US4598125A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of impact-resistant nylon molding materials by alkaline lactam polymerization
Assignee: BASF SE
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Filing: 1983-12-30
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Granted: 1986-07-01
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Expires: 2003-12-30
Abstract
Abstract Impact-resistant nylon molding materials are prepared by activated alkaline lactam polymerization by a process in which the polymerization is carried out in the presence of a graft polymer in which A. from 5 to 95 parts by weight of a rubber-like polymer having a glass transition temperature below 0° C. form the grafting base for B. from 95 to 5 parts by weight of a polyadduct, polycondensate or acrylyl polymer having a glass transition temperature above 0° C., with or without C. from 0 to 90 parts by weight of a vinyl monomer.
Inventors
- 👤 Peter Horn
- 👤 Hellmut Bunsch
- 👤 Robert Gehm
- 👤 Matthias Marx
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:46
CPC Classifications
C; C08; C08L; C08L77/00; C08L77/02; C08G; C08G69/00; C08G69/02; C08G69/08; C08G69/14; C08G69/16; C08L67/00; C08L67/06
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
115 words
A process for the preparation of an impact-resistant nylon molding material by activated alkaline polymerization of lactams, wherein the polymerization is carried out in the presence of a graft polymer P, in which A. from 5 to 95 parts by weight of an elastomeric polymer having a glass transition temperature below 0° C. and a molecular weight of from 500 to 5,000 from the grafting base for B. from 95 to 5 parts by weight of a polyether containing an average from 0.2 to 2.0 olefinic double bonds per polymer molecule and which has a glass transition temperature above 0° C., with or without C. from 9 to 90 parts by weight of vinyl monomers.
Claim 2
Dependent Claim
115 words
A process for the preparation of an impact-resistant nylon molding material by activated alkaline polymerization of lactams, wherein the polymerization is carried out in the presence of a graft polymer P, in which A. from 5 to 95 parts by weight of an elastomeric polymer having a glass transition temperature below 0° C. and a molecular weight of from 500 to 5,000 from the grafting base for B. from 95 to 5 parts by weight of a polyether containing an average from 0.2 to 2.0 olefinic double bonds per polymer molecule and which has a glass transition temperature above 0° C., with or without C. from 9 to 90 parts by weight of vinyl monomers.
Claim 3
Dependent Claim
24 words
A process as claimed in claim 1, wherein the polymer A is a diene polymer having a molecular weight of from 500 to 500,000.
Claim 4
Dependent Claim
24 words
A process as claimed in claim 1, wherein the polymer A is a polybutadiene oil having a molecular weight of from 500 to 5,000.
Claim 5
Dependent Claim
18 words
A process as claimed in claim 1, wherein the polymer A carries reactive groups having acidic hydrogen atoms.
Claim 6
Dependent Claim
14 words
A process as claimed in claim 1, wherein the vinyl monomer C is styrene.
Claim 7
Dependent Claim
35 words
A process as claimed in claim 1, wherein a vinyl monomer C' carrying functional groups is added in an amount of less than 10% by weight, based on the sum of A, B and C.
Claim 8
Dependent Claim
56 words
A process as claimed in claim 1, wherein, in the alkaline lactam polymerization, a component (I), which contains a lactam and a catalyst, and a component (II), which contains a lactam and an activator, are mixed thoroughly at from 70° to 140° C., transported into a mold and polymerized therein at from 120° to 200° C.
Claim 9
Dependent Claim
19 words
A process as claimed in claim 7, wherein the polymerization is carried out by the reactive injection molding technique.
Claim 10
Dependent Claim
35 words
A process as claimed in claim 7, wherein a kryptophenol, an amine, or a mixture of CuI and KI in a molar ratio of 1:3, is added, as a stabilizer, to the activator-containing component (II).
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) | 1989-06-30 | 1989-12-30 | 1990-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-06-30 | 1993-12-30 | 1994-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-06-30 | 1997-12-30 | 1998-07-01 | $7700.00 | Window Closed / Lapsed |