US4301255A
Expired / Lapsed
US
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Novel alloy compositions and products
Assignee: Johnson and Johnson
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Filing: 1980-05-05
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Granted: 1981-11-17
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Expires: 2000-05-05
Abstract
Abstract New polymer alloy compositions of a thermoplastic-elastomeric block copolymer and copolyester, and films prepared therefrom are described. The films have superior properties, including resistance to attack by organic solvents.
Inventors
- 👤 Ralf Korpman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:51
CPC Classifications
C; C08; C08L; C08L53/00; C08L53/02; C09; C09J; C09J153/00; C09J153/02; C08L2666/00; C08L2666/02; C08L2666/14
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
147 words
A film and sheet forming alloy composition comprising (a) from about 5 to about 95 parts by weight of a thermoplastic-elastomeric block copolymer component, wherein the block copolymer is an A--B--A or A--B block copolymer or a mixture thereof in which A represents an alkenylarene polymer block and b represents a polymer block of a conjugated lower aliphatic diene and (b) correspondingly from about 95 to 5 parts by weight of a copolyester component, wherein the copolyester is a polymeric ester of at least two different ester units, each ester unit being a condensation product of a dicarboxylic acid and an aliphatic diol, said ester units being represented by the formulas ##STR2## wherein X and X' are nuclei of dicarboxylic acids and Y and Y' are nuclei of aliphatic diols, and wherein each ester unit is characterized by having a thermal softening temperature below about 225° C.
Claim 2
Dependent Claim
147 words
A film and sheet forming alloy composition comprising (a) from about 5 to about 95 parts by weight of a thermoplastic-elastomeric block copolymer component, wherein the block copolymer is an A--B--A or A--B block copolymer or a mixture thereof in which A represents an alkenylarene polymer block and b represents a polymer block of a conjugated lower aliphatic diene and (b) correspondingly from about 95 to 5 parts by weight of a copolyester component, wherein the copolyester is a polymeric ester of at least two different ester units, each ester unit being a condensation product of a dicarboxylic acid and an aliphatic diol, said ester units being represented by the formulas ##STR2## wherein X and X' are nuclei of dicarboxylic acids and Y and Y' are nuclei of aliphatic diols, and wherein each ester unit is characterized by having a thermal softening temperature below about 225° C.
Claim 3
Dependent Claim
132 words
An improved elastomeric film forming composition comprising at least an equal proportion by weight of a block copolymer component and a copolyester component, wherein the block copolymer is an A--B--A or A--B block copolymer or a mixture thereof in which A represents an alkenylarene polymer block and B represents a polymer block of a conjugated lower aliphatic diene, and wherein the copolyester is a polymeric ester of at least two different ester units, each unit being a condensation product of a dicarboxylic acid and an aliphatic diol, said ester units being represented by the formulas ##STR3## wherein X and X' are nuclei of dicarboxylic acids and Y and Y' are nuclei of aliphatic diols, and wherein each ester unit and is characterized by having a thermal softening temperature below about 225° C.
Claim 4
Dependent Claim
132 words
An improved elastomeric film forming composition comprising at least an equal proportion by weight of a block copolymer component and a copolyester component, wherein the block copolymer is an A--B--A or A--B block copolymer or a mixture thereof in which A represents an alkenylarene polymer block and B represents a polymer block of a conjugated lower aliphatic diene, and wherein the copolyester is a polymeric ester of at least two different ester units, each unit being a condensation product of a dicarboxylic acid and an aliphatic diol, said ester units being represented by the formulas ##STR3## wherein X and X' are nuclei of dicarboxylic acids and Y and Y' are nuclei of aliphatic diols, and wherein each ester unit and is characterized by having a thermal softening temperature below about 225° C.
Claim 5
Dependent Claim
39 words
A composition according to claim 2 wherein the proportion of the block copolymer component is from about 50 to 85 parts by weight and that of the copolyester component is correspondingly from about 50 to 15 parts by weight.
Claim 6
Dependent Claim
39 words
A composition according to claim 3 wherein the proportion of the block polymer component is from about 55 to 75 parts by weight and that of the copolyester component is correspondingly from about 45 to 25 parts by weight.
Claim 7
Dependent Claim
136 words
An improved plastic film forming composition comprising a major proportion by weight of a copolyester component and a minor proportion of an elastomeric block copolymer component, wherein the copolyester is a polymeric ester of at least two different ester units, each unit being a condensation product of a dicarboxylic acid and an aliphatic diol, said ester units being represented by the formulas ##STR4## wherein X and X' are nuclei of dicarboxylic acids and Y and Y' are nuclei of aliphatic diols, and wherein each ester unit and is characterized by having a thermal softening temperature below about 225° C., and the block copolymer consists essentially of an A--B--A or A--B block copolymer or a mixture thereof in which A represents an alkenylarene polymer block and B represents a polymer block of a conjugated lower aliphatic diene.
