylbenzylidene sorbitol.
Claim 6
Dependent Claim
13 words
The composition of claim 1 wherein the dibenzylidene sorbitol derivative is 1,3-benzylidene-2,4-p-methylbenzylidene sorbitol.
Claim 7
Dependent Claim
12 words
The composition of claim 1 wherein the dibenzylidene sorbitol is 1,3-p-methylbenzylidene-2,4-benzylidene sorbitol.
Claim 8
Dependent Claim
13 words
The composition of claim 1 wherein the dibenzylidene sorbitol derivative is 1,3-benzylidene-2,4-p-ethylbenzylidene sorbitol.
Claim 9
Dependent Claim
13 words
The composition of claim 1 wherein the dibenzylidene sorbitol derivative is 1,3-p-ethyl-2,4-benzylidene sorbitol.
Claim 10
Dependent Claim
73 words
A polyolefin resin composition consisting essentially of at least one homopolymer or copolymer of an aliphatic monoolefin and 0.05 to 2% by weight, based on the weight of the composition, of a dibenzylidene sorbitol derivative of the following formula: ##STR7## wherein R and R' are different from each other and each represents a member selected from the class consisting of a hydrogen atom and an alkyl group having 1 to 3 carbon atoms.
Claim 11
Dependent Claim
73 words
A polyolefin resin composition consisting essentially of at least one homopolymer or copolymer of an aliphatic monoolefin and 0.05 to 2% by weight, based on the weight of the composition, of a dibenzylidene sorbitol derivative of the following formula: ##STR7## wherein R and R' are different from each other and each represents a member selected from the class consisting of a hydrogen atom and an alkyl group having 1 to 3 carbon atoms.
Claim 12
Dependent Claim
36 words
A polyolefin resin composition consisting essentially of at least one homopolymer or copolymer of an aliphatic monoolefin and 0.05 to 2% by weight, based on the weight of the composition, of 1,3-p-chloro-benzylidene-2,4-p-methylbenzylidene sorbitol or 1,3-p-methylbenzylidene-2,4-p-chlorobenzylidene sorbitol.
Claim 13
Dependent Claim
36 words
A polyolefin resin composition consisting essentially of at least one homopolymer or copolymer of an aliphatic monoolefin and 0.05 to 2% by weight, based on the weight of the composition, of 1,3-p-chloro-benzylidene-2,4-p-methylbenzylidene sorbitol or 1,3-p-methylbenzylidene-2,4-p-chlorobenzylidene sorbitol.
Claim 14
Dependent Claim
14 words
The composition according to claim 10 wherein the dibenzylidene sorbitol derivative is 1,3-p-methylbenzylidene-2,4-p-chlorobenzylidene sorbitol.
Claim 15
Dependent Claim
13 words
The composition of claim 10 wherein the dibenzylidene sorbitol derivative is 1,3-p-chlorobenzylidene-2,4-p-methylbenzylidene sorbitol.
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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) | 1987-11-20 | 1988-05-21 | 1988-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-11-20 | 1992-05-21 | 1992-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-11-20 | 1996-05-21 | 1996-11-20 | $7700.00 | Window Closed / Lapsed |