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US 7,410,695 B2Granted
Siloxane based amide modified nylons
AssigneeDow Corning Corporation
InventorsRichard Rabe, William Blackwood, Kimmai Nguyen, Kevin Ryan
Life of this patent
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Abstract
Nylon compositions prepared by the melt mixing of a nylon thermoplastic resin and the siloxane based amide are disclosed. The modified nylons are useful in applications requiring nylons with increased hydrophobicity.
Claims12
A thermoplastic resin composition comprising at least 80% of a reaction product resulting from the melt mixing of;
- A) a nylon thermoplastic resin, and
- B) a siloxane modified amide having the formula;
- where,
- (1) DP (degree of polymerization) is 1-700,
- (2) n is 1-500,
- (3) X is a linear or branched chain alkylene having 1-30 carbons,
- (4) Y is a linear or branched chain alkylene having 1-40 carbons,
- wherein,
- (a) the alkylene group may optionally and additionally contain in the alkylene portion at least one of (i) 1-3 amide linkages;
- (ii) a C5 or C6 cycloalkane;
- or (iii) phenylene, optionally substituted by 1-3 members which are independently C1-C3 alkyls;
- (b) the alkylene group itself may optionally be substituted by at least one of (i) hydroxy;
- (ii) a C3-C8 cycloalkane;
- (iii) 1-3 members which are independently C1-C3 alkyls;
- phenyl, optionally substituted by 1-3 members which are independently C1-C3 alkyls;
- (iv) a C1-C3 alkyl hydroxy;
- or (v) a C1-C6 alkyl amine;
- (c) Y can be Z where Z is T(R20)(R21)(R22) where R20, R21 and R22 are each independently linear or branched C1-C10 alkylenes;
- and T is CR in which R is hydrogen, the group defined for R1-R4, or a trivalent atom such as N, P and Al;
- (5) each of R1-R4 is independently methyl, ethyl, propyl, isopropyl, a siloxane chain, or phenyl, wherein the phenyl may optionally be substituted by 1-3 members, which are methyl or ethyl;
- and
- (6) X, Y, DP, and R1-R4 may be the same or different for each polyamide unit.
19 more elements
A process for preparing a thermoplastic resin composition comprising melt mixing;
- A) a nylon thermoplastic resin, and
- B) a siloxane modified amide having the formula;
- where,
- (1) DP (degree of polymerization) is 1-700,
- (2) n is 1-500,
- (3) X is a linear or branched chain alkylene having 1-30 carbons,
- (4) Y is a linear or branched chain alkylene having 1-40 carbons,
- wherein,
- (a) the alkylene group may optionally and additionally contain in the alkylene portion at least one of (i) 1-3 amide linkages;
- (ii) a C5 or C6 cycloalkane;
- or (iii) phenylene, optionally substituted by 1-3 members which are independently C1-C3 alkyls;
- (b) the alkylene group itself may optionally be substituted by at least one of (i) hydroxy;
- (ii) a C3-C8 cycloalkane;
- (iii) 1-3 members which are independently C1-C3 alkyls;
- phenyl, optionally substituted by 1-3 members which are independently C1-C3 alkyls;
- (iv) a C1-C3 alkyl hydroxy;
- or (v) a C1-C6 alkyl amine;
- (c) Y can be Z where Z is T(R20)(R21)(R22) where R20, R21 and R22 are each independently linear or branched C1-C10 alkylenes;
- and T is CR in which R is hydrogen, the group defined for R1-R4, or a trivalent atom such as N, P and Al;
- (5) each of R1-R4 is independently methyl, ethyl, propyl, isopropyl, a siloxane chain, or phenyl, wherein the phenyl may optionally be substituted by 1-3 members, which are methyl or ethyl;
- and
- (6) X, Y, DP, and R1-R4 may be the same or different for each polyamide unit,
- wherein the thermoplastic resin composition contains at least 80 weight percent of A) and B).
20 more elements
Dependencies are inferred from the claim text.