Claim 8
Dependent Claim
136 words
An improved plastic film forming composition comprising a major proportion by weight of a copolyester component and a minor proportion of an elastomeric block copolymer component, wherein the copolyester is a polymeric ester of at least two different ester units, each unit being a condensation product of a dicarboxylic acid and an aliphatic diol, said ester units being represented by the formulas ##STR4## wherein X and X' are nuclei of dicarboxylic acids and Y and Y' are nuclei of aliphatic diols, and wherein each ester unit and is characterized by having a thermal softening temperature below about 225° C., and the block copolymer consists essentially of an A--B--A or A--B block copolymer or a mixture thereof in which A represents an alkenylarene polymer block and B represents a polymer block of a conjugated lower aliphatic diene.
Claim 9
Dependent Claim
35 words
A plastic film forming composition according to claim 5 wherein the copolyester component is from 55 to 95 parts by weight and the block copolymer component is correspondingly from 45 to 5 parts by weight.
Claim 10
Dependent Claim
35 words
A plastic film forming composition according to claim 6 wherein the copolyester component is from 65 to 90 parts by weight and the block copolymer component is correspondingly from 10 to 35 parts by weight.
Claim 11
Dependent Claim
24 words
A composition according to claim 2 in which the A--B--A block copolymer is a styrene-isoprene-styrene block copolymer and the copolyester is poly(ethylene terephthalate-co-ethylene azelate).
Claim 12
Dependent Claim
24 words
A composition according to claim 2 in which the A--B--A block copolymer is a styrene-isoprene-styrene block copolymer and the copolyester is poly(butylene terephthalate-co-butylene isophthalate).
Claim 13
Dependent Claim
24 words
A composition according to claim 5 in which the A--B--A block copolymer is a styrene-isoprene-styrene block copolymer and the copolyester is poly(ethylene terephthalate-co-ethylene azelate).
Claim 14
Dependent Claim
23 words
A composition according to claim 5 in which the block copolymer is a styrene-isoprene-styrene block copolymer and the copolyester is poly(butylene terephthalate-co-butylene isophthalate).
Claim 15
Dependent Claim
136 words
An elastomeric film or sheet prepared from a composition comprising at least an equal proportion by weight of a block copolymer component and a copolyester component, wherein the block copolymer is an A--B--A or A--B block copolymer or a mixture thereof in which A represents an alkenylarene polymer block and B represents a polymer block of a conjugated lower aliphatic diene, and wherein the copolyester is a polymeric ester of at least two different ester units, each ester unit being a condensation product of a dicarboxylic acid and an aliphatic diol, said ester units being represented by the formulas ##STR5## wherein X and X' are nuclei of dicarboxylic acids and Y and Y' are nuclei of aliphatic diols, and wherein each ester unit and is characterized by having a thermal softening temperature below about 225° C.
Claim 16
Dependent Claim
136 words
An elastomeric film or sheet prepared from a composition comprising at least an equal proportion by weight of a block copolymer component and a copolyester component, wherein the block copolymer is an A--B--A or A--B block copolymer or a mixture thereof in which A represents an alkenylarene polymer block and B represents a polymer block of a conjugated lower aliphatic diene, and wherein the copolyester is a polymeric ester of at least two different ester units, each ester unit being a condensation product of a dicarboxylic acid and an aliphatic diol, said ester units being represented by the formulas ##STR5## wherein X and X' are nuclei of dicarboxylic acids and Y and Y' are nuclei of aliphatic diols, and wherein each ester unit and is characterized by having a thermal softening temperature below about 225° C.
Claim 17
Dependent Claim
140 words
An improved plastic film or sheet prepared from a composition comprising a major proportion by weight of a copolyester component and a minor proportion of an elastomeric block copolymer component, wherein the copolyester is a polymeric ester of at least two different ester units, each unit being a condensation product of a dicarboxylic acid and an aliphatic diol said ester units being represented by the formulas ##STR6## wherein X and X' are nuclei of dicarboxylic acids and Y and Y' are nuclei of aliphatic diols, and wherein each ester unit and is characterized by having a thermal softening temperature below about 225° C., and the block copolymer consists essentially of an A--B--A or A--B block copolymer or a mixture thereof in which A represents an alkenylarene polymer block and B represents a polymer block of a conjugated lower aliphatic diene.
Claim 18
Dependent Claim
140 words
An improved plastic film or sheet prepared from a composition comprising a major proportion by weight of a copolyester component and a minor proportion of an elastomeric block copolymer component, wherein the copolyester is a polymeric ester of at least two different ester units, each unit being a condensation product of a dicarboxylic acid and an aliphatic diol said ester units being represented by the formulas ##STR6## wherein X and X' are nuclei of dicarboxylic acids and Y and Y' are nuclei of aliphatic diols, and wherein each ester unit and is characterized by having a thermal softening temperature below about 225° C., and the block copolymer consists essentially of an A--B--A or A--B block copolymer or a mixture thereof in which A represents an alkenylarene polymer block and B represents a polymer block of a conjugated lower aliphatic diene.
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) | 1984-11-16 | 1985-05-18 | 1985-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-11-16 | 1989-05-18 | 1989-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-11-16 | 1993-05-18 | 1993-11-17 | $7700.00 | Window Closed / Lapsed |