Patent US4656242A successfully refreshed from Google Patents.
US4656242A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Poly(ester-amide) compositions
Assignee: Henkel Corp
•
Filing: 1985-06-07
•
Granted: 1987-04-07
•
Expires: 2005-06-07
Abstract
Abstract A certain class of poly(ester-amide) polymers are disclosed which are particularly suitable as hot melt adhesive compositions particularly advantageous for bonding plastics, such as polyester or polycarbonate polymers. The particular class of poly(ester-amides) are those which include a polymeric fat acid, and more specifically a dimeric fat acid component, in which the ester segments will contribute from about 20, preferably 35 to about 60 weight percent of the poly(ester-amide) and the amide segment contributing the remainder.
Inventors
- 👤 Dale G. Swan
- 👤 Jerry C. Hansen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:44
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/44
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
101 words
A poly(ester-amide) composition which comprises the product of polymerization of (a) from about 10 to 80 equivalent percent of a polymeric fatty acid and (b) from about 20 to 90 equivalent percent of a dicarboxylic acid, with a substantially equivalent amount of (c) from about 40 to 90 equivalent percent of an organic diamine and (d) from about 10 to 60 equivalent percent of a diol wherein the amount of the reactants are selected and adjusted so as to provide a polymer containing from about 20 to 60 percent by weight of ester segments, the remainder of said segments being amide.
Claim 2
Dependent Claim
101 words
A poly(ester-amide) composition which comprises the product of polymerization of (a) from about 10 to 80 equivalent percent of a polymeric fatty acid and (b) from about 20 to 90 equivalent percent of a dicarboxylic acid, with a substantially equivalent amount of (c) from about 40 to 90 equivalent percent of an organic diamine and (d) from about 10 to 60 equivalent percent of a diol wherein the amount of the reactants are selected and adjusted so as to provide a polymer containing from about 20 to 60 percent by weight of ester segments, the remainder of said segments being amide.
Claim 3
Dependent Claim
49 words
A composition as defined in claim 1 wherein said dicarboxylic acid has the formula ROOC--COOR or ROOCR.sub.1 COOR where R is selected from the group consisting of hydrogen and alkyl groups having 1-8 combination and R 1 is a divalent aliphatic or cycloaliphatic hydrocarbon radical having 1-20 carbon atoms.
Claim 4
Dependent Claim
24 words
A composition as defined in claim 1 wherein said dicarboxylic acid is a straight chain aliphatic diacid and has at least six carbon atoms.
Claim 5
Dependent Claim
15 words
A composition as defined in claim 3 wherein said diacid has from 6-12 carbon atoms.
Claim 6
Dependent Claim
22 words
A composition as defined in claim 4 wherein said diacid is selected from the group consisting of adipic, azelaic and sebacic acids.
Claim 7
Dependent Claim
33 words
A composition as defined in claim 1 wherein the organic diamine has the formula H.sub.2 NR.sub. 2 NH.sub.2 where R 2 is an aliphatic or cycloaliphatic hydrocarbon radical containing from 2-20 carbon atoms.
Claim 8
Dependent Claim
14 words
A composition as defined in claim 6 wherein said organic diamine is hexamethylene diamine.
Claim 9
Dependent Claim
30 words
A composition as defined in claim 1 wherein said diol has the formula HO--R.sub.1 --OH where R 1 is an aliphatic or cycloaliphatic hydrocarbon radical having from 1-20 carbon atoms.
Claim 10
Dependent Claim
13 words
A composition as defined in claim 8 wherein said diol is ethylene glycol.
Claim 11
Dependent Claim
14 words
A composition as defined in claim 8 wherein said diol is 1,6 hexamethylene diol.
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) | 1990-04-06 | 1990-10-06 | 1991-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-04-06 | 1994-10-06 | 1995-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-04-06 | 1998-10-06 | 1999-04-07 | $7700.00 | Window Closed / Lapsed |