US4833195A
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High flow drapable polymer compositions
Assignee: BP Performance Polymers Inc
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Filing: 1987-07-20
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Granted: 1989-05-23
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Expires: 2007-07-20
Abstract
Abstract A thermoplastic pelletizable polymer composition comprising an oligomer or degraded polyolefin and an olefinic elastomer. Optionally, the composition can also include a polyolefin thermoplastic polymer. The composition, when converted to a film or fabric meets the criteria or drapability, low hardness on the Shore A scale, high melt flow and reprocessability.
Inventors
- 👤 Ashok M. Adur
- 👤 Joseph M. Hogue, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:59
CPC Classifications
C; C08; C08L; C08L21/00; C08L23/00; C08L23/02; Y; Y10; Y10S; Y10S525/00; Y10S525/938
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
120 words
A thermoplastic pelletizable polymer composition having a Shore A hardness below about 95, and a melt flow rate of about 30 grams/10 minutes to 1100 grams/10 minutes at 230° C. and 2.16 kilograms, consisting essentially of: (a) An oligomer or degraded polyolefin having a number average molecular weight less than about 15,000 and a melt flow rate greater than about 300 grams/10 minutes at 230° C. and 2.16 kilograms; and (b) a polyolefin elastomer, having an elastic modulus of less than about 6000 psi at room temperature when measured in the uncrosslinked state, and wherein the ratio of (a):(b) varies from about 90:10 to 20:80, respectively said composition which, when converted to a film or fabric is reprocessable and drapable.
Claim 2
Dependent Claim
120 words
A thermoplastic pelletizable polymer composition having a Shore A hardness below about 95, and a melt flow rate of about 30 grams/10 minutes to 1100 grams/10 minutes at 230° C. and 2.16 kilograms, consisting essentially of: (a) An oligomer or degraded polyolefin having a number average molecular weight less than about 15,000 and a melt flow rate greater than about 300 grams/10 minutes at 230° C. and 2.16 kilograms; and (b) a polyolefin elastomer, having an elastic modulus of less than about 6000 psi at room temperature when measured in the uncrosslinked state, and wherein the ratio of (a):(b) varies from about 90:10 to 20:80, respectively said composition which, when converted to a film or fabric is reprocessable and drapable.
Claim 3
Dependent Claim
34 words
The composition of claim 1, wherein the melt flow rate for the composition varies from about 50 grams/10 minutes to 800 grams/10 minutes, and the ratio of (a):(b) varies from about 30:70 to 70:30.
Claim 4
Dependent Claim
25 words
The composition of claim 1, wherein the oligomer is a degraded polyolefin prepared in situ by using a blend of polyolefin with a suitable degradant.
Claim 5
Dependent Claim
18 words
Tne composition of claim 1, also including up to about 30 weight % of a polyolefin thermoplastic polymer.
Claim 6
Dependent Claim
29 words
The composition of claim wherein (a) is formed from a monomer selected from the group consisting of hexene-1, pentene-1, isopentene, ethylene, propylene, butene-1, isobutene, 4-methylpentene-1, butadiene, and mixtures thereof.
Claim 7
Dependent Claim
21 words
The composition of claim 1, wherein (b) is selected from the group consisting of ethylene-propylene copolymers, ethylene-propylene-diene terpolymers, and isobutylene polymers.
Claim 8
Dependent Claim
28 words
The composition of claim 4, wherein the polyolefin thermoplastic polymer is selected from the group consisting of ethylene polymers, polypropylene homopolymers and copolymers, poly(butene-1), poly(4-methylpentene-1) and mixtures thereof.
Claim 9
Dependent Claim
39 words
The composition of claim 4, wherein the polyolefin thermoplastic polymer is grafted with a monomer containing a functional group selected from the group consisting of carboxylic acid, carboxylic acid derivatives, acid chlorides, amides, imides, amines, isocyanates and mixtures thereof.
Claim 10
Dependent Claim
22 words
The composition of claim 1, also including a flame retardant additive of about 5 to 40% by weight of the total composition.
Claim 11
Dependent Claim
9 words
The composition of claim 1, characterized by being reprocessible.
Claim 12
Dependent Claim
23 words
The composition of claim 1, having a melt flow rate greater than about 50 grams/10 minutes at 2.1° C. and kilograms (Cond. L.).
Claim 13
Dependent Claim
109 words
A drapable film or fabric made from a composition having a Shore A hardness below about 95, and a melt flow rate of about 30 grams/10 minutes to 1100 grams/10 minutes at 230° C. and 2.16 kilograms, consisting essentially of: (i) an oligomer or degraded polyolefin having a number average molecular weight less than about 15,000 and a melt flow rate greater than about 300 grams/10 minutes at 230° C. and 2.16 kilograms; and (ii) a polyolefin elastomer having an elastic modulus of less than about 6000 psi at room temperature in the uncrosslinked state, and wherein the ratio of (a)? (b) varies from about 90:10 to 20:80, respectively.
Claim 14
Dependent Claim
109 words
A drapable film or fabric made from a composition having a Shore A hardness below about 95, and a melt flow rate of about 30 grams/10 minutes to 1100 grams/10 minutes at 230° C. and 2.16 kilograms, consisting essentially of: (i) an oligomer or degraded polyolefin having a number average molecular weight less than about 15,000 and a melt flow rate greater than about 300 grams/10 minutes at 230° C. and 2.16 kilograms; and (ii) a polyolefin elastomer having an elastic modulus of less than about 6000 psi at room temperature in the uncrosslinked state, and wherein the ratio of (a)? (b) varies from about 90:10 to 20:80, respectively.
Claim 15
Dependent Claim
27 words
The film or fabric of claim 12, wherein the oligomer is a degraded polyolefin prepared in situ by using a blend of polyolefin with a suitable degradant.
Claim 16
Dependent Claim
24 words
The film or fabric of claim 12, wherein the composition has a melt flow rate of about 50 to 400 grams/10 minutes and pelletized
Claim 17
Dependent Claim
20 words
The film or fabric of claim 12, also including up to about 30 weight % of a polyolefin thermoplastic polymer.
Claim 18
Dependent Claim
33 words
The film or fabric of claim 12, wherein the oligomer is fomred from a monomer selected from the group consisting of hexene-1, pentene-1, isopentene, ethylene, propylene, butene-1, isobutene, 4-methylpentene-1, butadiene, and mixtures thereof.
Claim 19
Dependent Claim
25 words
The film or fabric of claim 12, wherein the olefin elastomer is selected from the group consisting of ethylene-propylene copolymers, ethylene-propylene-diene terpolymers, and isobutylene polymers.
Claim 20
Dependent Claim
30 words
The film or fabric of claim 15, wherein the polyolefin thermoplastic polymer is selected from the group consisting of ethylene polymers, polypropylene homopolymers and copolymers, poly(butene-1), poly(4-methylpentene-1) and mixtures thereof.
Claim 21
Dependent Claim
41 words
The film or fabric of claim 18, wherein the polyolefin thermaplastic polymer is grafted with a monomer containing a functional group selected from the group consisting of carboxylic acid, carboxylic acid derivatives, acid chlorides, amides, imides, amines, isocyanates and mixtures thereof.
Claim 22
Dependent Claim
27 words
The film or fabric of claim 12, wherein the blend also includes a flame retardant additive of about 5 to '% by weight of the total composition.
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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) | 1992-05-22 | 1992-11-21 | 1993-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-22 | 1996-11-21 | 1997-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-22 | 2000-11-21 | 2001-05-23 | $7700.00 | Window Closed / Lapsed |